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AM-Thinking-v1: Advancing the Frontier of Reasoning at 32B Scale

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arxiv 2505.08311 v2 pith:CULZCWYB submitted 2025-05-13 cs.CL

classification cs.CL
keywords am-thinking-v1open-sourcereasoningmodelmodelsscaleaimecapabilities
verification ladder T0 review T1 audit T2 compute T3 formal
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We present AM-Thinking-v1, a 32B dense language model that advances the frontier of reasoning, embodying the collaborative spirit of open-source innovation. Outperforming DeepSeek-R1 and rivaling leading Mixture-of-Experts (MoE) models like Qwen3-235B-A22B and Seed1.5-Thinking, AM-Thinking-v1 achieves impressive scores of 85.3 on AIME 2024, 74.4 on AIME 2025, and 70.3 on LiveCodeBench, showcasing state-of-the-art mathematical and coding capabilities among open-source models of similar scale. Built entirely from the open-source Qwen2.5-32B base model and publicly available queries, AM-Thinking-v1 leverages a meticulously crafted post-training pipeline - combining supervised fine-tuning and reinforcement learning - to deliver exceptional reasoning capabilities. This work demonstrates that the open-source community can achieve high performance at the 32B scale, a practical sweet spot for deployment and fine-tuning. By striking a balance between top-tier performance and real-world usability, we hope AM-Thinking-v1 inspires further collaborative efforts to harness mid-scale models, pushing reasoning boundaries while keeping accessibility at the core of innovation. We have open-sourced our model on \href{https://huggingface.co/a-m-team/AM-Thinking-v1}{Hugging Face}.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Beyond Reasoning Gains: Mitigating General-Capability Forgetting in Large Reasoning Models

    cs.LG 2025-10 conditional novelty 6.0 of 10

    A dynamic replay and reweighting scheduler (RECAP) preserves general capabilities during RLVR while keeping reasoning performance at least as good as reasoning-only finetuning.

  2. Sticker-TTS: Learn to Utilize Historical Experience with a Sticker-driven Test-Time Scaling Framework

    cs.AI 2025-09 conditional novelty 6.0 of 10

    Sticker-TTS uses three collaborating models to distill and reuse compact summaries (stickers) of past reasoning attempts, improving math benchmark accuracy at a claimed equivalent inference cost.

  3. No Free Lunch: Rethinking Internal Feedback for LLM Reasoning

    cs.LG 2025-06 conditional novelty 5.0 of 10

    Internal feedback rewards (entropy and self-certainty) improve base LLM math reasoning only in early training and degrade later, with little benefit for instruct models.

  4. JT-Math: A Multi-Stage Framework for Advanced Mathematical Reasoning in Large Language Models

    cs.CL 2025-07 conditional novelty 4.0 of 10

    JT-Math-8B, an open 8B model family trained with a multi-stage math-focused pipeline, reports math benchmark averages above o1-mini and several 7B open models.

  5. MiroMind-M1: An Open-Source Advancement in Mathematical Reasoning via Context-Aware Multi-Stage Policy Optimization

    cs.CL 2025-07 conditional novelty 4.0 of 10

    MiroMind-M1 open-sources a two-stage SFT plus RLVR recipe with a new context-aware multi-stage policy optimization (CAMPO) that claims competitive AIME24, AIME25, and MATH500 scores among Qwen-2.5-based models.

  6. Towards Concise and Adaptive Thinking in Large Reasoning Models: A Survey

    cs.AI 2025-07 conditional novelty 3.0 of 10

    A comprehensive review that categorizes methods for shortening and adaptively triggering chain-of-thought reasoning in large language models.

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