Models & pricingGuides
Migration guides
Guides for migrating to the latest Claude models from previous Claude versions
- Claude Fable 5.1 and Claude Mythos 5.1 migration guide
- Claude Opus 5.5 migration guide
- Claude Sonnet 5.5 migration guide
- Claude Haiku 5.5 migration guide
Get help
- Check the API documentation for detailed specifications
- Review model capabilities for performance comparisons
- Review API release notes for API updates
- Contact support if you encounter any issues during migration
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