# Claude Opus 4 vs Claude Sonnet 4

Every finance benchmark where both have a score (Anthropic and Anthropic). Data refreshed 2 Nov 2026. Scores from different benchmarks use different scales and are not added up.

| Benchmark | Metric | Claude Opus 4 | Claude Opus 4 source | Claude Sonnet 4 | Claude Sonnet 4 source | Ahead |
| --- | --- | --- | --- | --- | --- | --- |
| CAIA (Crypto AI Agent Benchmark) | accuracy % (majority vote, 5 runs) (higher is better) | 57.3 | Paper Tables 2-3, 17 Jan 2026, https://arxiv.org/html/2510.00332v2 | 56.7 | Paper Tables 2-3, 17 Jan 2026, https://arxiv.org/html/2510.00332v2 | Claude Opus 4 |
| Advanced Financial Reasoning at Scale (CFA Level III evaluation) | overall % (mean of MCQ and essay) (higher is better) | 74.9 | Paper Table 1, 22 Sept 2025, https://arxiv.org/html/2507.02954v2 | 73.4 | Paper Table 1, 22 Sept 2025, https://arxiv.org/html/2507.02954v2 | Claude Opus 4 |

Source: https://benchmarks.finance/compare/claude-opus-4-vs-claude-sonnet-4/

Created and maintained by Moneda.