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Claude Opus 5
🇺🇸Anthropic3w
Context:1.0M tokens
Input:$5/1M
Output:$25/1M
Neura Index
95.5
Rank #5—
lowCategory Profile
Benchmark Scores (2)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| Humanity's Last Exam | 64.7 | verified |
agent
| Benchmark | Score | Source |
|---|---|---|
| BrowseComp | 90.8 | verified |
Performance History
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Frequently Asked Questions about Claude Opus 5
What is Claude Opus 5's Neura Intelligence Index score?▾
Claude Opus 5 by Anthropic scores 95.5 out of 100 on the Neura Intelligence Index, ranking #5 among tracked AI models. This composite score is computed from 2 individual benchmarks across coding, math, reasoning, and language categories.
How much does Claude Opus 5 cost to use?▾
Claude Opus 5 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 5 open source?▾
No, Claude Opus 5 is a proprietary model by Anthropic. It is only accessible via their API.
What is Claude Opus 5's context window?▾
Claude Opus 5 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 5 perform best on?▾
Claude Opus 5 achieves its highest score on BrowseComp with a score of 90.8%. This benchmark evaluates web browsing comprehension — finding specific information across complex web pages.