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Claude Opus 4.5
🇺🇸Anthropic7mo
Neura Index
72.0
Rank #58—
mediumCategory Profile
Benchmark Scores (6)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 87 | verified |
| ARC-AGI v2 | 37.6 | verified |
coding
| Benchmark | Score | Source |
|---|---|---|
| SWE-bench Verified | 80.9 | verified |
general
| Benchmark | Score | Source |
|---|---|---|
| MMMLU | 90.8 | verified |
Performance History
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Frequently Asked Questions about Claude Opus 4.5
What is Claude Opus 4.5's Neura Intelligence Index score?▾
Claude Opus 4.5 by Anthropic scores 72.0 out of 100 on the Neura Intelligence Index, ranking #58 among tracked AI models. This composite score is computed from 6 individual benchmarks across coding, math, reasoning, and language categories.
Is Claude Opus 4.5 open source?▾
No, Claude Opus 4.5 is a proprietary model by Anthropic. It is only accessible via their API.
What benchmark does Claude Opus 4.5 perform best on?▾
Claude Opus 4.5 achieves its highest score on MMMLU with a score of 90.8%. This benchmark evaluates multilingual massive multitask language understanding across many languages.