This model is over 2 years old. A newer version of it has since shipped: Claude Opus 5 (2026-07-24). The details below are still accurate for this model — it just is not what we would recommend today.
Claude 3 Opus
Anthropic🇺🇸 United States
Anthropic's most capable Claude 3 model. Superseded by Claude 3.5 and 4 series.
Context window200K tokens
Input / 1M tokens$15
Output / 1M tokens$75
Version History
claude-3-opus-20240229major
Anthropic's most intelligent model at launch. Tops complex analysis, coding, and nuanced writing. Successor to Claude 2.1.