ChatGPT is a conversational AI assistant powered by OpenAI's advanced language models. It provides natural language understanding and generation capabilities through web interface, mobile apps, and API access. Available in multiple pricing tiers from free to enterprise.

ChatGPT subscription plans include Free ($0), ChatGPT Plus ($20/month), ChatGPT Pro with two tiers ($100 and $200/month launched April 2026), ChatGPT Business ($25/user/month), and ChatGPT Edu for universities. The Pro tier provides 5x Plus quotas, 50 Deep Research sessions per month (Pro $100), and 20x Plus quotas with 250 Deep Research sessions, Sora video generation, and 1M context window (Pro $200). Free tier includes GPT-5.3 with 10 messages per 5-hour window. Business includes data analysis, Canvas, Projects, Tasks, custom workspace GPTs, and connectors to Google Drive, SharePoint, GitHub, Notion. OpenAI APIs are billed separately.
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