
Conversational AI assistant for writing, coding, research, and general Q&A.
ChatGPT is OpenAI's conversational AI assistant, built on the GPT model family. It handles everyday chat, document analysis, image generation, voice conversations, and — on paid tiers — autonomous "Agent" and Deep Research modes that complete multi-step tasks and web research on their own.
- Free tier includes unlimited everyday text chat
- Plus ($20/mo) adds Agent mode, Deep Research, image/voice tools and custom GPTs
- Two Pro tiers ($100 and $200/mo) multiply usage limits 5x and 20x for heavy daily use
- Codex Mobile (coding assistant) is free on every plan, including Free
- Business and Enterprise plans exclude your data from model training by default