AI APIs & SDKs
Learn how to integrate AI models into your applications using the APIs from OpenAI, Anthropic, and Google
Understanding AI APIs
Learn what AI APIs are, how REST works, authentication with API keys, and the request/response format used by every major AI provider.
OpenAI API Deep Dive
Set up the OpenAI SDK, use the Chat Completions endpoint, explore GPT-4o and GPT-4o-mini, and learn function calling and structured output.
Anthropic Claude API
Set up the Anthropic SDK, use the Messages API with Claude Sonnet 4 and Claude Haiku, and learn system prompts and multi-turn conversations.
Google Gemini API
Set up the Google AI SDK, explore Gemini models, build basic text generation, use multimodal features with images, and compare with OpenAI and Claude.
Streaming and Chat Completions
Learn why streaming matters for UX, implement streaming with OpenAI and Anthropic, build a streaming chat UI, and understand server-sent events.
API Keys, Costs, and Rate Limits
Manage API keys securely, understand token-based pricing, handle rate limits, optimize costs, and monitor usage across AI providers.
AI APIs Cheat Sheet
Your complete quick reference — side-by-side API comparisons, code templates for every provider, pricing guide, model selection tips, and AI prompts.