OpenAI
Core Products & Tools
- ChatGPT
- Prompt Optimizer
- OpenAI Playground
- GPT Store
- Create a GPT Requires at least Plus account
- Atlas Browser with ChatGPT built in
Documentation & Guides
- OpenAI Models
- OpenAI Prompt Engineering Docs
- OpenAI Reasoning Models Docs
- OpenAI Cookbook
- OpenAI Prompt Guidance
- OpenAI Function calling
- OpenAI API Reference
- OpenAI Guide to building agents
- OpenAI Model Spec Approach to shaping desired model behavior.
- GPT-5 prompting tips
Development & Testing
- OpenAI Evals
-
Agent Builder Visual canvas for building multi-step agent workflows
- Build for ChatGPT Build apps and experiences for ChatGPT users
- OpenAI Apps SDK Apps sdk