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Claude Sonnet 4
🇺🇸Anthropic· Claude 41y
Context:200K tokens
Input:$3/1M
Output:$15/1M
Neura Index
68.9
Rank #73—
highCategory Profile
Benchmark Scores (11)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| BigBench-Hard | 90.8 | |
| GPQA Diamond |
Performance History
Similar Models
Frequently Asked Questions about Claude Sonnet 4
What is Claude Sonnet 4's Neura Intelligence Index score?▾
Claude Sonnet 4 by Anthropic scores 68.9 out of 100 on the Neura Intelligence Index, ranking #73 among all AI models. This composite score is computed from 11 individual benchmarks across coding, math, reasoning, and language categories.
How much does Claude Sonnet 4 cost to use?▾
Claude Sonnet 4 costs $3/1M input tokens and $15/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $180.
Is Claude Sonnet 4 open source?▾
No, Claude Sonnet 4 is a proprietary model by Anthropic. It is only accessible via their API.
What is Claude Sonnet 4's context window?▾
Claude Sonnet 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 Sonnet 4 perform best on?▾
Claude Sonnet 4 achieves its highest score on Chatbot Arena Elo with an Elo rating of 1310. This benchmark evaluates lmsys chatbot arena — crowdsourced blind comparison elo rating from human preferences.