Sean Metzger @seanl_lm
mts @openai Joined October 2023-
Tweets32
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Followers19
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Following45
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Likes638
1/n I’m really excited to share that our @OpenAI reasoning system got a perfect score of 12/12 during the 2025 ICPC World Finals, the premier collegiate programming competition where top university teams from around the world solve complex algorithmic problems. This would have…
gpt-5 is the best coding model in the world and is now the default in @cursor_ai. youtube.com/watch?v=PQUcIb…
The wait is over! As the leading AI code review tool, CodeRabbit was given early access to OpenAI's GPT-5 model to evaluate the LLM's ability to reason through and find errors in complex codebases! Our evals found GPT-5 performed up to 190% better than other leading models!
I’ve been using gpt-5 for a bit now. This model broke me. It is so good. I didn’t know what the price was. I assumed it would be o3-pro priced because it is that smart. Nope. Truly insane. Videos coming very soon.
These models are amazing!
gpt-oss is out! we made an open model that performs at the level of o4-mini and runs on a high-end laptop (WTF!!) (and a smaller one that runs on a phone). super proud of the team; big triumph of technology.
We achieved gold medal level performance on this year's IMO! Our model thinks and writes proofs in clear, plain‑English - no formal code required. Unlike the narrower systems used in past competitions, our model is built to reason broadly, far beyond contest problems.
We achieved gold medal level performance on this year's IMO! Our model thinks and writes proofs in clear, plain‑English - no formal code required. Unlike the narrower systems used in past competitions, our model is built to reason broadly, far beyond contest problems.
1/N I’m excited to share that our latest @OpenAI experimental reasoning LLM has achieved a longstanding grand challenge in AI: gold medal-level performance on the world’s most prestigious math competition—the International Math Olympiad (IMO).
My happy place
Converting old childhood photos to Studio Ghibli and sending to my parents :)
Great day to be a Plus user.
GPT-4.5 is singularly leading on the Style Control leaderboard, showing its strength in both style and substance.
GPT-4.5 topped all categories across the board, with a clear leadership in Multi-Turn. 🥇 Multi-Turn 💠 Hard Prompts 💠 Coding 💠 Math 💠 Creative Writing 💠 Instruction Following 💠 Longer Query
I had early access to GPT-4.5. I found it to be by far the highest verbal intelligence model I've ever used. It's an outstanding writer and conversationalist, and excels at what I call "concretizing vibes": things like recommending a particular list of movies or songs for a very…
Last week, @OpenAI asked me if I'd like to alpha test GPT 4.5 Honored to be chosen, I'm going to share some visual comparisons to their older models below.
Just an FYI: I was an early tester of GPT-4.5. Whatever the benchmarks say *do not* tell the whole story. Big model smell is there…
i've been testing gpt 4.5 for the past few weeks. it's the first model that can actually write. this is literally the midjourney-moment for writing. (comparison to gpt 4o below)
welcome, gpt-4.5 i've spent a lot of time playing with this model recently, and it's left me feeling the agi some thoughts
Yoram Bachrach @yorambac
3K Followers 7K Following Research Scientist at Meta (prev Google DeepMind and Microsoft Research). Working on LLM Agents and Multi-Agent Systems.
SunrayPetal @imune13341746
228 Followers 1K Following Walking through life with a heart full of dreams and a pocket full of sunshine. 🌞 One kind word at a time.
Yu Bai @yubai01
6K Followers 2K Following Research @OpenAI. Trained models for GPT5 Thinking / Mini; Contributor to gpt-oss, o3-mini, o1. Previously @SFResearch, PhD @Stanford.
Rohan Pandey @khoomeik
39K Followers 2K Following descending cross-entropy to ascend entropy || prev research @OpenAI @CarnegieMellon '23
Derek Cedarbaum @DerekCedarbaum
243 Followers 2K Following Product @ Red 6, #2 FTE | Built the world's first in-air augmented reality system for fighter pilots |
will depue @willdepue
51K Followers 2K Following (taking time off) RL posttraining @openai, past: sora, applied research
Jessie R. Liu @jessierliu
277 Followers 248 Following Postdoc @ChangLabUcsf. Prev. @UCBerkeley @UCSF @PittBioE. she/her
wickedalien @wickedalien1
307 Followers 192 Following Independent Researcher. AI Developer, I post about @xAI, and @openAI Signal @ wickedalien1
Aidan Clark @_aidan_clark_
13K Followers 253 Following Qualitative Mathematics @OpenAI Ex: @DeepMind Hae sententiae verbaque mihi soli sunt
Brandon McKinzie @mckbrando
7K Followers 2K Following research @OpenAI | prev: multimodal @Apple, physics/cs @UCBerkeley
Kaylo Littlejohn @KayloLittlejohn
606 Followers 357 Following Senior machine learning engineer @Roblox. Prev: co-lead brain-to-voice/avatar @Berkeley_AI (PhD), @ChangLabUcsf, @MetaAI. BS @Columbia
Norman Mu @TheNormanMu
2K Followers 822 Following
Jeffrey Wang @jeffreygwang
5K Followers 1K Following Researcher @OpenAI, working on pretraining & reasoning. Previously (and perhaps again) CS/Math/English @Harvard.
