One API for many AI models
Gisoo is an independent AI platform with one API key and one prepaid USD balance for 675 models from 73 providers, including chat, image, video, music and voice. The API is compatible with the OpenAI API and with the Anthropic Messages API, so existing code and tools work after a change of base URL.
Start with the quickstart Browse models
Quickstart
Create a key, add credit and send your first request in a few minutes.
Models and prices
The live list of models by provider, with context windows and USD prices.
Capabilities
Chat, tools, structured outputs, embeddings, images, speech, music, video and realtime.
SDKs and tools
OpenAI SDK, Anthropic SDK, Claude Code, LangChain, LiteLLM, n8n, Cursor.
Pricing and billing
Prepaid USD credit, no subscription, and exactly what is and is not billed.
Your first call
curl https://gisoo.pro/api/v1/chat/completions \
-H "Authorization: Bearer $GISOO_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "gpt-4o-mini", "messages": [{"role": "user", "content": "Hello"}]}'What to know
- Independent platform. Gisoo is not OpenAI, Anthropic or Google and is not an official reseller of their products. We route your requests to the providers whose models you choose.
- Pay as you go. No subscription. Credit is held in US dollars and a request is settled at its real cost. Top-ups are currently paid with an Iranian bank card; NetArz (netarz.ir) is the seller and issues the receipt.
- Privacy. Prompts and responses are not stored; only billing metadata is kept.
- Language. Gisoo's apps and most reference pages are in Persian. These English pages cover the API, models and billing.
More
The OpenAPI specification and llms.txt are public. For the Persian site, go to گیسو.