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Claude Opus 4.6
🇺🇸Anthropic5mo
Context:1.0M tokens
Input:$5/1M
Output:$25/1M
Neura Index
81.6
Rank #18—
highCategory Profile
Benchmark Scores (12)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 91.3 | verified |
| ARC-AGI v2 | 68.8 | verified |
| Humanity's Last Exam | 53.1 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 99.8 | verified |
coding
Performance History
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Frequently Asked Questions about Claude Opus 4.6
What is Claude Opus 4.6's Neura Intelligence Index score?▾
Claude Opus 4.6 by Anthropic scores 81.6 out of 100 on the Neura Intelligence Index, ranking #18 among all AI models. This composite score is computed from 12 individual benchmarks across coding, math, reasoning, and language categories.
How much does Claude Opus 4.6 cost to use?▾
Claude Opus 4.6 costs $5/1M input tokens and $25/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $300.
Is Claude Opus 4.6 open source?▾
No, Claude Opus 4.6 is a proprietary model by Anthropic. It is only accessible via their API.
What is Claude Opus 4.6's context window?▾
Claude Opus 4.6 supports a context window of 1.0 million tokens, allowing it to process very long documents, codebases, and conversations in a single request.
What benchmark does Claude Opus 4.6 perform best on?▾
Claude Opus 4.6 achieves its highest score on AIME 2025 with a score of 99.8%. This benchmark evaluates american invitational mathematics examination 2025 — competition-level math problems.