Create the credential
- In n8n, create a new OpenAI credential.
- Paste your gpuos key as the API key.
- Set Base URL to
https://gpuos.si/v1. - Use the credential in the OpenAI Chat Model node of an AI Agent or Basic LLM Chain, and type the model id, for example
qwen3-32b.
Give n8n its own gpuos key with a monthly token quota, so a runaway workflow cannot use up your GPUs.
Official documentation: n8n.io