Claude Sonnet 4.5
Anthropic · USA
Pricing & capacity
- Input price
- $3.00 / 1M tokens
- Output price
- $15.00 / 1M tokens
- Context window
- 200K
Capabilities
- Vision
- Yes
- Reasoning
- Yes
- Tool calls
- Yes
- Cursor
- Yes
- OpenRouter
- Yes
Coding benchmarks
- LiveCodeBench
- 59.0%
- Aider Polyglot
- —
- SWE-bench Verified
- 82.0%
- BFCL (Tool use)
- 60.67%
- Code Arena Elo
- 1386
Notes
SWE-bench #1 (Vellum Nov 2025). Strong agentic coder. Sep 2025.