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Papers added to this reading list since the initial collection. Some are new research; others are older work we missed.

Literature checked through October 18, 2026 · Sort all papers by publication date · Follow by RSS

Added October 18, 2026

114 papers · Newest research first within this update

First posted arXiv

Does Latent Chain-of-Thought Actually Reason? A Single, Unifying Taxonomy for Latent Reasoning

Jingjie Qiu, Sheldon Yu, Xunyi Jiang, Jiajin Liu, Zihan Huang, Zhendong Chu, Tong Yu, Julian McAuley, Junda Wu

Uses chain deletion, content replacement, probes, and trajectory analysis across 21 model-task configurations. Separates what continuous states encode from whether the model uses their content, finding that dependence on the chain varies with task and training recipe.

Analysis and evaluationContinuous-state reasoning
Paper ↗ Details & citations arXiv:2610.21182
First posted arXiv

Rationale Distribution Distillation via Flow Matching for Distributional Continuous Latent Reasoning

Mingyeong Kim, Gyusang Cho, Juho Lee, Giung Nam

Distills multiple written reasoning paths for each question into a flow model over fixed-length latent sequences, including mixtures of complete rationales. Generates all latent slots together, then uses a frozen language model to decode answers from sampled rationale contexts.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2610.19871
First posted arXiv

Learning to Compute Is Not Learning to Retain or Reuse in Looped Transformers

Peilong Zhou, Hongtao Zhang, Yulong Huang, Cangyuan Li, Mingyu Chen, Ying Wang

Separates computing an answer, preserving it through additional loops, and keeping its hidden state usable for later steps. On state-machine and maze tasks, shows that training can improve one ability without securing the others.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2610.19768
First posted arXiv

INTACT: Inducing Latent Reasoning on a Frozen Backbone

Kutay Tire, Atula Tejaswi, Haris Vikalo, Sujay Sanghavi

Trains a small encoder to turn a frozen model's hidden states into successive blocks of continuous thoughts. After this latent prefix, the frozen model writes its remaining reasoning and answer; the encoder learns through distillation and answer-correctness rewards.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2610.19568
First posted arXiv

ForkGRPO: Efficient Exploration and Fine-Grained Credit Assignment for Diffusion Language Models

Zhaoyan Jia, Chengwei Zhou, Gourav Datta, Massoud Pedram

Branches rollouts from uncertain intermediate states and reuses their shared textual prefixes. Local outcome comparisons assign credit to reasoning segments, testing whether more targeted exploration improves diffusion-model reasoning with fewer generated training tokens.

Alternative generation methods
Paper ↗ Details & citations arXiv:2610.19408
First posted arXiv

Input-Conditioned Search for Efficient Test-Time Scaling of Recursive Reasoners

Haochen Shi, Tianwen Fu, Qianggang Ding, Yinhan Lu, Yizhan Li, Huan Zhang, Yajie Zhao, Xingdi Yuan, Hengyang Lu, Bang Liu

Searches over input conditions to change a recursive reasoner's update rule without retraining it. Tests whether these alternative updates can redirect a trajectory away from an incorrect solution, rather than only adding more steps or perturbing its state.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.18547
First posted arXiv

Looped Reasoning Finishes Earlier Than You Think

Sumin Park, T. Konstantin Rusch

Studies how oscillations can slow convergence in recurrent reasoning models. Proposes an architecture whose rotational state changes are separated from the representation used for reasoning, and tests convergence on puzzle-solving tasks.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2610.18174
First posted arXiv

LoOPSD: On-Policy Self-Distillation with Looped Teachers

Wei Fan, Qingyue Yang, Chao-Hong Tan, Qian Chen, Wen Wang, Xiangang Li, Kejiang Chen, Weiming Zhang, Nenghai Yu

Searches for layers to repeat to make a stronger teacher from the current model, then distills its predictions into the original student. Repeats search and distillation as the student improves.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.18162
First posted arXiv

Monitoring latent reasoning in looped language models

Pawel Olszowiec, Paulina Tomaszewska, Maciej Żelaszczyk, Michal Byra, Neo Christopher Chung

Inspects eight looped language models for state convergence, token decisions, readout quality, attention behavior, and sensitivity to injected noise. Finds important differences between models that receive the prompt once and those that reintroduce it at each loop.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2610.18127
First posted arXiv

Large Decision Models: Repurposing Large Language Models as Single-Pass Decision Makers

Ziyi Chen, Yan Zhang, Jianhui Wei, Jianing Yin, Daoan Zhang

Trains a language model to score labels supplied at inference in one forward pass, without generating a reasoning trace. Distills label distributions from repeated teacher reasoning and studies routing uncertain decisions back to explicit reasoning.

