ChatGPT revolutionized human-AI interaction when it launched in November 2022. Built by OpenAI, the model interprets human prompts, reasons contextually, and generates coherent, creative, and useful outputs in seconds. It’s based on large language models (LLMs) — first GPT-3.5, then GPT-4, and now GPT-5, which powers ChatGPT Plus and Enterprise tiers in 2025.

Unlike typical chatbots, ChatGPT understands nuance and adapts its responses to user intent. It can draft articles, translate documents, summarize research, generate code, write marketing copy, and simulate expert dialogue across virtually any field.

In 2025, ChatGPT supports real-time internet browsing, image generation via DALL-E 3, document uploads, file analysis, voice conversation, and personalized memory. Businesses and educators use it to automate workflows, while individuals use it for creativity, learning, and personal productivity.