> ## Documentation Index > Fetch the complete documentation index at: https://docs.apiyi.com/llms.txt > Use this file to discover all available pages before exploring further. # AI Model API Resource Navigation - OpenAI, Claude, Gemini Official Documentation Collection > Curated collection of official API documentation links for mainstream AI models including OpenAI, Claude, Gemini, Grok, DeepSeek, Qwen, providing one-stop AI API resource navigation for developers. This page collects official API documentation for mainstream AI models for quick developer access. ## APIYI Related Links Visit APIYI platform homepage and console View latest model pricing information Technical support and business inquiries ## Official API Documentation ### [OpenAI API Documentation](https://platform.openai.com/docs/api-reference) * GPT-4, GPT-3.5, DALL·E, Whisper and other models * Complete API reference documentation * Code examples and best practices ### [Claude API Documentation](https://docs.anthropic.com/en/api) * Anthropic Claude series models * Messages API and related features * Safety and responsible AI usage guidelines ### [Gemini API Documentation](https://ai.google.dev/gemini-api/docs) * Google Gemini series models * Multimodal AI capabilities * Firebase integration support ### [Grok API Documentation](https://docs.x.ai/docs/overview) * xAI Grok models (in public beta) * Real-time search integration * Native tool usage capabilities ### [DeepSeek API Documentation](https://api-docs.deepseek.com/) * DeepSeek series models * OpenAI API format compatible * Code generation and reasoning capabilities ### [Qwen API Documentation](https://www.alibabacloud.com/help/en/model-studio/use-qwen-by-calling-api) * Alibaba Cloud Tongyi Qianwen series * Multimodal and multilingual support * DashScope platform services *** All external links point to official documentation websites, ensuring you get the latest and most accurate information.