What it is
ChatGPT is OpenAI's conversational AI assistant, first launched in November 2022. It became the fastest consumer application in history to reach 100 million users and remains the benchmark that every new AI chatbot is measured against. With roughly 60% market share among general-purpose AI chatbots as of early 2026, it is the default starting point for most people exploring AI for the first time — and a daily workhorse for millions of professionals.
Key features
ChatGPT's main strength is breadth. It handles a wider range of tasks within a single interface than any competitor: long-form writing, code generation and debugging, web research with cited sources, image generation, advanced data analysis, and real-time voice conversation. Its instruction-following is notably precise — it executes specific formatting requests, length constraints, and structural requirements more reliably than most alternatives. A persistent memory system allows it to learn user preferences, tone, and context across sessions, improving output quality over time. An extensive library of custom GPTs and third-party integrations extends its capabilities into specialised workflows.
Use cases
ChatGPT is positioned as a general-purpose assistant for individuals and businesses across virtually every domain. Common use cases include drafting and editing written content, answering research questions, working through complex problems step by step, generating and iterating on code, producing images from text prompts, and automating repetitive knowledge work. It performs consistently across all of these rather than excelling at one. For teams, it serves as the lowest-friction AI entry point — familiar, well-documented, and integrated into existing tools via API and plugins. For individuals, it is the tool most likely to be useful regardless of background or technical level.
Limitations
ChatGPT is no longer the top performer in any single category. Independent testing consistently shows Claude ahead on coding accuracy and document analysis, and Gemini ahead on multimodal tasks. Some long-term power users note that recent model iterations feel less surprising or creative than earlier versions. The free tier, while functional, has usage caps that become frustrating for heavy daily use.
