Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Specifications
- Provider
- Anthropic
- Type
- Vendor / proprietary
- Modality
- text+image+file->text
- Context window
- 1M
- Knowledge cutoff
- 2025-01-31
- Released
- September 29, 2025
Capabilities
Input: textInput: imageInput: fileOutput: text
Strengths
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_p
