The OpenAI API provides programmatic access to GPT-4o, o1, DALL-E 3, Whisper, and other OpenAI models. Widely used for building AI-powered applications, it offers chat completions, function calling, fine-tuning, embeddings, and image generation. The API is the foundation of thousands of AI products including GitHub Copilot, Jasper, and many others.
| AI Models | GPT-4o, GPT-4o mini, o1, o1-mini, o3-mini, DALL-E 3, Whisper |
| Kontextfenster | Up to 128K tokens (GPT-4o) |
| Function Calling | Native function/tool calling |
| Pricing | Token-based (input and output tokens) |
| Rate Limits | Tier-based rate limits |