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ChatGPT is a conversational AI assistant built by OpenAI, based on the GPT-4 family of large language models. It can answer questions, write code, draft text, analyze documents, and reason through complex problems.

• Multi-modal: text, images, files, and web browsing
• Code Interpreter for running Python and analyzing data
• Custom GPTs for specialized tasks
• Available via API (gpt-4o, gpt-4-turbo) and web/mobile apps

Used by developers for code assistance, writers for drafting, researchers for summarization, and businesses for customer-facing chatbots. Widely adopted in education and content creation.

Free tier (GPT-4o mini). ChatGPT Plus at $20/month (GPT-4o, DALL-E, browsing). Team and Enterprise plans available. API pricing per token.

Visit ChatGPT official website →