Internalized reasoning
Paper ↗ Details & citations arXiv:2610.15501
First posted arXiv

Running Fewer Loops Removes Refusal Behaviour in Recurrent-Depth Language Models

Seyedarmin Azizi, Erfan Baghaei Potraghloo, Arya Fayyazi, Saeid Shokoufa, Massoud Pedram

Studies how reducing recurrent depth changes refusal behavior in two looped language-model families. Uses probes and interventions to distinguish recognizing a harmful request from refusing it, and tests safety training across randomly selected depths.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2610.15218
First posted arXiv

Knowledge transfer between simple discrete worlds

Silvère Gangloff, Jan Hula

Evaluates a depth-recurrent model on Sudoku-like worlds with different rule combinations. Compares symbolic rule descriptions with solved examples when the test world contains new puzzles, new combinations, or unfamiliar rule instances.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2610.15081
First posted arXiv

Learning to Extrapolate in Depth with Looped Transformers

Huitao Yang, Jianhao Huang, Zixuan Wang, Baharan Mirzasoleiman

Analyzes how many extra loops a model trained on graph connectivity can safely run. Derives a finite range where added depth solves harder graphs before further loops create false connections.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2610.14456
First posted arXiv

Adaptive-Depth Is a Finishing Stage

Andrei Piterbarg, Sean McLeish, Dhruv Pai, Benjamin Keigwin

Trains a looped language model at a fixed depth first, then introduces varying depths only near the end of training. Compares the resulting training cost and performance across inference depths with varying depth throughout training.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.14252
First posted arXiv

S-Space: Exploring Spatial Workspace in Multimodal Language Models

Zhiyuan Shi, Xiang Li, Xingzhuo Guo, Shangchen Miao, Weiliang Chen, Qiyu Dai, Jinshan Ren, Jiangran Lyu, Fangfu Liu, Mingsheng Long, Jialong Wu

Identifies spatial-coordinate directions in multimodal model activations and tests them through causal interventions. Separating perception from viewpoint transformation reveals cases where a model represents object locations but fails to perform the required spatial computation.

Analysis and evaluation
Paper ↗ Details & citations arXiv:2610.13527
First posted arXiv

Scaling to Tens of Thousands of Test-Time Iterations with Loop-Native Attention Residuals

Pengxiang Li, Dilxat Muhtar, Di He, Guinan Su, Lu Yin, Shiwei Liu

Adds a learned running summary of previous recurrent states so that each update can retain useful earlier work. Uses content-based weighting and temporal decay with constant aggregation memory, and tests whether puzzle-solving improves over much longer inference runs.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.11570
First posted arXiv

Think Before You Paint: Recursive Latent Reasoning for Diffusion Models

Paweł Skierś, Małgorzata Grzanka, Wojciech Masarczyk, Jan-Willem van de Meent, Kamil Deja

PaTh uses a small recursive network to refine learned image-state tokens inside each denoising step and steer a frozen diffusion model through adapters. It learns visual puzzles from reconstruction targets without symbolic solutions or an external verifier.

Recurrent reasoningContinuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2610.09876
First posted arXiv

Efficient Reasoning with Flow Language Models

Hanru Bai, Faissal Izermine, Oscar Davis, T. Konstantin Rusch

Compares continuous flow and discrete diffusion models at matched sizes and denoising steps. A theoretical account and intermediate-state interventions examine whether retaining information about several candidates helps solve mazes and Sudoku before final discretization.

Analysis and evaluationContinuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2610.09416
First posted arXiv

Continuous Memory Machines

Ciaran Regan, Kai Arulkumaran, Luke Darlow, Stefania Druga, Sebastian Risi, Llion Jones

Keeps separate short- and long-term matrix memories and lets a transformer update both through bidirectional reads and writes. Tests this recurrent architecture on algorithmic, in-context learning, and reasoning tasks.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.07907
First posted arXiv

SanSi: A Looped Typed Decision Model for System 1.5 Thinking

Shuyu Gan, Young-Jun Lee, Dongyeop Kang

Refines an internal state across loops to choose among typed answer options without generating a written reasoning trace. Supervises decisions at multiple depths and evaluates how prediction quality changes with the available computation budget.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.07730
First posted arXiv

Recurrent Looped Transformer

Yifan Zhang, Jichen Feng, Shihan Qin, Sun-Yuan Kung, Mengdi Wang

Passes each token's final decoder state to the next token, alongside a causal encoder representation. Tests whether this growing computation path supports state tracking on sequences longer than those seen during training.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.07591
First posted arXiv

CALR: Continuous Anchored Latent Reasoning via Render-of-Thought Compression

Zhaoyang Wei, Bowen Jiang, Yanchao Hao, Wenchao Ding, Zheng Wei, Shaocheng Wu, Zhenjun Han, Jianbin Jiao

