going to try live-tweeting the GPT-5 livestream. first, GPT-5 in an integrated model, meaning no more model switcher and it decides when it needs to think harder or not. it is very smart, intuitive, and fast. it is available to everyone, including the free tier, w/reasoning!

evals aren't the most important thing--the most important thing is how useful we think the model will be--but it does well on evals. for example, a new high on SWE-bench and many other metrics. it is by far our most reliable and factual model ever.

rolling out today for free, plus, pro, and team users. next week to enterprise and edu. making this available in the free tier is a big deal to us; PhD-level intelligence for everyone! plus users get much higher rate limits. pro users get GPT-5 pro; really smart!

GPT-5 is much better at writing! for example, here is GPT-4o writing a eulogy for our previous models (which we are sunsetting) vs GPT-5.

GPT-5 is good at writing software. here it is making a web app to to learn french, with feature requests including a snake-like game with a mouse and cheese and french words. (you can probably come up with better variations of snake--please give it a try and share!) "voila"

personalization! a little fun one: you can now customize the color of your chats research preview of personalities: choose different ones that match the style you like. memory getting better. connect other services like gmail and google calendar for better responses.

GPT-5 much better at health queries, which is one of the biggest categories of ChatGPT usage. hopeful that it will provide real service to people. grateful that carolina and felipe joined to share their story. ❤️

these models are really good at coding! 3 new models in the API: GPT-5 GPT-5 mini GPT-5 nano new 'minimal' reasoning mode, custom tools, changes to structured outputs, tool call preambles, verbosity parameter, and more coming.

not just good at software, good at agentic tasks across the board. also great at long context performance

GPT-5 can do very complex software engineering tasks in practice, well beyond vibe coding

now, @mntruell joining to talk about cursor's experience with GPT-5. notes that GPT-5 is incredibly smart but does not compromise on ease of use for pair programming. demos fixing an issue; suggests trying too use it for your real work.

@mntruell GPT-5 is the best technology for businesses to build on. more than 5 million businesses are using openai; GPT-5 will be a step-change for them. amgen, BBVA, oscar, the US federal government, and many more partners are using GPT-5 to do things they couldn't before.

@mntruell good new on pricing!

ok now the most important part: "we are about understanding this miraculous technology called deep learning." "this is a work of passion." "i want to to recognize and deeply thank the team at openai" "early glimpses of technology that will go much further." "we'll get back to scaling." - @merettm it is amazing to work with such a brilliant and driven group of people and discover the future together, and to provide such utility to people along the way.