Problem in node This model is not supported in 2.2 version of the Agent node. Please upgrade the Agent node to the latest version

Questions
1

Issue

On the sub-agent node I get this error:

Problem in node
This model is not supported in 2.2 version of the Agent node. Please upgrade the Agent node to the latest version.

Setup

  • I have a workflow where the main Agent node uses the latest Agent node version (v3.x).

  • That node calls OpenAI using the 1.3 API, which works fine.

  • The main Agent then delegates to a sub-agent node that is still on Agent node v2.2.

so the main issue is that

  1. Agent node v3 → supports OpenAI 1.3
  2. Agent node v2.2 → does not support OpenAI 1.3

Workaround I used

  • Exported/downloaded the workflow file.

  • In the JSON, changed the OpenAI model version for the sub-agent node from 1.3 → 1.2 (a version supported by Agent node 2.2).

  • Re-imported the workflow.

  • After that, the sub-agent executed correctly.

Questions

  • Is this the expected behavior when mixing different Agent node versions in one workflow?

  • Is there a recommended way in the UI to handle this mismatch without manually editing the JSON?

  • I assume the long-term fix is to upgrade all Agent nodes in the workflow to the same latest version—just confirming that this is the intended approach.

1 Like
2

@Kavya_duggirala
I am facing right now the exact same situation :frowning:

The only way i could fix it, was like you´ve said to change the OpenAI Chat Model Version to Version 1.2 in the JSON.

Thanks for that btw. :heart:

But i wish n8n would update the Agent Tool nodes so wen can use OpenAI 1.3.

Thank you so far :innocent:

3

yeah I hope this issue gets fixed as soon as possible.
Happy that this work around can do a dirty fix till then.
grateful that the information was useful.