Compresses images of written derivations into continuous states, training both the answers they support and the reasoning that can be recovered from them. Gradually shifts from generating latent blocks in parallel to generating them in sequence.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2610.07175
First posted arXiv

What Matters for Latent Reasoning with Flow Matching

Yassine Ouali, Adrian Bulat, Georgios Tzimiropoulos

Compresses symbolic reasoning into latent codes and trains a flow model to refine a block of noise into a thought before decoding the answer. Studies training choices, self-training on verified thoughts, and tests of whether the answer actually uses those thoughts.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2610.06666
First posted arXiv

Enhancing Long-Video VLM Embeddings with Query-Aware Streaming Latent Reasoning

Haozhe Chi, Song Jin, Yang Jin, Yadong Mu

Processes selected video clips sequentially while persistent think tokens accumulate evidence for a fixed-size retrieval embedding. Intermediate retrieval supervision and self-distillation train partial-video readouts; the output is an embedding rather than a generated reasoning trace.

Continuous-state reasoningRecurrent reasoning
Paper ↗ Details & citations arXiv:2610.04864
First posted arXiv

Pivot-SD: Efficient Self-Distillation for Masked Diffusion Language Models

Seo Hyun Kim, Sunwoo Hong, Younwoo Choi, Chen-Hao Chao, Se-Young Yun, Rahul G. Krishnan

Selects token commitments that most reduce uncertainty over the remaining output. Self-distillation reinforces these pivots from successful diffusion trajectories and discourages selected pivots from failed ones, rather than supervising every token equally.

Alternative generation methods
Paper ↗ Details & citations arXiv:2610.03665
First posted arXiv

On the Chain-of-Thought Monitorability of Looped Language Models

Han Wang, Ishwar B Balappanawar, Huan Zhang

Tests how recurrent depth affects the ability to monitor a language model through its written chain of thought. Finds task-dependent changes under stress tests, while matched comparisons do not show a general monitorability disadvantage for looped architectures.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2610.02741
First posted arXiv

Large Language Continuous Diffusion Models

Zhihan Yang, Wei Guo, Jean-Marie Lemercier, Simon Welker, Yonggan Fu, Mohammad Mahdi Kamani, Sajad Norouzi, Julius Berner, Tomas Geffner, Karsten Kreis, Yongxin Chen, Molei Tao, John Thickstun, Pavlo Molchanov, Ante Jukić, Arash Vahdat, Morteza Mardani

Sigma denoises learned continuous token embeddings in blocks, starting from autoregressive pretrained weights. Studies how guidance and temperature affect mathematical reasoning, coding, output diversity, and performance when fewer refinement steps are used.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2610.02665
First posted arXiv

The Surprising Effectiveness of Shared Memory in Looped Transformers

Giovanni Monea, Keshav Ramji, Yousef El-Kurdi, Luis A. Lastras, Yoav Artzi, Nathan Godey, Ramón Fernandez Astudillo

Shares a long-context KV memory written by the first loop across later loops, which also keep a short local memory. Studies this architecture during pretraining and examines how shared memory changes representations and gradient flow.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.02383
First posted arXiv

Hierarchical Continuous Diffusion Language Models

Hui Ren, Zihan Li, Chang Liu, Huidong Liu, Alexander Schwing

Keeps a continuous state throughout denoising while reading out tokens at each step and feeding them back into the next state update. Tests whether this coupling preserves dependencies during parallel generation on Sudoku, Countdown, and language modeling.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2610.02193
First posted arXiv

Decoding Looped Transformers Better for (Almost) Free

Weihao Liu, Huangjie Zheng, Tianrong Chen, Rohit Dilip, Richard He Bai, Yizhu Jiao, Yuyang Wang, Ruixiang Zhang

Compares a looped model's final prediction with predictions from earlier loops to improve decoding without additional training. Tests contrastive variants using either output logits or hidden states on mathematical reasoning and code generation.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.02185
First posted arXiv

Temporally-Resolved Token Attribution Reveals the Generation Dynamics of Diffusion Language Models

Darpan Aswal, Céline Hudelot

Extends integrated-gradient attribution across layers and denoising steps to examine which inputs influence a diffusion model's developing response. Includes multi-hop graph reasoning; the authors present attribution as a complement to, not a replacement for, causal intervention.

