> ## Documentation Index
> Fetch the complete documentation index at: https://arize-ax.mintlify.site/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Migrate

> Guides for migrating historical traces, datasets, and prompts from Phoenix, Braintrust, Langfuse, and LangSmith into Arize AX.

Hands-on guides for moving to Arize AX from another observability platform: importing historical traces, datasets, and prompts, then continuing to trace in AX.

> **[Migrate from Phoenix](/docs/ax/cookbooks/migrate/migrate-from-phoenix)**
>
> Move historical Phoenix data and new application traces into Arize AX.

> **[Migrate from Braintrust](/docs/ax/cookbooks/migrate/migrate-from-braintrust)**
>
> Import historical Braintrust logs into Arize AX with a coding-agent skill, then continue tracing in AX.

> **[Migrate from Langfuse](/docs/ax/cookbooks/migrate/migrate-from-langfuse)**
>
> Import historical Langfuse observations into Arize AX with a coding-agent skill, then continue tracing in AX.

> **[Migrate from LangSmith](/docs/ax/cookbooks/migrate/migrate-from-langsmith)**
>
> Import historical LangSmith runs into Arize AX with a coding-agent skill, then continue tracing in AX.