ChatGPT

ChatGPT is OpenAI's conversational AI assistant, built on the GPT model family, and the product that took generative AI mainstream in 2022. It handles open-ended chat, writing, summarization, code generation and debugging, image understanding, web browsing, and file analysis inside a single interface, with a large plugin/GPTs ecosystem for task-specific customization. The free tier covers everyday use; ChatGPT Plus, Pro, and Team/Enterprise plans add faster response times, higher usage limits, and more capable models. It remains the most widely used AI chatbot by user base and is often the default entry point for people trying generative AI for the first time.