# ChatGPT ChatGPT is [[OpenAI]]'s consumer [[AI Assistants|AI assistant]], first released in November 2022. It is built on top of the GPT family of [[Large Language Models (LLMs)]], with the paid tier running on [[GPT4]] and newer models. It became the fastest-growing consumer application in history, reaching 100 million users within two months of launch. ChatGPT is the most widely used AI assistant, serving as many people's first interaction with modern AI. Beyond basic chat, it supports web browsing, code execution, image generation, file analysis, and custom GPTs. The free tier uses lighter models; ChatGPT Plus and Team plans unlock frontier model access and higher usage limits. Its mainstream success forced every major tech company to ship competing products and fundamentally shifted public awareness of AI capabilities. ## The product is the surface, not the model OpenAI has been steadily collapsing its product surface area into ChatGPT. [[DALL-E]] is no longer a separate product; image generation now runs through [[ChatGPT Images 2.0]] directly inside the assistant. [[Sora]] was discontinued in March 2026 and folded in the same way for video. The pattern is clear; the model is no longer the product. The assistant is the product, and modalities are tools the assistant decides to call. For builders, that means treating ChatGPT as a runtime that orchestrates capabilities, not as a chat front-end over a single LLM. ## References - Official site: https://chatgpt.com - Image generation upgrade (ChatGPT Images 2.0): https://openai.com/index/introducing-chatgpt-images-2-0/ ## Related - [[OpenAI]] - [[GPT4]] - [[ChatGPT Images 2.0]] - [[DALL-E]] - [[Sora]] - [[AI Assistants]] - [[Large Language Models (LLMs)]]