What this page answers
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...
- Anthropic · anthropic/claude-sonnet-4.5
- text+image+file->text · global model route
- 1,000,000 context · $3 input
Before connecting
Do not stop at the model name. Before integration, verify base URL, protocol, visible models, parameters, and limits together.
- supports include_reasoning
- supports max_tokens
- supports reasoning
- supports response_format
- supports stop
Next action
The goal is to catch search demand, then move users into model profiles, provider profiles, and key checking.
- Check whether the model fits the use case
- Then verify key permission and callable models