Analysis and evaluationAlternative generation methods
Paper ↗ Details & citations arXiv:2610.01177
First posted arXiv

Rotate the Loop: Blockwise Conformality for Looped Transformers

Alexey Zemtsov, Albina Klepach, Vadim Lomshakov, Andrei Polubarov, Nikita Lyubaykin, Alexander Derevyagin, Vladislav Kurenkov, Alexander Nikulin

Splits the recurrent residual into groups and rotates each group separately, aiming to preserve information across repeated transformer loops. Evaluates state tracking and language modeling.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.14030
First posted arXiv

Closing the Loop: Practical Training Recipes for Looped Language Models

Andrei Marchenko, Viacheslav Bezrukov, Oleg Kashurin, Inessa Fedorova, Dmitry Bocharov, Yuliana Shakhvalieva, Maria Tikhonova, Valerii Ternovskii

Gives training recipes for looped language models both from scratch and by converting pretrained models. Uses controlled data and compute comparisons to separate the benefit of recurrence from the training setup.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2610.00673
First posted arXiv

Exploring More, Reasoning Better: Stepwise Risk-Sensitive GRPO for Diffusion Language Models

Yue Yu, Bowen Zuo, David Crandall, Yinglun Zhu, Dongruo Zhou

Changes how outcome rewards weight decisions at different denoising states during diffusion-model reinforcement learning. Derives the effect for binary rewards and uses matched-scale controls to test whether the schedule improves mathematical accuracy and reasoning-trace diversity.

Alternative generation methods
Paper ↗ Details & citations arXiv:2610.00661
First posted arXiv

Scaling Laws for Looped Mixture of Experts

Yanbei Chen, Anirudh Goyal, Raghuraman Krishnamoorthi

Fits scaling laws that jointly account for recurrent depth, expert sparsity, model size, and training data in looped mixture-of-experts models. Uses them to study how to allocate resources under compute and memory constraints.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2609.40316
First posted arXiv

What Limits Recursive Reasoning Models: Optimization, Architecture and Test-Time Scaling

Yuliana Shakhvalieva, Dmitrii Kharchev, Viacheslav Bezrukov, Inessa Fedorova, Dmitry Bocharov, Ivan Oseledets, Valerii Ternovskii

Compares recursive reasoning models under a common training and evaluation setup. Isolates the effects of gradient propagation, batch size, state updates, and hierarchical structure on algorithmic tasks and generalization.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2609.39967
First posted arXiv

LatentHarness: Learning Latent Actions for Memory and Reasoning via Counterfactual Policy Distillation

Xiaoqiang Wang, Suyuchen Wang, Bang Liu

Learns when to perform another internal reasoning step, recall stored evidence or intermediate states, or emit a token. Trains these choices by branching over alternative actions and measuring their effects on the next emitted token.

Continuous-state reasoningRecurrent reasoning
Paper ↗ Details & citations arXiv:2609.39740
First posted arXiv

Blackboard Intelligence Can Surpass Autoregressive on Globally Constrained Problems

Woosang Jeon, Jaeyeon Kim, Sham Kakade, Yilun Du, Amrit Singh Bedi, Arun Kumar Chithanar, Chul Lee, Taehyeong Kim, Sitan Chen

Uses a fixed, revisable output and model confidence to search over candidate solutions with a frozen fine-tuned diffusion checkpoint. Evaluates logic and scheduling problems where global constraints can make irrevocable left-to-right commitments costly.

Alternative generation methods
Paper ↗ Details & citations arXiv:2609.38806
First posted arXiv

LoopVL: Recurrent Visual Intelligence

Zhe Qian, Ziyang Gong, Zhongxing Xu, Hehan Li, Zhonghua Wang, Hanmeng Liu, Liwei Qian, Xin Pei, Peizhi Xu, Fei Luo, Mingxuan Wang, Xue Yang, Shiwei Liu, Yanbiao Ma, Junchi Yan, Jungong Han

Extends shared-module and whole-model looping to vision-language models, repeatedly updating a joint visual-language state. Trains from scratch through language and multimodal stages and evaluates visual understanding and reasoning.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2609.38426
First posted arXiv

Looped Transformers as Optimizers

Yulong Huang, Chen Jiang, Zhanpeng Zhou, Hongtao Zhang, Tianyu Li, Tianyu He, Xiangyu Zhang, Bojun Cheng

Treats each recurrent hidden-state update as an optimization step and derives loop designs from this view. Introduces OperLoop, combining adaptive step sizes and weight decay.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2609.37379
First posted arXiv

Scheduling Recursive Reasoning in Looped Transformers

Boyuan Wang, Chengyao Yu, Jiaxi Ren, Hongxin Wei, Bingyi Jing, Yuxin Tao

Adjusts the size of each hidden-state update based on whether recent updates make consistent progress or fluctuate. Tests the resulting scheduler with and without additional training.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2609.36653
First posted arXiv

Reliable Parallel Decoding in Masked Diffusion Language Models

Zhenghao He, Bohan Liu, Guangzhi Xiong, Aidong Zhang

Studies when simultaneously committing several predicted tokens breaks their reasoning dependencies. RPD combines stability across final layers with confidence and uncertainty in preceding positions to defer unsupported predictions while retaining parallel text generation.

