Recognition: no theorem link
WizardMath: Empowering Mathematical Reasoning for Large Language Models via Reinforced Evol-Instruct
Pith reviewed 2026-05-17 03:56 UTC · model grok-4.3
The pith
WizardMath applies reinforced evol-instruct feedback to boost LLMs' math chain-of-thought reasoning without external tools.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
By applying Reinforcement Learning from Evol-Instruct Feedback (RLEIF) to the math domain, WizardMath enhances the mathematical CoT reasoning abilities of LLMs without using external python tools, yielding WizardMath-Mistral 7B that surpasses top-tier open-source LLMs and WizardMath 70B that outperforms GPT-3.5-Turbo, Claude 2, Gemini Pro and GPT-4-early-version on GSM8K and MATH.
What carries the argument
Reinforcement Learning from Evol-Instruct Feedback (RLEIF), which evolves math instructions iteratively and reinforces correct reasoning steps through feedback.
Load-bearing premise
The reported performance gains stem primarily from the RLEIF procedure rather than from differences in the base model, data mixture, or evaluation protocol.
What would settle it
A controlled experiment that fine-tunes the identical base models on the same evolved instructions but omits the reinforcement learning feedback loop and checks whether the large accuracy lifts on GSM8K and MATH still appear.
read the original abstract
Large language models (LLMs), such as GPT-4, have shown remarkable performance in natural language processing (NLP) tasks, including challenging mathematical reasoning. However, most existing open-source models are only pre-trained on large-scale internet data and without math-related optimization. In this paper, we present WizardMath, which enhances the mathematical CoT reasoning abilities of LLMs without using external python tools, by applying our proposed Reinforcement Learning from Evol-Instruct Feedback (RLEIF) method to the domain of math. Through extensive experiments on two mathematical reasoning benchmarks, namely GSM8k and MATH, we reveal the extraordinary capabilities of our model. Remarkably, WizardMath-Mistral 7B surpasses top-tier open-source LLMs by a substantial margin with higher data efficiency. Furthermore, WizardMath 70B even outperforms GPT-3.5-Turbo, Claude 2, Gemini Pro and GPT-4-early-version. Additionally, our preliminary exploration highlights the pivotal role of instruction evolution and process supervision in achieving exceptional math performance. For more details refer to https://github.com/nlpxucan/WizardLM
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper introduces WizardMath, which applies Reinforcement Learning from Evol-Instruct Feedback (RLEIF) to boost chain-of-thought mathematical reasoning in LLMs without external tools. It reports that WizardMath-Mistral-7B substantially outperforms leading open-source models on GSM8k and MATH, while WizardMath-70B surpasses GPT-3.5-Turbo, Claude 2, Gemini Pro, and an early GPT-4 variant; a preliminary analysis emphasizes the roles of instruction evolution and process supervision.
Significance. If the gains are shown to stem specifically from RLEIF rather than data quality or base-model differences, the work would provide a practical recipe for elevating open-source mathematical reasoning to near-proprietary levels using only evolved instructions and process-level RL, with the preliminary ablation-style exploration of evolution and supervision serving as a useful starting point for follow-on research.
major comments (2)
- [Experiments] The manuscript provides no direct SFT-only baseline trained on the identical Evol-Instruct dataset before applying the RL stage. Without this comparison, it remains unclear whether the headline gains on GSM8k and MATH are driven by the RLEIF reinforcement step or simply by the quality of the evolved data.
- [Abstract and §4] Benchmark results in the abstract and main results section are presented without error bars, details on prompt formatting, data exclusion criteria, or full training curves. These omissions make it difficult to assess the statistical reliability of the claim that WizardMath-70B outperforms the listed closed models.
minor comments (2)
- [Conclusion] The GitHub link is referenced but the paper would benefit from an explicit statement of which artifacts (code, data splits, evaluation prompts) are released.
- [Method] Notation for the process-supervision reward model could be introduced earlier and used consistently in the method description.
Simulated Author's Rebuttal
We thank the referee for the constructive feedback. We address each major comment below and will revise the manuscript to incorporate the suggested improvements where feasible.
read point-by-point responses
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Referee: [Experiments] The manuscript provides no direct SFT-only baseline trained on the identical Evol-Instruct dataset before applying the RL stage. Without this comparison, it remains unclear whether the headline gains on GSM8k and MATH are driven by the RLEIF reinforcement step or simply by the quality of the evolved data.
Authors: We agree that an explicit SFT-only baseline on the identical dataset would help isolate the contribution of the RLEIF stage. In the revised manuscript we will add results from such a baseline trained on the same Evol-Instruct data, allowing direct comparison of performance before and after the reinforcement learning phase. revision: yes
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Referee: [Abstract and §4] Benchmark results in the abstract and main results section are presented without error bars, details on prompt formatting, data exclusion criteria, or full training curves. These omissions make it difficult to assess the statistical reliability of the claim that WizardMath-70B outperforms the listed closed models.
Authors: We acknowledge the value of these details for assessing reliability. The revised version will include error bars from repeated evaluations where computationally feasible, explicit prompt formatting descriptions, data exclusion criteria, and full training curves in the appendix to support the reported comparisons. revision: yes
Circularity Check
No circularity: empirical claims rest on external benchmarks without self-referential derivations
full rationale
The paper introduces the RLEIF procedure and reports accuracy numbers on GSM8k and MATH, comparing WizardMath variants against GPT-3.5-Turbo, Claude 2, Gemini Pro and early GPT-4. No equations appear that define a quantity in terms of itself, no fitted parameter is relabeled as a prediction, and no uniqueness theorem or ansatz is imported via self-citation to force the central result. The derivation chain consists of standard RL training steps whose outputs are evaluated on independent test sets; therefore the headline performance numbers are not equivalent to the inputs by construction.
