I built my n8n project on Koyeb, and got a message: “Problem in node ‘AI Agent’” after using it normally for a while. I’m not using n8n Cloud directly, so the AI Agent shouldn’t require payment. How can I resolve this issue?
Rate limit exceeded: free-models-per-day. Add 10 credits to unlock 1000 free model requests per day
Ehy @Luke_Lin,
The error you show here, however, speaks very clearly: you have exceeded the limit of daily credits.
If you want to be sure, try to run it the next day, if it works it means that you had saturated the credits.
Hey @Luke_Lin ,
I think this is because you’ve reached n8n’s free daily usage limit for AI features like the AI Agent node. The limit is set by n8n’s AI proxy and is not related to OpenAI or your own API keys.
If you’re open to paying, you can purchase credits from n8n to increase the AI Agent usage limit—10 credits will give you 1,000 additional requests per day.
Gallo_AIA 、 Msquare_Automation Thank you very much first. I initially thought that the cloud version of n8n requires payment after the trial period, but that self-hosted n8n can be used for free. So, even if we host the n8n platform ourselves, are there still limitations on the usage of certain nodes?
I believe this is incorrect!
As far as I know, this error:
Sure, this problem is solved. It worked after I applied a new key from another account on OpenRouter. I had mistakenly thought the problem was due to the AI Agent node limitation.