Analysis and evaluationAlternative generation methods
Paper ↗ Details & citations arXiv:2609.36452
First posted arXiv

How to Loop MoE: Flatten the Experts, Untie the Attention

Shouren Wang, Chuang Ma, Mohsen Hariri, Debargha Ganguly, Wang Yang, Xiaoqing Tong, Qianying Liu, Xiaotian Han, Vipin Chaudhary

Builds a looped mixture-of-experts model by pooling experts across layers and revisiting them. Shares experts and routing across passes while giving each pass its own attention parameters.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2609.35751
First posted arXiv

Reasoning with Continuous Latent Diffusion

Xiang Cheng

CEDR learns compact representations from several teacher layers, denoises them at different rates, and trains a smaller prompt encoder to replace the teacher at inference. It generates complete mathematical and coding solutions through continuous refinement before text decoding.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.35694
First posted arXiv

Why Deterministic PRM Guidance Underperforms in Discrete Diffusion Reasoning

Yan Zhan, Shaobo Liu, Zhijun Gao

Compares process-reward guidance with independent sampling and final-answer reranking at matched forward-pass budgets. In the tested diffusion models, early pruning removes promising candidates and intermediate-state scorers can be poor final judges; the generated solutions remain textual.

Analysis and evaluationAlternative generation methods
Paper ↗ Details & citations arXiv:2609.35472
First posted arXiv

Shallow Queries, Mature Values: Depth-Asynchronous Self-Speculation for Looped Transformers

Guanghao Li, Zihan Su, Hao Yu, Jinyang Jiang, Tao Ren, Zehao Li, Feng Lu, Ming Tang, Chun Yuan

Uses shallower-loop queries with values from deeper loops to improve draft-token predictions in a looped language model. Studies the different rates at which queries, keys, and values develop, and uses that difference for self-speculative decoding.

Recurrent reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.34538
First posted arXiv

Distilling Visual Reasoning into Text Space

Wenhan Yang, Nilay Naharas, Ali Payani, Baharan Mirzasoleiman

Distills a teacher's interleaved visual and textual reasoning into a student that no longer generates intermediate visual representations. The student still writes a textual chain of thought; what is internalized is the visual portion of the reasoning.

Internalized reasoning
Paper ↗ Details & citations arXiv:2609.34408
First posted arXiv

Loop Dropout: Regularizing Shared Updates in Looped Language Models

Zirui Zhu, Hailun Xu, Xuanlei Zhao, Yong Liu, Yingxuan Ren, Kanchan Sarkar, Kun Xu, Yang You

Regularizes fine-tuning of looped language models by randomly masking adapter updates at selected loops. The shared backbone still runs at every loop; the method targets adapter updates that otherwise become concentrated at particular depths.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2609.34218
First posted arXiv

VaME: Exploring Variational Latent Reasoning for Multimodal Embeddings

Peixi Wu, Mingzhou Jiang, Feipeng Ma, Biao Yang, Yunhao Zhou, Wei Yuan, Bosong Chai, Huizu Lin, Jie Chen, Zhangchi Hu, Fan Yang, Wenwu Ou, Hebei Li, Xiaoyan Sun

Learns a distribution over continuous reasoning trajectories before producing a retrieval embedding. A lightweight decoder provides reconstruction supervision and a semantic reward for reinforcement learning, evaluated on image, video, and visual-document retrieval.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2609.33402
First posted arXiv

Next Thoughts Are Distributions: Generative Autoregressive Reasoning in the Latent Space

Yang Li, Yi Wang, Shiyuan Huang, Yang Liu, Hao Wang, Chengzhi Mao

Adds a diffusion head that samples the next continuous thought from a distribution rather than predicting one fixed vector. Feeds each sampled thought back into an autoregressive reasoner, supporting variable-length latent traces and multiple reasoning paths.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.33271
First posted arXiv

Structured Sparse Memory for Recurrent Reasoning

Zixuan Zhao, Samuel Wheeler, Neil Getty, Xiaotian Duan, Rick Stevens, Fangfang Xia

Combines a recurrent reasoner with sparse, compositional task embeddings for ARC puzzles. Studies how task-memory size, recurrent depth, and training horizon affect performance.

Recurrent reasoning
Paper ↗ Details & citations arXiv:2609.33270
First posted arXiv

Ceiling of a Task: When Can a Transformer Succeed Without Its Chain of Thought?

