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Claude Opus 4.8
🇺🇸Anthropic1mo
Context:1.0M tokens
Input:$5/1M
Output:$25/1M
Neura Index
91.9
Rank #4—
highCategory Profile
Benchmark Scores (9)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 93.6 | verified |
| Humanity's Last Exam | 57.9 | verified |
coding
| Benchmark | Score | Source |
|---|---|---|
| SWE-bench Verified | 88.6 | verified |
| SWE-Bench Pro | 69.2 | verified |
agent
Performance History
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Frequently Asked Questions about Claude Opus 4.8
What is Claude Opus 4.8's Neura Intelligence Index score?▾
Claude Opus 4.8 by Anthropic scores 91.9 out of 100 on the Neura Intelligence Index, ranking #4 among tracked AI models. This composite score is computed from 9 individual benchmarks across coding, math, reasoning, and language categories.
How much does Claude Opus 4.8 cost to use?▾
Claude Opus 4.8 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 4.8 open source?▾
No, Claude Opus 4.8 is a proprietary model by Anthropic. It is only accessible via their API.
What is Claude Opus 4.8's context window?▾
Claude Opus 4.8 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 4.8 perform best on?▾
Claude Opus 4.8 achieves its highest score on GPQA Diamond with a score of 93.6%. This benchmark evaluates 448 graduate-level science questions (biology, chemistry, physics) designed to be hard for non-experts.