Claude Sonnet 4
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),...
The figures
- Made by
- Anthropic
- Model ID
- anthropic/claude-sonnet-4
- Input
- $3 per million tokens
- Output
- $15 per million tokens
- Context window
- 200K tokens
- Longest answer
- 64K tokens
- Takes in
- image, text, file
- Gives back
- text
- Reasoning
- Yes
- Tool calling
- Yes
- Reads images
- Yes
- Open weights
- No
- Released
- 22 May 2025
Read on 3 Oct 2026.