ChatGPT is OpenAI’s flagship conversational AI assistant, built on the GPT-4o and GPT-4 Turbo large language models. Since its launch in November 2022, it has become the most widely used AI tool in the world, serving hundreds of millions of users across education, business, coding, writing, and creative work. ChatGPT can answer questions, write essays, debug code, translate languages, summarize documents, and engage in nuanced multi-turn conversations.
The free tier runs on GPT-4o mini and provides solid everyday performance. The Plus plan ($20/month) unlocks GPT-4o with higher usage limits, DALL-E image generation, Advanced Data Analysis (Code Interpreter), web browsing, custom GPTs, and file uploads. Team and Enterprise plans add workspace collaboration, admin controls, and enhanced security for organizations.
ChatGPT is available on the web, iOS, Android, and as a desktop app for Mac and Windows. Developers can also integrate its capabilities via the OpenAI API. With features like memory, custom instructions, voice mode, and a growing plugin ecosystem, ChatGPT remains the benchmark against which all other AI assistants are measured.
