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Quick start

First request in 3 minutes.

OpenAI compatible

Use the official OpenAI SDK. Just swap the base_url.

Dozens of models

OpenAI, Anthropic Claude, Google Gemini, xAI Grok, DeepSeek and more.

Support

support@fortapi.com — questions about anything.
Base URL: https://www.fortapi.com/v1 (OpenAI protocol). With the Anthropic SDK, use the bare domain https://www.fortapi.com (no /v1). Auth via Authorization: Bearer sk-....

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What is FortAPI

FortAPI is a single API gateway to the world’s leading AI models. One API key, one OpenAI-compatible SDK, one FortAPI balance — and you get access to dozens of models from different providers without opening accounts at each of them.

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Who is it for

  • Teams that need multiple models in one project — separate accounts at each vendor become a chore.
  • Researchers who want to quickly compare Claude / GPT / Gemini answers on the same prompt.

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How it works

1

API key

In the Tokens section, generate an API key (starts with sk-...) and copy it.
2

First request

Set base_url=https://www.fortapi.com/v1 in your OpenAI SDK and call any supported model.

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Help

Got questions? Email support@fortapi.com — we typically reply within one business day.