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Claude Opus 4
🇺🇸Anthropic· Claude 41y
Context:200K tokens
Input:$15/1M
Output:$75/1M
Neura Index
75.4
Rank #43—
highCategory Profile
Benchmark Scores (11)
coding
| Benchmark | Score | Source |
|---|---|---|
| HumanEval | 95.1 | |
| SWE-bench Verified | 55.8 |
Performance History
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Frequently Asked Questions about Claude Opus 4
What is Claude Opus 4's Neura Intelligence Index score?▾
Claude Opus 4 by Anthropic scores 75.4 out of 100 on the Neura Intelligence Index, ranking #43 among all AI models. This composite score is computed from 11 individual benchmarks across coding, math, reasoning, and language categories.
How much does Claude Opus 4 cost to use?▾
Claude Opus 4 costs $15/1M input tokens and $75/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $900.
Is Claude Opus 4 open source?▾
No, Claude Opus 4 is a proprietary model by Anthropic. It is only accessible via their API.
What is Claude Opus 4's context window?▾
Claude Opus 4 supports a context window of 200K tokens, allowing it to process very long documents, codebases, and conversations in a single request.
What benchmark does Claude Opus 4 perform best on?▾
Claude Opus 4 achieves its highest score on Chatbot Arena Elo with an Elo rating of 1365. This benchmark evaluates lmsys chatbot arena — crowdsourced blind comparison elo rating from human preferences.