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
946 published updates
Running Codex safely at OpenAI
Title: Running Codex safely at OpenAI
Advancing voice intelligence with new models in the API
Title: Advancing voice intelligence with new models in the API
Simplex rethinks software development with Codex
Simplex is using ChatGPT Enterprise and Codex to validate AI-driven development and scale more productive workflows.
Scaling Trusted Access for Cyber with GPT-5.5 and GPT-5.5-Cyber
Title: Scaling Trusted Access for Cyber with GPT-5.5 and GPT-5.5-Cyber
Introducing Trusted Contact in ChatGPT
Connecting you to someone you trust when it matters most.
Parloa builds service agents customers want to talk to
Parloa uses OpenAI models to simulate, evaluate, and run voice-driven customer service systems for the enterprise.
Latest ChatGPT videos
533 published videos
YouTube
Rakuten x Codex: Recovery Time Reduced by 50%
We sat down with Yusuke Kaji, General Manager of AI for Business at Rakuten, to hear how Codex is empowering his engineers, reducing app vulnerabilities, and driving real impact across revenue streams. Check out the full video in our playli...
YouTube
Build Hour: API & Codex
Build agent-powered workflows for real engineering work with Codex and OpenAI APIs. In this Build Hour, you'll learn how teams are moving beyond pair programming to agentic delegation, where AI systems can take on entire engineering tasks f...
YouTube
The Codex app is now on Windows
The Codex app is now on Windows. Get the full Codex app experience on Windows with a native agent sandbox and support for Windows developer environments in PowerShell. https://developers.openai.com/wendows
YouTube
Interrupting and Adding Details in GPT-5.4 Thinking
In ChatGPT, GPT‑5.4 Thinking can now provide an upfront plan of its thinking, so you can adjust course mid-response while it’s working, and arrive at a final output that’s more closely aligned with what you need without additional turns.
YouTube
Computer Use & Frontend UI with GPT-5.4 Thinking
OpenAI researcher SQ Mah explains how GPT-5.4 Thinking brings even more powerful capabilities to Codex — with more persistent computer-use (CUA) capabilities that cut token usage by two-thirds in some cases, and stronger image understanding...
YouTube
Improving Web Search Results in GPT-5.3 Instant
OpenAI researcher Josh McGrath explains how GPT-5.3 Instant’s responses when using web search are more contextual, relevant, and stylistically natural.
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.
