AI Agent Node with GPT 5 Not Working

Questions
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1

Describe the problem/error/question

When creating an AI Agent node and using GPT 5 as the chat model, it times out and provides no response. I verified my organization and I do in fact have credits.

What is the error message (if any)?

No error message

Please share your workflow

Not relevant, just a single node for AI Agent

Share the output returned by the last node

Information on your n8n setup

  • n8n version: 1.107.3
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app): cloud
  • Operating system: osx
2

Hi there may i know if you are using the openrouter node or the openAI node

Because if you are using the openrouter, ive read some reports that there are limitations to using gpt 5 there, so if you do, maybe its better to use the official openAI node

also, since gpt 5 is a bit new, have you make sure to update your n8n to the latest version? If not then i would suggest you to do that

Hope it answers your question!

3

I’m not using the openrouter node. I’ve tried to paste my workflow in here, but I get an error.

The only model that works is GPT 4.1. All others time out. I’m stumped..

4

I’ve run the exact same prompt directly to the openAI API in python code and I get a response back in 68 seconds. When Running it in the AI Agent node, it just times out.

5

Get the same, latest n8n, self hosted with Open AI directly to an AI Agent node - adding tools makes it always time out - not even simple tools with very little data!

6

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