Discussion

• @tszzl Roon on x

  there are early signs of 5.5 being a competent ai research partner. several researchers let 5.5 run variations of experiments overnight given only a high level algorithmic idea, wake up to find completed sweep dashboards and samples, never having touched code or a terminal at all

• @emollick Ethan Mollick on x

  I had early access to GPT-5.5. It is very good, especially the Pro version. Full writeup very shortly.

• @jonathanross321 Jonathan Ross on x

  I've had early access to this model, and it's 🤯 I've been going back and implementing ideas I had for LPU software over the years that we never had enough resources to do. I'm running out of old ideas and will need some new ones. 😀 Trained on @nvidia GB200 NVL72 for the win!

• @romainhuet Romain Huet on x

  Hello GPT-5.5! Our best model yet is here. It's smarter, faster, and gets more done. I had the chance to capture first reactions from developers building with it: it writes better code, understands more complex tasks, and keeps going. Can't wait to see what you build with it! [vi…

• @gdb Greg Brockman on x

  GPT-5.5 is a new class of intelligence. This intelligence makes it intuitive to use; it completes challenging tasks with little micromanagement. Also very token efficient, and runs with low latency and at scale. A real step toward a new way of getting computer work done.

• @openaidevs @openaidevs on x

  Auto-review is a new mode that lets Codex work longer with fewer approvals and safer execution. It helps Codex keep moving through tests, builds, and more, including during long tasks and automations, while a separate agent checks higher-risk steps in context before they run. [vi…

• @openaidevs @openaidevs on x

  Computer use just got better too. With GPT-5.5, Codex is stronger at using apps on your computer, from seeing what's on screen to clicking, typing, navigating, and moving context across tools. [video]

• @polynoamial Noam Brown on x

  I'm a manager at @OpenAI, but with GPT-5.5 I'm a more effective IC than I've ever been. I can now write CUDA kernels like a pro. I can rely on it to run my research experiments. And we know how to make it much more powerful from here. [image]

• @openaidevs @openaidevs on x

  Codex now generates higher-quality spreadsheets, slide decks, and documents with GPT-5.5 in @Microsoft Office and @googledrive . A new file viewer in the app makes it faster to review, revise, and iterate, so files are ready to share sooner. [video]

• @openaidevs @openaidevs on x

  With GPT-5.5, Codex now gets more of the job done across the browser, files, docs, and your computer. We've expanded browser use so Codex can interact with web apps, and test flows, click through pages, capture screenshots, and iterate on what it sees until it completes the [vide…

• @levie Aaron Levie on x

  GPT-5.5 is live. We've been testing the model over the last couple of weeks at Box on our most complex knowledge work evals, and the model saw a 10 percentage point jump on accuracy of these enterprise content tasks vs. GTP-5.4. We test the model on a variety of tasks that [image…

• @theo @theo on x

  GPT-5.5 (medium) is tied for SOTA on Artificial Analysis. GPT-5.5 (high) and GPT-5.5 (xhigh) are meaningfully ahead. xhigh is the first model to break the 50's [image]

• @deredleritt3r Prinz on x

  I was an early tester of GPT-5.5. More technical feedback is coming soon (prinzbench), but for now I will just say that: - GPT-5.5 Thinking (Heavy) delivers better answers in 2 minutes than GPT-5.4 Thinking (Heavy) delivered in 10 minutes - Similarly, GPT-5.5 Pro delivers

• @sama Sam Altman on x

  1. We believe in iterative deployment; although GPT-5.5 is already a smart model, we expect rapid improvements. Iterative deployment is a big part of our safety strategy; we believe the world will be best equipped to win at the team sport of AI resilience this way. 2. We believe

• @scaling01 @scaling01 on x

  GPT-5.5 is massively behind on SWE-Bench-Pro, but performs exceptionally well on TerminalBench 2.0 and CyberGym [image]

• @acerfur @acerfur on x

  I've been using 5.5 for a while. It is a noticeable increase in reasoning efficiency and knowledge, but for what I care about, I gotta wait for the next one. I don't consider 5.5 to be more than an incremental improvement, but good things come to those that wait.

• @agrimsingh Agrim Singh on x

  i had early access to gpt-5.5 in codex and have been running it across a variety of tasks across some nextjs projects, frontend design work and working alongside @convex besdies the usual ‘this is one-shotting features that 5.4 would previously struggle with’, the model uses [ima…

• @swyx @swyx on x

  looks like new Pareto frontiers across everything: - Context: 400K context in Codex and a 1M in API - API Pricing: $5/m input and $30/m output tokens. - Codex improved its own inference speed 20% lol - First generation co-designed with GB200 and GB300 NVL72 - 82.7% on [image]

• @firstadopter Tae Kim on x

  OpenAI Unveils GPT-5.5. Company Says Expect a Faster Model Release Pace 👀 OpenAI: “We see pretty significant improvements in the short term, extremely significant improvements in the medium term” “I would say the last few years have been surprisingly slow."" [image]

• @artificialanlys @artificialanlys on x

  GPT-5.5 takes OpenAI back to the clear number one in AI. OpenAI's new model tops the Artificial Analysis Intelligence Index by 3 points, breaking a three-way tie with Anthropic and Google OpenAI gave us pre-release access to test all five reasoning effort levels: xhigh, high, [im…

• @scaling01 @scaling01 on x

  GPT-5.5 was designed for and trained on Nvidia GB200/300 The model itself helped in the deployment and improvement of the inference stack [image]

• @thsottiaux Tibo on x

  Introducing GPT-5.5... together with a ton of new Codex features (more on those in the next hour). Included in all paid plans and coming to API soon. Update your Codex app or CLI to use it. https://openai.com/...

