The first Claude 4 flagship model, delivering breakthrough coding and agentic performance with 72.5% on SWE-bench Verified. Opus 4 excels at autonomous research, multi-step reasoning, and complex problem-solving with 200K context and extended thinking capabilities. Superseded by Opus 4.1 and later generations.
Try NowComplex multi-step problems requiring rigor
Advanced coding challenges
Agentic workflows
200,000 tokens
32,000 tokens
$15 per 1M tokens
$75 per 1M tokens
$1.50 per 1M tokens
$18.75 per 1M tokens
$10 per 1K calls
$0.0694 per 1K calls