Claude Sonnet 4
anthropic/claude-4-sonnet-20250522
Claude Sonnet 4 is an Anthropic model that accepts image, text, and file inputs and generates text output. It provides a context window of 1 000 000 tokens, costs $3 per M input tokens and $15 per M output tokens, and includes support for tools and reasoning. The model is closed‑source and was released on 2025‑05‑14.
- tool use
- reasoning
At a glance
provideranthropic
releasedMay 14, 2025
context1M
input / M$3
Specifications
What the API gives you
- Context window
- 1M tokens
- Max output
- 64K tokens
- Input price
- $3 / 1M tokens
- Output price
- $15 / 1M tokens
- Cache read
- $0.30 / 1M tokens
- Modalities
- image, text, file → text
- Knowledge cutoff
- Jan 31, 2025
- Released
- May 14, 2025
Recommendation coverage
Where this model appears
Measured evidence
Public benchmark record
- Aider Polyglot
- 61.3%2026-07-17
- Aider Polyglot
- 61.3%2026-07-21
- LMArena Vision
- 1175 Elo2026-07-12
- SWE-bench Verified†
- 76.8%2025-09-02
- SWE-bench Verified†
- 76.8%2025-08-04
LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. † Self-reported scaffold plus model result. Treat it as a claim, not an independent measurement.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.