Featured on
Foundation models · San Francisco, United States
ChatGPT is the product that took generative AI from a research demo to something hundreds of millions of people use weekly, and OpenAI's release cadence has set the industry's pace for most of the years since.
OpenAI was founded in San Francisco in December 2015 as a non-profit AI research lab, restructured in 2019 around a capped-profit subsidiary to raise the capital frontier AI research requires, and now operates through the OpenAI Foundation and OpenAI Group PBC. It builds the GPT family of large language models, the ChatGPT consumer product built on them, and a developer API that a large share of the generative-AI application layer is built on top of.
Its releases have repeatedly set the pace for the rest of the industry: GPT-3 in 2020 demonstrated large-scale few-shot learning, GPT-4 in 2023 brought multimodal reasoning to a mass consumer product, and Sora brought that same trajectory to video generation. ChatGPT, launched in November 2022, remains the reference point most people mean when they say "AI chatbot".
ChatGPT
Consumer and enterprise conversational assistant built on the GPT model family.
chatgpt.com (opens in a new tab)GPT API
Developer API for the GPT model family, the base layer much of the generative-AI application ecosystem is built on.
platform.openai.com (opens in a new tab)Sora
Text-to-video generation model and app.
sora.chatgpt.com (opens in a new tab)Codex
AI coding agent and API for software development tasks.
Elon Musk's foundation-model lab, maker of the Grok models, which merged into SpaceX in early 2026 as "SpaceXAI".
AI safety-focused lab behind the Claude model family, founded by former OpenAI researchers.
Alphabet's unified AI research and product lab, formed from the 2023 merger of DeepMind and Google Brain, and the maker of the Gemini model family.
