> For the complete documentation index, see [llms.txt](https://1for-ai.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://1for-ai.gitbook.io/docs/readme.md).

# Welcome

**Welcome to the 1For AI API**

We're excited to have you on board!​

The 1For AI API offers a unified interface to access a curated selection of leading AI models from providers like OpenAI, Anthropic, Google, xAI, and Mistral. With our pay-as-you-go model, you can integrate advanced AI capabilities into your applications without the need for multiple subscriptions.​

**Key Features:**

* **Unified Access:** Interact with multiple AI models through a single API endpoint.​
* **Auto AI Selection:** Automatically selects the most suitable AI model based on your request.​
* **Usage-Based Billing:** Pay only for what you use, with transparent pricing.​
* **No Rate Limits:** Enjoy unrestricted access without imposed rate limits.​
* **Privacy and Security:** Maintain control over your data with secure interactions.​
* **Free Trial:** Start exploring with a free trial—no payment or credit card required.​

To get started, check out our [Quickstart Guide](https://1for-ai.gitbook.io/docs/getting-started/quickstart) and explore the [API Documentation](https://1for-ai.gitbook.io/docs).​

If you have any questions or need assistance, feel free to reach out to our support team.​

Happy building!