Discussion

• @openai @openai on x

  GPT-5.5 Instant is starting to roll out in ChatGPT. It's a big upgrade, giving you smarter, clearer, and more personalized answers in a warmer, more natural tone. And it's also more concise, which we heard you wanted. We think you'll love chatting with it. [video]

• @michpokrass Michelle Pokrass on x

  we shipped gpt-5.5 instant today to chat; it's rolling out over the next couple days to everyone. for this model, we focused on factuality, crushing hacks, and improving the baseline intelligence. 5.5 is a pretty big step forward on all three. it is much smarter, significantly

• @sam_badawi Sam Badawi on x

  OpenAI has made GPT-5.5 Instant the default ChatGPT model, significantly reducing hallucinations and improving accuracy across complex reasoning tasks.  The update also brings more natural responses and deeper personalization, signaling continued progress toward reliable, everyda…

• @masterwang34 Mole on x

  GPT 5.5 instant: 30% less yap :) [image]

• @mark_k Mark Kretschmann on x

  GPT-5.5 Instant is currently rolling out in @ChatGPTapp .  I'd still recommend using Thinking mode instead, but it's an improvement over GPT-5.3 Instant which we were stuck with until now.  Especially good for Free tier users, who don't have other options!

• @enginron @enginron on x

  GPT-5.5 Instant really said STEM? I got this. GPQA (PhD Science): 78.5% - 85.6% AIME 2025 (Comp Math): 65.4% - 81.2% Math + science upgrades are getting too real. We're cooked (in a good way) [image]

• @deryatr_ Derya Unutmaz on x

  Rolling out GPT-5.5 Instant will have a bigger impact on the world than most will appreciate. Close to a billion people use the free tier of ChatGPT, and Instant is the main model for them. GPT-5.5 will be a huge upgrade in intelligence from the current 5.3 for everyday chats.

• @teksedge David Hendrickson on x

  🚨 New @OpenAI GPT Model Alert: GPT-5.5 Instant is rolling out in ChatGPT. Key upgrades ⚡ Smarter + clearer responses 🗣️ Warmer, more natural tone ✂️ Much more concise (finally!) ✅ Stronger factuality in medicine, law & finance 🧠 Better memory & personalization 💰 API [video]

• @anushabalak Anusha Bala on x

  incredible feeling to be part of a huge launch like this! 5.5 feels like a big step up in intelligence and is just so much more pleasant to talk to. and the improved personalization is a joy - now ChatGPT knows me even better (try connecting your Gmail!)

• @jp54362 @jp54362 on x

  GPT-5.5 Instant clearly performs better than GPT-5.3 Instant in both science and math tests. In PhD-level science, it improves from 78.5% to 85.6%, which shows stronger understanding of complex topics. In competition math, it jumps from 65.4% to 81.2%. [image]

• @alexeheath Alex Heath on x

  OAI continuing to flex its compute advantage

• @mikelecheve Mikel on x

  GPT-5.5 Instant isn't just an upgrade... it's a reliability jump ⚡ Better facts Stronger reasoning More trust in high-stakes domains Medicine. Law. Finance. + real gains in vision & STEM tasks This is what “production-ready AI” starts to look like Are we finally there? [image]

• @sama Sam Altman on x

  in particular, the combination of improvements to speed, intelligence, personality, and great memory/personalization feels like a more-than-sum-of-the-parts thing when it all hits together

• @openai @openai on x

  We're also improving memory and personalization. ChatGPT can now better use context from saved memories, past chats, files, and connected Gmail accounts to give more personalized responses. Memory sources show what relevant context was used to personalize a response and allow [vi…

• @conor_d_dart Conor Dart on x

  Great to see Gpt 5.5 coming out. I'd still use thinking but could very well be a great model for instant replies

• @sama Sam Altman on x

  the new instant model in chatgpt is so good damn if you have been thinking-model-only for awhile, give it a try!

• @openai @openai on x

  GPT-5.5 Instant is more dependable, with significant improvements in factuality, especially in domains where accuracy matters most, like medicine, law, and finance. It's also stronger across everyday tasks, from analyzing image uploads to answering STEM questions to knowing when …

• @davidcrespo @davidcrespo on bluesky

  gpt-5.5 instant seems directly aimed at improving that horrible chatgpt style for free users.  I'm always interested in this even though I don't use it because people's idea of what LLMs can do and how they talk mostly comes from free chatgpt  —  openai.com/index/gpt-5-...  [imag…

• r/accelerate r on reddit

  GPT-5.5 Instant: smarter, clearer, and more personalized

• r/OpenAI r on reddit

  GPT-5.5 Instant: Smarter, Clearer, and More Personalized

• @ericmitchellai Eric on x

  Excited that we're updating the default model in ChatGPT today! 5.5 instant is a substantial improvement in intelligence, image perception, and factuality. It also updates the writing style to be a bit plainer and more straightforward. What was on your wishlist?

• @openai @openai on x

  GPT-5.5 Instant is rolling out over the next two days as the default model to all ChatGPT users, and as ‘gpt-5.5-chat-latest’ in the API. Personalization improvements are rolling out to Plus and Pro users on the web, and soon on mobile. Memory sources are rolling out across all

• @lexnlin Leon Lin on x

  im sorry to be this evil but i dont want the free subs people to get so crazy shit yet 😭

• @dieaud91 Diego Aud on x

  My hunch: if 5.5 Instant shares the same base model as 5.5 Thinking and is being rolled out broadly, then one or more things must be true: - it's not an insanely large model (1-3T?) - the Instant path is heavily optimized/routed/constrained - OpenAI has a lot more inference

• @kimmonismus @kimmonismus on x

  Nice, big update: OpenAI is rolling out GPT-5.5 Instant in ChatGPT as the new default model (very good jumps in benchmark) The upgrade makes ChatGPT smarter, more factual, more dependable, and better at everyday tasks like image analysis, STEM questions, writing, and [image]

• @chatgpt21 Chris on x

  Holy shit GPT 5.5 instant 1. Doesn't yap 2. Talks like a human 3. Brings relevant things into the convo (I was having air conditioner troubles this week) I'm getting one shotted. Great release [image]

• @gdb Greg Brockman on x

  Major ChatGPT upgrade rolling out now, in the form of GPT-5.5 Instant: