Claude Opus 4.1
Released
Claude Opus 4.1 is an AI model released by Anthropic on Tuesday, Aug 5 2025, 75 days after Claude Opus 4. Benchmark results (shown below) cover BullshitBench v2, SWE-Bench Verified, and GPQA Diamond.
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Available from
| Amazon Bedrock | — | $15.00 | $75.00 | 200K |
|---|---|---|---|---|
| global | $15.00 | $75.00 | 200K |
Benchmarks
Coding
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better.
74.5%
#30 of 57Best: Claude Opus 5 · 96%
Reasoning & science
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better.
80.9%
#34 of 59Best: GPT-6 Astra · 96%
Robustness
BullshitBench v2Nonsense detection — Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better.
43%
#35 of 77Best: Claude Opus 4.8 · 95%
Compare Claude Opus 4.1 with
Suggested comparisons
Claude Opus 4.1vsClaude Fable 5.1Claude Opus 4.1vsGPT-6 AstraClaude Opus 4.1vsGemini 3.8 FlashClaude Opus 4.1vsMuse Spark 1.3Claude Opus 4.1vsGrok 4.6Claude Opus 4.1vsDeepSeek-V4.1-FlashClaude Opus 4.1vsMistral Medium 3.5Claude Opus 4.1vsKimi K3Claude Opus 4.1vsGLM-5.3-FlashClaude Opus 4.1vsQwen3.8-Max-0902Claude Opus 4.1vsNemotron 3.5 Lightning
Frequently asked questions
Claude Opus 4.1 was released by Anthropic on Tuesday, Aug 5 2025.