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---¶
title: Migration guides¶
url: https://platform.claude.com/docs/en/about-claude/models/migration-guide¶
description: Guides for migrating to the latest Claude models from previous Claude versions¶
---¶
¶
* [Migrating to Claude Fable 5.1 and Claude Mythos 5.1](https://platform.claude.com/docs/en/models/fable-5-1/migration-guide)¶
* [Migrating to Claude Mythos 5 and Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/migration-guide)¶
* [Migrating to Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/migration-guide)¶
* [Migrating to Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/migration-guide)¶
* [Migrating to Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/migration-guide)¶
¶
## Get help¶
¶
* Check the [API documentation](https://platform.claude.com/docs/en/api/overview) for detailed specifications¶
* Review [model capabilities](https://platform.claude.com/docs/en/models/overview) for performance comparisons¶
* Review [API release notes](https://platform.claude.com/docs/en/release-notes/api) for API updates¶
* Contact support if you encounter any issues during migration¶
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* [Migrating to Claude Fable 5.1 and Claude Mythos 5.1](https://platform.claude.com/docs/en/models/fable-5-1/migration-guide)
* [Migrating to Claude Mythos 5 and Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/migration-guide)
-* [Migrating to Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/migration-guide)
+* [Migrating to Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/migration-guide)
* [Migrating to Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/migration-guide)
* [Migrating to Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/migration-guide)