you can use it to access openai models.
here is one example of using free credits:
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I have used it to chat with ai agent. Answer from moosa on community.n8n.io
Reddit
reddit.com › r/n8n › how can i benefit from the free api credits from openai?
r/n8n on Reddit: How can I benefit from the free API credits from OpenAI?
April 21, 2025 -
Hey guys - I know that there was (sometime ago) the possibility of getting your hands on some free credits for OpenAI api. I want to start working with n8n and I'm quite strapped for cash now.
I haven't seen any kind of new offers on the OpenAI chat and I was wondering if the promos are off the table or are available in some dark corner of the internet?
Thanks!
EDIT: Thank you all for your great inputs!
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If you're trying to explore AI + n8n without spending much (or anything), here's what actually works right now: OpenAI still provides free tokens if you enable "share data for training" in your settings. Just make sure your account has a positive balance — even a small one — or the tokens won’t apply. OpenRouter has a bunch of models you can use without an API key. You can send HTTP requests directly from n8n. Models like LLaMA, DeepSeek, MythoMax, and others are available for free. Gemini API from Google gives free access to Gemini Flash (2.5). You can use it with an API key via Google AI Studio — generous daily limits and solid speed. Hugging Face offers some free inference credits if you're on a Pro plan. Not huge, but good enough for testing out flows. With this stack, you can already build working automations and demos without needing any paid API plans.
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Openrouter has a lot of free models you can try out.
Does OpenAI give free 100$ Free Usage Limit?
Is it true? If so, why I don’t see it at my billing pages? More on community.openai.com
n8n error: "The service is receiving too many requests from you / You exceeded your current quota" even with available OpenAI credits
I also have a valid credit card added to my OpenAI account. ... Tried gpt-4o-mini, gpt-4, and gpt-3.5-turbo — same error every time. ... Copied my org-xxxxx and added it to the Organization ID field in the OpenAI credentials in n8n. More on github.com
How to Get $2500 in OpenAI Credits
Today I just found out that I can get $2500 in OpenAI Credits, but I don’t know the application URL. I Googled and found: https://openai.com/microsoft-for-startups, but the page shows a 404 error. More on community.openai.com
How to handle OpenAI's API rate limits in n8n? - Getting Started with n8n - n8n Community
Hi, OpenAI’s API has rate limits. In the case of chat completions on the free trial, the api rate limits currently are: Requests per minute: 3 requests per minute. Tokens per minute: 40,000 tokens per minute. You’ll get the amount of tokens you consumed in each api response (see image below). More on community.n8n.io
Videos
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How to Create FREE OpenAI API Key & Connect with n8n + Use Gemini ...
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Run OpenAI's Open Source Model FREE in n8n (Complete Setup Guide) ...
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What to Do When Your Free OpenAI API Credits Provided by n8n Run ...
02:11
Easily Connect OpenAI to n8n: Here's How - YouTube
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How to Use OpenAI’s Open-Source Models For FREE in n8n - ...
07:51
How To Use AI Models For FREE In n8n (Tutorial) - YouTube
n8n
docs.n8n.io › integrations › builtin › credentials › openai
OpenAI credentials | n8n Docs
Documentation for OpenAI credentials. Use these credentials to authenticate OpenAI in n8n, a workflow automation platform.
n8n
docs.n8n.io › integrations › builtin › app-nodes › n8n-nodes-langchain.openai › common-issues
OpenAI node common issues | n8n Docs
If you find yourself frequently running out of account credits, consider turning on auto recharge in your OpenAI billing settings to automatically reload your account with credits when your balance reaches $0. This error displays when the request results in an error but n8n wasn't able to interpret ...
GitHub
github.com › n8n-io › n8n › issues › 19356
n8n error: "The service is receiving too many requests from you / You exceeded your current quota" even with available OpenAI credits · Issue #19356 · n8n-io/n8n
September 10, 2025 - n8n error: "The service is receiving too many requests from you / You exceeded your current quota" even with available OpenAI credits#19356
Published Sep 10, 2025
GitHub
github.com › n8n-io › n8n › issues › 15853
Can't access OpenAI models in "Message a model" node. · Issue #15853 · n8n-io/n8n
May 30, 2025 - Bug Description I was in the process of create a "message a model" node on N8N, I had all my inputs in correctly and wanted to the test the step but I didn't have enough credits on my OpenAI accoun...
Published May 30, 2025
n8n
community.n8n.io › questions
A question about open AI subscription - Questions - n8n Community
September 13, 2024 - I’m looking to integrate an AI agent into my n8n workflow. I’m considering using OpenAI’s GPT-3.5 Turbo and 4o. Which subscription is more suitable for this use case: the API key subscription or the OpenAI Plus subscri…
SerpApi
serpapi.com › blog › how-to-build-an-ai-agent-with-n8n-and-live-google-search-data
How to Build an AI Agent with n8n and Live Google Search Data
March 3, 2025 - Unfortunately, OpenAI no longer gives away free credit on signup. As a new user, you'll be able to run a few API calls for free to start, but this won't get you very far. I recommend adding the minimum $5 of credit to your account.