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---
## Summary by cubic
Adds support for Anthropic Claude Opus 4.5 and standardizes Sonnet
naming. Removes legacy 3.x Anthropic models and updates tests to use the
new names.
- **New Features**
- Added "Claude Opus 4.5" with 32k max output and 200k context.
- **Migration**
- Names standardized to "Claude Sonnet 4" and "Claude Sonnet 4.5".
Update any model selections and tests.
- Removed Anthropic 3.x models: Claude 3.7 Sonnet, Claude 3.5 Sonnet,
Claude 3.5 Haiku, and their Bedrock variants.
<sup>Written for commit fb0aff0bf5e21e1b57bc8744ed9643b863b888d4.
Summary will update automatically on new commits.</sup>
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