Axiom & Free-Parameter Ledger
Forward citations
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Reference graph
Works this paper leans on
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[1]
URL https://api.semanticscholar.org/CorpusID:266818336. Tom B. Brown, Benjamin Mann, Nick Ryder, Melanie Subbiah, Jared Kaplan, Prafulla Dhari- wal, Arvind Neelakantan, Pranav Shyam, Girish Sastry, Amanda Askell, Sandhini Agar- wal, Ariel Herbert-V oss, Gretchen Krueger, Tom Henighan, Rewon Child, Aditya Ramesh, Daniel M. Ziegler, Jeffrey Wu, Clemens Wint...
work page internal anchor Pith review Pith/arXiv arXiv doi:10.18653/v1/2023 2020
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[2]
Association for Computational Linguistics. doi: 10.18653/v1/N19-1421. URL https: //aclanthology.org/N19-1421. 14 Published as a conference paper at ICLR 2025 Zhengyang Tang, Xingxing Zhang, Benyou Wan, and Furu Wei. Mathscale: Scaling instruction tuning for mathematical reasoning. arXiv preprint arXiv:2403.02884, 2024. Rohan Taori, Ishaan Gulrajani, Tiany...
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[3]
Instruction Evolution and SFT In the first step, we apply upward and downward instruction evolution on the GSM8k and MATH datasets, generating evolved instructions for the SFT. On the leftmost side of Figure 1, the three blue arrows, from top to bottom, represent: (a) the adoption of the instruction evolution technique, (b) the generation of evolved instr...
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[4]
A” represents the original instruction, while “B,
Reward Model Training The second step involves two reward models: the Instruction Quality Scoring Reward Model (IRM) and the Process-Supervised Reward Model (PRM), depicted in the central section of Figure 1. • IRM: We employ upward and downward evolution on a seed instruction, yielding five instructions (original + evolved). These instructions are ranked...
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[5]
Reinforcement Learning with PPO In the final step, we integrate the IRM and PRM within a Proximal Policy Optimization (PPO)-based reinforcement learning framework. As depicted in the far-right section of Figure 1, the process is as follows: (a) The first blue arrow represents instruction scoring by the IRM. (b) The second blue arrow shows PPO initializati...
work page 2025
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[6]
• On Llama-2-13B and Llama-2-70B, WizardMath-SFT achieves comparable perfor- mance to Xwin-Math
Performance Comparison: • On Llama-2-7B and Mistral-7B-v0.1, WizardMath-SFT performs marginally below SOTA models (i.e.,Xwin-Math and Skywork-Math) and outperforms existing other excellent models (i.e.,DART-Math). • On Llama-2-13B and Llama-2-70B, WizardMath-SFT achieves comparable perfor- mance to Xwin-Math. • On all various base models, WizardMath-SFT s...
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[7]
Comparison with advanced data synthesis methods (i.e., DART-Math, MetaMath) As shown in the following Table 15, DART-Math demonstrates strong performance across various base models and the data synthesis method proposed by DART-Math shows the effectiveness and outstanding performance. Meanwhile, WizardMath-SFT demonstrates comparable or superior performan...
work page 2025
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[8]
It also significantly enhances the mathematical reasoning capabilities of our models
The proposed Math Evol Instruct data synthesis method is also as effective and practical as the current state-of-the-art data synthesis methods, such as DART-Math, Skywork-Math and Xwin-Math in the SFT stage. It also significantly enhances the mathematical reasoning capabilities of our models
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[9]
The proposed IRM and PRM models substantially improve performance during the reinforcement learning phase. They not only continuously enhance the mathematical reasoning abilities of our 34 Published as a conference paper at ICLR 2025 Table 18: The performance comparison of WizardMath-SFT with DART-Math, Xwin-Math, and Skywork-Math on the Llama2-7B base mo...
work page 2025
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[10]
In Table 6, we provide a detailed analysis of the effects of downward evolution
Unlike WizardLM/WizardCoder, which primarily focus on increasing instruction difficulty, we are the first to propose the novel concept of downward evolution, a major distinction in instruction evolution. In Table 6, we provide a detailed analysis of the effects of downward evolution. Specifically, two rounds of downward evolution led to a remarkable impro...
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[11]
In reinforcement learning (RL) training, we firstly propose the instruction quality scoring reward model (IRM) combined with the process supervision reward model (PRM) further enhancing WizardMath mathematical reasoning ability. As demonstrated in Table 3, our method achieves a remarkable 5%–8% improvement in GSM8k and MATH performance over the SFT backbo...
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[12]
Additionally, the training datasets for SFT, PRM, and IRM are fully synthesized using AI systems
We firstly propose to use AI to annotate the step-level PRM training data. Additionally, the training datasets for SFT, PRM, and IRM are fully synthesized using AI systems. This fully AI-automated data generation pipeline ensures scalability
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[13]
WizardMath demonstrates outstanding performance across a wide range of model scales, from 100M to 1B and 70B parameters, on the benchmarks such as GSM8k, MATH, and out-of- distribution (OOD) tasks like MWPBench(Tang et al., 2024). It surpasses all existing open-source state-of-the-art models, showcasing the effectiveness and robustness of the RLEIF approa...
work page 2024
discussion (0)
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