Claude Sonnet 4.5
Key: claude-sonnet-4-5
Provider: Anthropic
Support: runnable
Capabilities
chat · reasoning · tools
Specifications
| Field | Value |
|---|---|
| Context window | 200 000 tokens |
| Input modalities | text |
| Output modalities | text |
When to use
Previous Sonnet generation. Fully supported and suitable for existing lenses pinned to this version. For new lenses, prefer claude-sonnet-4-6.