[Bug] OpenAI Assistant 'Output Randomness' not being set

Questions
1

Bug Found

I was setting up a new workflow and noticed that Assistants I created through the OpenAI node’s “Create an Assistant” operation were not having their Temperature and Top P (optional options) being set correctly.

It seems no matter what I set the values to, the result is an Assistant created with both values set to 1.

example
example1920×1033 81.3 KB

(I am able to correctly set those values with a later OpenAI node set to “Update an Assistant” operation.)

I suppose this could be a bug on OpenAI’s side, not n8n’s, or perhaps the n8n node is not sending the values correctly?

I was noticed it with OpenAI’s “GPT-4.1-NANO” model, but have not tested it with other models (there are just so many now).

Example workflow to reproduce:

Information on my n8n setup

  • n8n version: 1.89.2
  • Database (default: SQLite): ? (haven’t set anything, so probably default)
  • n8n EXECUTIONS_PROCESS setting (default: own, main): default
  • Running n8n via (Docker, npm, n8n cloud, desktop app): Self-hosted via Docker desktop
  • Operating system: macOS 13.7.4
2

Hello.

Do you need any help?

Thanks

3

No, I’m simply reporting a bug I noticed. Since there is not a dedicated Bugs category, I saw that the description for the Questions category says it’s for “troubleshooting issues, understanding nodes, or reporting bugs”

4

Thank you. You were very kind to share. Have a great day.