Release
Claude Opus 4 released
Anthropic releases Claude Opus 4 and Claude Sonnet 4 with extended agentic capabilities.
Provider: Anthropic
Model: Claude Opus 4
Claude Opus 4 is Anthropic's most capable model, supporting 200k context, extended thinking, and agentic tool use. Claude Sonnet 4 is released simultaneously as the cost-efficient mid-tier option.