ChatGPT
OpenAI
OpenAI started in 2015 as a nonprofit research lab dedicated to ensuring artificial general intelligence benefits all of humanity. Read more →
Latest ChatGPT updates
1,036 published updates
The Instruction Hierarchy: Training LLMs to Prioritize Privileged Instructions
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Introducing OpenAI Japan
We are excited to announce our first office in Asia and we’re releasing a GPT‑4 custom model optimized for the Japanese language.
Klarna's AI assistant does the work of 700 full-time agents
Title: Klarna's AI assistant does the work of 700 full-time agents
Introducing improvements to the fine-tuning API and expanding our custom models program
We’re adding new features to help developers have more control over fine-tuning and announcing new ways to build custom models with OpenAI.
Customizing models for legal professionals
Title: Customizing models for legal professionals
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We’re making it easier for people to experience the benefits of AI without needing to sign up.
Latest ChatGPT videos
628 published videos
YouTube
Codex for Solutions Engineers: Making AI Tangible for Customers
"As a solutions engineer, my job is to make customers believe our technology can take them where they want to go. Codex helps me turn raw, messy context - customer emails, industry signals, product information, and even Trustpilot reviews -...
YouTube
Setup with ChatGPT
YouTube
Grow With ChatGPT
YouTube
Advent Accelerates Deals with ChatGPT + Codex
ChatGPT + Codex are a one-two punch for investment firms. "Having the ability to connect your deal folder with all of the context, and then be able to ask ChatGPT and Codex real time questions has been really impactful to our workflows,"...
YouTube
Builders Unscripted: Ep. 4 - Pietro Schirano
Pietro Schirano, Founder & CEO of MagicPath sits down with Romain Huet to talk about pushing the creative edges of GPT-5.5 and using Codex to turn ideas into software. 03:45 Images into sound 07:57 Multi-agent Codex workflows 14:34 Revivin...
YouTube
Verso, l'entreprise qui ne dort jamais
Découvrez comment Verso développe une entreprise véritablement AI-native. Lors de cette session enregistrée lors de l'événement OpenAI France en juin 2026, Lydia Bellahouel, cofondatrice et CEO de Verso, partage la manière dont son équipe s...
OpenAI started in 2015 as a nonprofit research lab dedicated to ensuring artificial general intelligence benefits all of humanity. In November 2022, ChatGPT changed the public's perception of AI overnight — reaching one million users in five days and accelerating the entire industry by years. Today, OpenAI operates across consumer products, enterprise tools, and a developer API that powers thousands of applications worldwide, making it the most recognized name in modern AI.
Timeline
Founded as a nonprofit AI research lab in San Francisco.
GPT-1 released; first transformer-based language model.
GPT-3 launched, opening the API to developers.
ChatGPT released — reaches 1 million users in 5 days.
GPT-4 released; plugins and multimodal capabilities added.
GPT-4o and o1 reasoning models launched; Sora video model unveiled.
o3 and o4-mini released; GPT-4.5 and GPT-5 roadmap confirmed.