AnthropicClaude Opus
Claude Opus 5.5
Anthropic · Claude Opus. Released Sep 22, 2026.
Claude Opus 5.5 is a model from Anthropic in the Claude Opus family, released Sep 22, 2026. evals.report tracks 4 reported Claude Opus 5.5 benchmark scores across FrontierCode, AA-Omniscience: Knowledge and Hallucination Benchmark, ARC-AGI-1, ARC-AGI-2 — each shown with its benchmark, metric, source status, and date, and never combined into a single ranking.
4 results
Benchmark results 4
Compare this model| Benchmark | Category | Score | Metric | Status | Date | |
|---|---|---|---|---|---|---|
| FrontierCode | Coding | 54.6% | weighted score (Main) | Official | Sep 22, 2026 | Details |
| AA-Omniscience: Knowledge and Hallucination Benchmark | Reasoning | 46 | AA-Omniscience Index | Official | Sep 22, 2026 | Details |
| ARC-AGI-1 | Reasoning | 98.5% | accuracy | Official | Sep 22, 2026 | Details |
| ARC-AGI-2 | Reasoning | 93.33% | accuracy | Official | Sep 22, 2026 | Details |