Is there a free gpt-oss API?

Yes. Groq gives 1,000 requests a day each for openai/gpt-oss-120b and openai/gpt-oss-20b with no credit card, and Cloudflare, Ollama Cloud, LLM7.io and NVIDIA have gpt-oss free too.

Where can I use gpt-oss-120b for free?

On Groq (openai/gpt-oss-120b), Cloudflare Workers AI (@cf/openai/gpt-oss-120b) and Ollama Cloud (gpt-oss:120b).

Is gpt-oss free on NVIDIA?

Yes, openai/gpt-oss-20b is in NVIDIA's free API catalog at build.nvidia.com, after phone verification.

What is the Groq base URL for gpt-oss?

https://api.groq.com/openai/v1 with a free Groq key and the model name openai/gpt-oss-120b.

How to Get a gpt-oss API Key for Free (6 Free Routes, 2026)

In short: gpt-oss-120b and gpt-oss-20b are OpenAI's open-weight models, so other services run them, several on free tiers. Groq gives 1,000 requests a day for each, with no credit card; Cloudflare Workers AI, Ollama Cloud, LLM7.io and NVIDIA have them free too.

OpenAI's gpt-oss: open weights

OpenAI publishes the gpt-oss weights, so any service can run the models. OpenAI's own API is paid and needs credits first: see how to get an OpenAI API key for free.

Where gpt-oss models are free

Where	gpt-oss model	Free allowance	What it needs
Groq	`openai/gpt-oss-120b`, `openai/gpt-oss-20b`	1,000 requests a day	A free account
Cloudflare Workers AI	`@cf/openai/gpt-oss-120b`, `@cf/openai/gpt-oss-20b`	Inside the 10,000 free Neurons a day	A free Cloudflare account
Ollama Cloud	`gpt-oss:120b`, `gpt-oss:20b`	A starter amount each month, shared	A free account
LLM7.io	`gpt-oss:20b`	100,000 tokens a day, shared with its other free models	A free account; keys expire on a date you set
OVHcloud AI Endpoints	`gpt-oss-120b`, `gpt-oss-20b`	2 requests a minute per model, per IP address	Nothing: no account and no API key
NVIDIA (build.nvidia.com)	`openai/gpt-oss-20b`	Up to 40 requests a minute, no daily limit stated	Phone verification, not offered in every country

gpt-oss answered on free Groq, Ollama and LLM7 keys in October 2026. The full list of free AI APIs, with each limit and source, is on how to get AI API keys for free.

Use a free gpt-oss model in an app made for OpenAI

In the app, enter the service's key, its base URL and its gpt-oss model name:

Service	Base URL	Model name
Groq	`https://api.groq.com/openai/v1`	`openai/gpt-oss-120b`
Cloudflare Workers AI	`https://api.cloudflare.com/client/v4/accounts/YOUR_ACCOUNT_ID/ai/v1`	`@cf/openai/gpt-oss-120b`
Ollama Cloud	`https://ollama.com/v1`	`gpt-oss:120b`
LLM7.io	`https://api.llm7.io/v1`	`gpt-oss:20b`
OVHcloud AI Endpoints	`https://oai.endpoints.kepler.ai.cloud.ovh.net/v1`	`gpt-oss-120b`
NVIDIA	`https://integrate.api.nvidia.com/v1`	`openai/gpt-oss-20b`

To put several free keys behind one address on your own computer, the open-source OmniRoute gateway switches to the next key when one runs out.

Words to know

API key: the password an app uses to call a model. See what is an API key.
gpt-oss: OpenAI's open-weight models: gpt-oss-120b and the smaller gpt-oss-20b.
Open-weight model: a model whose weights are published, so anyone can run it.
Base URL: the address an app sends its requests to.
Token: a piece of a word; the unit models read and write. See tokens and context windows.

How to Get a gpt-oss API Key for Free

OpenAI's gpt-oss: open weights

Where gpt-oss models are free

Use a free gpt-oss model in an app made for OpenAI

Words to know

Frequently asked questions

More free API key tutorials