One unified AI API for every frontier model

Stop juggling API keys, SDKs and invoices for every AI provider. G0I unifies 470+ models behind a single OpenAI-compatible endpoint.

A unified AI API means one integration instead of many. With G0I you authenticate once, call one endpoint, and reach every major model — then switch between them by changing a single field.

What "unified" gives you

Three steps to integrate

1 · Create an accountSign up at g0i.ai and grab an API key in seconds — no card required to start.
2 · Change one linePoint your existing OpenAI SDK at https://g0i.ai/v1. Same request shape, same response shape.
3 · Call any modelSwap the model field to use GPT, Claude, Gemini, Llama, DeepSeek and 470+ others — one key, one bill.

Call any model the same way

curl https://g0i.ai/v1/chat/completions \
  -H "Authorization: Bearer $G0I_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-5.4","messages":[{"role":"user","content":"Hello"}]}'

Explore the full catalog and developer docs.

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Frequently asked questions

What is a unified AI API?
A single API that routes to many AI models from different providers, so you integrate once instead of separately for each provider.

How many models does G0I support?
Over 470 models across chat, image and video generation — all reachable from one endpoint with one key.

Is there one bill for all models?
Yes. Usage across every model is consolidated into a single account and a single bill.

Related: OpenAI API alternative Claude API Unified AI API AI gateway LLM API