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On This Page

  • Python SDK
  • JS/TS SDK
CoreObservabilitySDKsUpgrade PathOverview

Upgrade paths

This page shows the migration guides to the latest versions of the Langfuse SDKs. Pick your SDK to follow the relevant migration steps.

Python SDK

  • Python SDK v3 → v4 — Latest
  • Python SDK v2 → v3

JS/TS SDK

  • JS/TS SDK v4 → v5 — Latest
  • JS/TS SDK v3 → v4
Troubleshooting & FAQPython v3 → v4
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