Jiashu He, Jinxuan Fan, Xiao Xiao, Radu Marculescu, Alejandro Ribeiro

Analyzes tasks for which a fixed-depth transformer needs an informative chain of thought to exceed a task-specific accuracy limit. Combines circuit-based results with experiments that replace, erase, or shuffle reasoning tokens, including comparisons with filler tokens.

Analysis and evaluationThinking tokens
Paper ↗ Details & citations arXiv:2609.33134
First posted arXiv

Skip the Talk, Re-Focus on Vision: Latent Reasoning for Reasoning Segmentation in Multimodal Large Language Models

Tianhang Guo, Yulin He, Wei Chen, Wenjuan Zhou, Yuhang Li, Xinbiao Gan

LIRSeg generates a fixed sequence of learned special tokens before a target description and bounding box used for segmentation. Spatial alignment grounds the tokens' hidden states in relevant image regions, followed by training with segmentation rewards.

Thinking tokens
Paper ↗ Details & citations arXiv:2609.30783
First posted arXiv

Task-Oriented Key-Layer KV Communication for Efficient Latent Multi-Agent Collaboration

Dongsen Zhang, Peipei Li, Zekun Li, Wenjun Xu

Lets agents perform hidden-state reasoning and pass working memory through the key-value cache of one selected transformer layer. Reuses that layer as the entry point for subsequent reasoning updates, avoiding earlier layers and decoding only the final agent's response into text.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2610.08820
First posted arXiv

ELF-REG: Scaling Continuous Diffusion Language Models to Reasoning Tasks

Zeyu Michael Li, William Xingxu Chen, Bingshuo Qian, Jiayin Liu, Xiang Cheng

Adapts continuous diffusion to mathematics and code using intermediate-feature supervision and a global representation from a frozen autoregressive teacher. It denoises continuous response representations and decodes all response tokens only at the end.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.29102
First posted arXiv

Towards Efficient Reasoning: Learning Causal Shortcuts for Diffusion Language Models

Dian Jin, Kairong Han, Baohong Li, Xinpeng Dong, Zijing Hu, Nuanqiao Shan, Fei Wu, Kun Kuang

Extracts reasoning-guiding token chains and prioritizes them during diffusion-model training to improve denoising speed and accuracy. This is a related text-generating approach, not reasoning without a written trace.

Alternative generation methods
Paper ↗ Details & citations arXiv:2609.28272
First posted arXiv

LOCKR: A Hidden-State Trajectory-Guided Planner for Detecting and Repairing Stable-but-Wrong Lock-In in Diffusion Language Models

Guoshenghui Zhao, Tan Yu, Weijie Zhao

Uses the history of diffusion hidden states to detect answers that become stable but remain wrong. A planner selects targeted repair branches and verifies continuations, testing whether these internal trajectories support better repair decisions than confidence or a single snapshot.

Analysis and evaluationAlternative generation methods
Paper ↗ Details & citations arXiv:2609.27220
First posted arXiv

LADDER: Graph-Guided Diffusion Language Models for Efficient Multi-Hop Reasoning

Senlei Zhang, Linhao Luo, Qian-Wen Zhang, Siyu An, Junnan Dong, Shuhao Zhang, Xing Sun

Triggers graph retrieval when new entities become identifiable in a partially denoised draft, then uses graph propagation to provide multi-hop evidence for subsequent updates. This combines retrieval with parallel textual reasoning rather than removing the text trace.

Alternative generation methods
Paper ↗ Details & citations arXiv:2609.24346
First posted arXiv

Trading Depth for Time in Recurrent Transformers

Zeyi Huang, Xuehai He, Yelong Shen, Yong Jae Lee

Inserts a hidden-state refinement step between consecutive text tokens in a recurrent transformer. Compares this extra thinking time with adding physical layers or transformer loops under matched computation budgets.

Recurrent reasoningThinking tokens
Paper ↗ Details & citations arXiv:2609.21605
First posted arXiv

CaLR: Causal Latent Revision for Robust Diffusion Reasoning

Wei Cai, Jian Zhao, Yuchen Yuan, Xuelong Li

Uses an expert-derived causal dependency matrix to guide gradient-based revision of diffusion reasoning states. The aim is to preserve logical dependencies while revising several intermediate positions during parallel generation.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.20981
First posted arXiv

Schema-Anchored Latent Reasoning for Semantic Parsing-Based Knowledge Base Question Answering

Guangze Gao, Zixuan Li, Sikui Zhang, Chunfeng Yuan, Wenjuan Li, Bing Li, Xiaolong Jin, Weiming Hu

Aligns continuous thoughts with a codebook of knowledge-base relations and classes, using schema traces derived from correct logical forms. Feeds the aligned codes into later reasoning steps before generating an executable query.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2609.20398
First posted arXiv

