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 3.5 Sonnet (Jun 2024)
Anthropic🇺🇸 United States
Original Claude 3.5 Sonnet. Superseded by October 2024 version.
Context window200K tokens
Input / 1M tokens$3
Output / 1M tokens$15
Version History
claude-3-5-sonnet-20240620major
Claude 3.5 Sonnet debuts, surpassing Claude 3 Opus on most benchmarks at 5× lower cost. Sets new bar for coding and reasoning.