You can now choose between “Auto”, “Fast”, and “Thinking” for GPT-5. Most users will want Auto, but the additional control will be useful for some people.
Rate limits are now 3,000 messages/week with GPT-5 Thinking, and then extra capacity on GPT-5 Thinking mini after that limit. Context limit for GPT-5 Thinking is 196k tokens. We may have to update rate limits over time depending on usage.
4o is back in the model picker for all paid users by default. If we ever do deprecate it, we will give plenty of notice. Paid users also now have a “Show additional models” toggle in ChatGPT web settings which will add models like o3, 4.1, and GPT-5 Thinking mini. 4.5 is only available to Pro users—it costs a lot of GPUs.
We are working on an update to GPT-5’s personality which should feel warmer than the current personality but not as annoying (to most users) as GPT-4o. However, one learning for us from the past few days is we really just need to get to a world with more per-user customization of model personality.
• • •
Missing some Tweet in this thread? You can try to
force a refresh
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!
it can go use the internet, do complex research and reasoning, and give you back a report.
it is really good, and can do tasks that would take hours/days and cost hundreds of dollars.
people will post lots of great examples, but here is a fun one:
i am in japan right now and looking for an old NSX. i spent hours searching unsuccessfully for the perfect one. i was about to give up and deep research just...found it.
it is very compute-intensive and slow, but it's the first ai system that can do such a wide variety of complex, valuable tasks.
going live in our pro tier now, with 100 queries per month.
plus, team, and enterprise will come soon, and then free tier.
here is o1, a series of our most capable and aligned models yet:
o1 is still flawed, still limited, and it still seems more impressive on first use than it does after you spend more time with it. openai.com/index/learning…
but also, it is the beginning of a new paradigm: AI that can do general-purpose complex reasoning.
o1-preview and o1-mini are available today (ramping over some number of hours) in ChatGPT for plus and team users and our API for tier 5 users.
screenshot of eval results in the tweet above and more in the blog post, but worth especially noting:
a fine-tuned version of o1 scored at the 49th percentile in the IOI under competition conditions! and got gold with 10k submissions per problem.
it is still flawed, still limited, and it still seems more impressive on first use than it does after you spend more time with it.
it is more creative than previous models, it hallucinates significantly less, and it is less biased. it can pass a bar exam and score a 5 on several AP exams. there is a version with a 32k token context.
we are previewing visual input for GPT-4; we will need some time to mitigate the safety challenges.