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ArXivMath August 2026 without tools

Final-answer research mathematics problems drawn from recent arXiv papers, including problems based on resolved or refuted conjectures.

2 models

Higher is better.

  1. 1Claude Opus 5.5Anthropic91.2
  2. 2Claude Sonnet 5.5Anthropic86.8
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
Final-answer accuracy
Tasks
57 recent research-mathematics problems
Authors
MathArena and Anthropic (2026)

Scores are as reported by model developers or evaluators and may use different settings (for example reasoning effort or tools). Compare with care.