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watsonx Orchestrate Developer Edition includes Langflow 1.7.1 by default. You can author flows in other Langflow versions as long as you include the correct LFX (Langflow Runner) version in the requirements.txt file before importing the flow into watsonx Orchestrate. Use this table to identify the correct LFX version for your Langflow flow:
Langflow versionLFX versionNotes
1.5.0.post20.1.8Initial GA release
> 1.5.0.post2 and < 1.7.1-LFX version can be requested on demand; upgrade recommended
1.7.10.2.1Current ADK‑supported version
1.8.01.8.0 – 1.8.2Compatible minor versions
1.8.11.8.3Verified pairing
1.8.30.3.3Verified pairing
Note:Flows created with Langflow versions earlier than 1.7.0 may fail or behave unpredictably because these versions do not include integrated LFX support. To ensure compatibility:
  1. Open the flow in the latest Langflow version. Use version 1.7.1 or later.
  2. Update deprecated or incompatible components.
  3. Export the flow again.
Add the correct LFX version to requirements.txt before importing the flow into watsonx Orchestrate.