• @naderlikeladder Nader Khalil on x

  I've had access to Codex2 and GPT 5.5 for about 2 weeks now OpenAI just collison-installed all of NVIDIA lol They set up a lab like a Genius Bar so everyone could get set up w Codex 2 With the CLIs we've been building, non-technical coworkers seemed to have the biggest unlock [im…

• @baxate @baxate on x

  I have had early access to GPT 5.5 for over a week now. And have been cooking with @NaderLikeLadder and the Codex team at NVIDIA HQ on how to roll it out to all of our employees. As a developer, our lives change every couple months. Now, the same is happening for all knowledge

• @skirano Pietro Schirano on x

  GPT-5.5 is the highest leverage tool I have ever touched. For the first time, I don't feel limited by what a model can do. I feel limited only by what I can imagine. Training workflows. Impossible optimizations. Hardware experiments over USB. The vibe hardware era begins.

• @deryatr_ Derya Unutmaz on x

  I'd been part of OpenAI early tester group for GPT-5.5. I believe with GPT-5.5 Pro we reached another inflection point-comparable to the original release of o1-preview & then with 5.0 Pro, I had felt. It's that feeling of crossing a milestone threshold that pushes us to new era🔥

• @andonlabs @andonlabs on x

  We got early access to GPT-5.5. It's 3rd on Vending-Bench 2: better than GPT-5.4 but worse than Opus 4.7. However, it's on par with Opus 4.6 without any of the deception or power-seeking we saw from Opus 4.6 and Mythos. So bad behavior isn't necessary. Why is Claude doing it? [im…

• @openaidevs @openaidevs on x

  GPT-5.5 is here. It's our smartest frontier model yet, introducing a new class of intelligence for agentic coding, computer use, knowledge work, and scientific research. Rolling out in ChatGPT and Codex today. API is coming soon. [video]

• @petergostev Peter Gostev on x

  When using GPT-5.5, it is instantly noticeable how much more powerful it is. In Codex, I gave it a very complex prompt to create London Toy Railway with landmarks and seasons - it did an excellent job in one shot. In the second half of the video you see GPT-5.4 - it was also [vid…

• @scaling01 @scaling01 on x

  GPT-5.5 Pricing & GPT-5.5 Pro Pricing GPT-5.5: $5/$30 GPT-5.5-Pro: $30/$180 (Input/Output per million tokens)

• @timkellogg.me Tim Kellogg on bluesky

  GPT-5.5 (Spud)  —  Most intelligent model with a public release.  Available in ChatGPT & Codex.  API availability soon after more testing.  —  Better on benchmarks than Opus 4.7, however reports are that Opus gives better plans.  —  Notoriously, this model is fully-retrained  —  …

• r/accelerate r on reddit

  Introducing GPT-5.5

• r/OpenAI r on reddit

  Introducing GPT-5.5 |  OpenAI

• r/singularity r on reddit

  Introducing GPT-5.5

• @theo @theo on x

  $5 per mil in, $30 per mil out. GPT-5.5 is smart. I've been using it for a bit. It's also weird, hard to wrangle, and too expensive IMO. Double the price of GPT-5.4. 20% more expensive than Opus 4.7.

• @webuiltthiscity @webuiltthiscity on bluesky

  And so it begins.  [embedded post]

• @openai @openai on x

  GPT-5.5 delivers this step up in intelligence without compromising on speed. GPT-5.5 matches GPT-5.4 per-token latency in real-world serving, while performing better across nearly every evaluation we measured. It also uses significantly fewer tokens to complete the same Codex [im…

• r/OpenAI r on reddit

  OpenAI releases “Spud” GPT-5.5 model

• @benbajarin Ben Bajarin on x

  Holy is GPT 5.5 fast.

• @jasonhiner Jason Hiner on x

  Okay, @OpenAI's GPT-5.5 has landed. My quick take on the most important new features: + Most agentic model yet + Paves the way for the superapp + Better at long-horizon tasks + More intuitive problem-solving + Improved computer use ("economically valuable work" across 44

• @sama Sam Altman on x

  Really excellent work by the inference team to serve this model so efficiently! To a significant degree, we have to become an AI inference company now.

• r/OpenAI r on reddit

  GPT-5.5 is out 🔥

• r/ChatGPT r on reddit

  ChatGPT 5.5 is here!

• r/programare r on reddit

  Introducing GPT-5.5

• r/singularity r on reddit

  GPT-5.5 benchmark results have been released

• @alex @alex on x

  GPT-5.5 pushes Muse Spark further down the charts, and pushes xAI further into the hinterlands idk what happened to Google's Eo2025 momentum, but it appears that OpenAI and Anthropic are once again leading the AI world and everyone else is playing catch up

• Srinivas Narayanan Srinivas Narayanan on linkedin

  Introducing GPT-5.5 — a new class of intelligence for real work.  —  It's our smartest and most intuitive model yet: stronger at agentic coding …

• @reidhoffman Reid Hoffman on x

  Enter the 4000 (agent) hour work week. We won't have reliable takes on long-running tasks for a few days, but I'm excited to kick some off myself.

• Sameer Halepete Sameer Halepete on linkedin

  With today's release of GPT-5.5, we take co-design to a whole new level - this incredibly capable new model was co-designed for, trained with …

• Mac Huffman Mac Huffman on linkedin

  Today, OpenAI introduced GPT-5.5.  Our smartest and most intuitive model yet, built for real work across coding, research, data analysis, documents, spreadsheets, and complex multi-step workflows. …

• r/coding_agents r on reddit

  GPT 5.5 is a dud - just 58.6% on SWE-Bench Pro

• r/ClaudeAI r on reddit

  Reminder: Opus 4.6 is still the best at long context retrieval benchmark ( MRCR v2 )