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7 May 2025 · Paper summary

Paper summary: Absolute Zero: Reinforced Self-play Reasoning with Zero Data

Absolute Zero trains a model to propose its own coding and maths-style tasks and then solve them, with a code executor checking both, so reasoning improves through self-play with no external training data.

Figure from the paper "Absolute Zero: Reinforced Self-play Reasoning with Zero Data"
Figure from Zhao et al. (2025), licensed CC BY 4.0. Figure 1: Absolute Zero Reasoner (AZR) achieves state-of-the-art performance with ZERO DATA . Without relying on any gold labels or human-defined queries, Absolute Zero Reasoner trained using our proposed self-play …

Problem

RL with verifiable rewards (“zero” settings) avoids labelling reasoning steps, but still needs curated question–answer sets. The authors argue that relying on human-made examples won’t scale, and might limit a future system that’s better than humans.

Method

Absolute Zero: a single model learns to propose tasks that maximise its own learning progress, and to solve them. The Absolute Zero Reasoner (AZR) uses a code executor to:

  • validate that a proposed code-reasoning task is well-formed
  • verify the solver’s answers

The executor is the one source of verifiable reward, which keeps the open-ended curriculum grounded.

Key results

From the abstract: trained entirely without external data, AZR reaches overall state-of-the-art performance on coding and mathematical reasoning, beating zero-setting models that use tens of thousands of human-curated examples. It works across model scales and model classes. Figure 1 summarises the results.

Limitations

There’s no dedicated limitations section in the extracted text. The approach relies on tasks that a code executor can verify.

#llm#reasoning#rl#self-play

Sources

  1. Absolute Zero: Reinforced Self-play Reasoning with Zero Data (arXiv:2505.03335) — arXiv
  2. Hugging Face Daily Papers, 2025-05-07 — Hugging Face
  3. Absolute Zero: Reinforced Self-play Reasoning with Zero Data (arXiv HTML full text) — arXiv
  4. Code repository (linked in the paper) — GitHub

This is a summary written from the linked public sources. Figures and numbers are as reported there.