Uni-LaDiR: Latent Diffusion Unifies Multimodal Reasoning

Haoqiang Kang, Yizhe Zhang, Nikki Lijing Kuang, Jiatao Gu, Yian Ma, Lianhui Qin

Encodes teacher reasoning steps from text, images, point clouds, and robot states into a shared continuous representation. A jointly trained diffusion reasoner generates these states at inference, evaluated on visual question answering and robotic manipulation.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.19878
First posted arXiv

Learn Your Own Thoughts: Abstract Token Curriculum

Khashayar Gatmiry, Avrajit Ghosh, Parsa Mirtaheri, Jason D. Lee, Nika Haghtalab, Emmanuel Abbe, Peter Bartlett

Trains on progressively harder problems so that a model learns continuous intermediate thoughts without explicit reasoning-step supervision. Analyzes parity learning theoretically and tests graph reachability and arithmetic.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2609.19717
First posted arXiv

How Model Growth, Recursion, and Boundary Operators Influence Scaling Exponents

Zixi Chen, Akshay Vegesna, Samip Dahal, Andrew Gordon Wilson

Studies how growing a model during training, reusing layers, and modifying the connections between repeated blocks affect language-model scaling. Compares shared and unshared weights and operators that normalize or reintroduce earlier representations.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2609.19107
First posted arXiv

Right Direction, Wrong Step: Geometric Analysis of Finite-Step Failure in Looped Transformers

Zhihao Guo, Zonghan Wu, Haizhou Du, Huan Huo, Yilei Shao, Athanasios V. Vasilakos, Qingsong Wen

Studies updates that initially increase support for a reference answer but overshoot when applied in full. Uses curvature along each update to explain failures and identify smaller useful steps.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2609.16665
First posted arXiv

Register Tokens for Bounded-State Reasoning in Diffusion Language Models

Albert Ge, Chandan Singh, Yufan Zhuang, Xiaodong Liu, Jianfeng Gao, Frederic Sala

Trains a diffusion language model to carry a fixed number of continuous register states between generated chunks. The model still writes text within each chunk, but clears earlier text and continues from the prompt and retained registers.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.16372
First posted arXiv

CanvasAnneal: Curriculum Reinforcement Learning for Diffusion Language Models

Blake Olson, Yuhang Song, Emmett McQuinn, Yuan Shangguan

Starts diffusion-model reinforcement learning with teacher-written reasoning partially filled into the output, then gradually removes that guidance. Tests whether this curriculum improves exploration on mathematics and tool-use tasks; inference still produces textual reasoning.

Alternative generation methods
Paper ↗ Details & citations arXiv:2609.13060
First posted arXiv

Structural Process Supervision for Latent Chain-of-Thought Reasoning

Yiqi Li, Xu Chen, Chen Ju, Jiangchao Yao, Zhaoyang Li, Jinsong Lan, Xiaoyong Zhu, Yu Wang

Aligns continuous thoughts with written reasoning through shared, learnable prototypes, allowing several text steps to supervise several latent states. A positional alignment constraint is gradually relaxed during training.

Continuous-state reasoning
Paper ↗ Details & citations arXiv:2609.09928
First posted arXiv

Fractal basins trap latent reasoning

Jeffrey Lai, Anthony Bao, John Quinn, William Gilpin

Studies recurrent reasoning trajectories as dynamical systems on puzzles and mathematical logic. Links long solution times in the tested models to transient trapping near unstable states associated with nearly correct solutions.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2609.04963
First posted arXiv

Diffusion as a Training Curriculum for Timestep-Free Iterative Reasoning

Mariia Drozdova, Aidan Sirbu, Pietro Miotti, Robert Obryk, Mayalen Etcheverry, Eyvind Niklasson, Blake Richards

Turns a diffusion denoiser into a recurrent puzzle solver by adding a persistent hidden state and removing timestep conditioning. Separates the role of denoising during training from the role of repeated updates and noise at inference.

Recurrent reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2609.01449
First posted arXiv

SMELT: Scaling Laws for Compute-Matched MoE Looped Transformers

Shaowen Wang, Ge Zhang, Kairong Luo, Yuhao Wu, Shaofan Liu, Jiaheng Liu, Wenhao Huang, Shen Yan, Jian Li

Loops the middle half of a mixture-of-experts transformer twice while matching an unlooped baseline on computation, parameter count, and KV-cache size. Studies how the comparison changes with model scale and examines the attention patterns produced by revisiting layers.

