Claude Opus 4.6
AnthropicAnthropic's most intelligent model. Leads on frontier reasoning, coding, and research.
Context window200K tokens
Input / 1M tokens$15
Output / 1M tokens$75
Version History
claude-opus-4-6-20260217February 17, 2026
Claude Opus 4.6 — major GPQA and reasoning improvements; ARC-AGI-2 jump from 37.6% to 68.8%.