Recurrent reasoningAnalysis and evaluation
Paper ↗ Details & citations arXiv:2609.01343
First posted arXiv

A Score Is Not a Policy: Measuring the Value of Adaptive Revision

Ayushi Chadha

Tests when a hierarchical reasoner should revise the internal plan guiding its lower-level computation. Compares learned revision schedules with fixed schedules, separating whether a controller responds to its state from whether that response improves decisions.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2609.00874
First posted arXiv

Dissecting Hierarchical Reasoning Models: A Mechanistic Study

Leo Raphael Rodrigues, Jian Kang

Uses state interventions, probes, and feature ablations to study how hierarchical recurrent models solve Sudoku, mazes, and ARC tasks. Compares hierarchical and single-state recurrence, and distinguishes information that can be read from a state from information that causally affects an answer.

Analysis and evaluationRecurrent reasoning
Paper ↗ Details & citations arXiv:2609.22197
First posted arXiv

Detecting Hidden Chain-of-Thought in Large Language Models with Linguistic, Behavioral, and Mechanistic Indicators

Armaan Singh, Ryan Trinh Le, Jasmine Kaur, Abdullah Sultan, Edward Lue Chee Lip, Kiran Nijjer, Adnan Ahmed, Vasu Sharma

Compares behavior under neutral, explicit-CoT, and no-CoT prompts using linguistic and internal-state measurements. Its score measures resemblance to CoT behavior, not direct evidence of a hidden reasoning trace; calibration controls expose important confounds.

Analysis and evaluation
Paper ↗ Details & citations arXiv:2608.29956
First posted arXiv

Observable Patterns Are Not Explanations: A Causal-Geometric Analysis of Latent Reasoning Models

Darpan Aswal, Thomas Palmeira Ferraz, Yongxin Zhou, Maxime Peyrard

Compares Coconut and CODI with controls lacking their proposed reasoning recurrence or curriculum. Finds that decodable patterns can also appear in controls, while interventions reveal varying causal use of latent states concentrated in low-dimensional directions.

Analysis and evaluationContinuous-state reasoning
Paper ↗ Details & citations arXiv:2606.12689
First posted ACL 2026

Unlocking the Black Box of Latent Reasoning: An Interpretability-Guided Approach to Intervention

Shuochen Chang, Tong Bai, Xiaofeng Zhang, Qianli Ma, Qingyang Liu, Zhaohe Liao, Yibo Miao, Li Niu

Uses probes, ablations, and targeted edits to study how continuous reasoning states affect answers. Builds interventions from learned semantic mappings and geometric constraints, improving the evaluated models by editing their latent states without updating base-model weights.

Analysis and evaluationContinuous-state reasoning
Paper ↗ Details & citations arXiv:2606.01243
First posted arXiv

Chain Of Thought Compression: A Theoretical Analysis

Juncai Li, Ru Li, Yuxiang Zhou, Boxiang Ma, Jeff Z. Pan

Analyzes how skipping intermediate steps weakens learning signals in a simplified parity-task model. Introduces NatBool-DAG to test logical dependencies and ALiCoT, which supervises learned token states with intermediate logical labels or explicit-CoT representations.

Analysis and evaluationInternalized reasoningThinking tokens
Paper ↗ Details & citations arXiv:2601.21576
First posted arXiv

Do Latent Tokens Think? A Causal and Adversarial Analysis of Chain-of-Continuous-Thought

Yuyi Zhang, Boyu Tang, Tianjie Ju, Sufeng Duan, Gongshen Liu

Tests COCONUT with latent-state interventions and deliberately biased examples on MMLU and HotpotQA. Finds weak sensitivity to steering and dependence on dataset shortcuts in the evaluated models, challenging whether their intermediate states faithfully carry the reasoning.

Analysis and evaluationContinuous-state reasoning
Paper ↗ Details & citations arXiv:2512.21711
First posted arXiv

LaDiR: Latent Diffusion Enhances LLMs for Text Reasoning

Haoqiang Kang, Yizhe Zhang, Nikki Lijing Kuang, Nicklas Majamaki, Navdeep Jaitly, Yi-An Ma, Lianhui Qin

Uses a variational autoencoder to compress textual reasoning steps into blocks of continuous states. A diffusion model repeatedly revises each block before generating the next, then produces a textual answer; diversity guidance encourages alternative reasoning trajectories.

Continuous-state reasoningAlternative generation methods
Paper ↗ Details & citations arXiv:2510.04573
First posted arXiv

LLMs are Single-threaded Reasoners: Demystifying the Working Mechanism of Soft Thinking

Junhong Wu, Jinliang Lu, Zixuan Ren, Gangqiang Hu, Zhi Wu, Dai Dai, Hua Wu

Probes soft-token reasoning and finds that tested models often follow the highest-probability component rather than exploring several paths at once. Introduces stochastic soft thinking, including Gumbel-Softmax sampling, to reduce this greedy behavior.

Analysis and evaluationContinuous-state reasoning
Paper ↗ Details & citations arXiv:2508.03440