Jeremy Bernstein @jxbz
7K Followers 614 Following 🧪 @thinkymachines ✍️ anon feedback @ https://t.co/RIhBhjMRdD
Nicholas Perry @ntperry13
998 Followers 344 Following Scientist, Hsu Lab UCB-UCSF Bioengineering PhD @arcinstitute Genome design and bridge recombinases
Frank Willett @WillettNeuro
2K Followers 114 Following Assistant Professor at Stanford. We study brain-computer interfaces and human neuroscience.
Tarun Amasa @TarunAmasa
7K Followers 2K Following Thiel Fellow | CEO of Endex: AI For Excel @endexai
Yu Bai @yubai01
6K Followers 2K Following Research @OpenAI. Trained models for GPT5 Thinking / Mini; Contributor to gpt-oss, o3-mini, o1. Previously @SFResearch, PhD @Stanford.
Mark Chen @markchen90
65K Followers 341 Following Chief Research Officer at @OpenAI. Coach for the USA IOI Team.
Sebastien Bubeck @SebastienBubeck
58K Followers 1K Following I work on AI at OpenAI. Former VP AI and Distinguished Scientist at Microsoft.
will depue @willdepue
51K Followers 2K Following (taking time off) RL posttraining @openai, past: sora, applied research
Noam Brown @polynoamial
92K Followers 856 Following Researching reasoning @OpenAI | Co-created Libratus/Pluribus superhuman poker AIs, CICERO Diplomacy AI, and OpenAI o3 / o1 / 🍓 reasoning models
ChangLabUCSF @ChangLabUcsf
3K Followers 6 Following Chang Lab at UCSF, human brain, speech, brain-computer-interfaces, neurosurgery
Jessie R. Liu @jessierliu
277 Followers 248 Following Postdoc @ChangLabUcsf. Prev. @UCBerkeley @UCSF @PittBioE. she/her
Aidan Clark @_aidan_clark_
13K Followers 253 Following Qualitative Mathematics @OpenAI Ex: @DeepMind Hae sententiae verbaque mihi soli sunt
Kaylo Littlejohn @KayloLittlejohn
606 Followers 357 Following Senior machine learning engineer @Roblox. Prev: co-lead brain-to-voice/avatar @Berkeley_AI (PhD), @ChangLabUcsf, @MetaAI. BS @Columbia
Norman Mu @TheNormanMu
2K Followers 822 Following
Brandon McKinzie @mckbrando
7K Followers 2K Following research @OpenAI | prev: multimodal @Apple, physics/cs @UCBerkeley
Jürgen Schmidhuber @SchmidhuberAI
165K Followers 0 Following Invented principles of meta-learning (1987), GANs (1990), Transformers (1991), very deep learning (1991), etc. Our AI is used many billions of times every day.
Stefano Ermon @StefanoErmon
20K Followers 374 Following AI Prof @Stanford | CEO & Cofounder @InceptionAILabs | Co-inventor of DDIM, FlashAttention, DPO, GAIL, and score-based/diffusion models
Russell Kaplan @russelljkaplan
20K Followers 703 Following President @cognition. Past: director of engineering @Scale_AI, startup founder, ML scientist @Tesla Autopilot, researcher @StanfordSVL.
Google DeepMind @GoogleDeepMind
1.2M Followers 279 Following We’re a team of scientists, engineers, ethicists and more, committed to solving intelligence, to advance science and benefit humanity.
Jerry Tworek @MillionInt
23K Followers 700 Following Berry farmer @ OpenAI | o3, o1, GPT4, ChatGPT, Codex, Solved Rubik’s cube with robotic hand | cautious AI optimist
Dan Hendrycks @DanHendrycks
42K Followers 111 Following • Center for AI Safety Director • xAI and Scale AI advisor • GELU/MMLU/MATH/HLE • PhD in AI • Analyzing AI models, companies, policies, and geopolitics
Gary Marcus @GaryMarcus
194K Followers 7K Following “In the aftermath of GPT-5’s launch … the views of critics like Marcus seem increasingly moderate.” —@newyorker
Tengyu Ma @tengyuma
37K Followers 564 Following Assistant professor at Stanford; Co-founder of Voyage AI (https://t.co/wpIITHLgF0) ; Working on ML, DL, RL, LLMs, and their theory.
Patrick Hsu @pdhsu
47K Followers 3K Following @ArcInstitute co-founder, @BerkeleyBioE professor, @ThriveCapital investor | 🇨🇦 prev @harvard @broadinstitute, Fast Grants
John Hallman @johnohallman
7K Followers 326 Following Pretraining @OpenAI, sometimes RL/bio/health too
Hongyu Ren @ren_hongyu
23K Followers 691 Following research @meta superintelligence. CS PhD @stanford. prev @openai, led the development of o3-mini and o1-mini.
Shengjia Zhao @shengjia_zhao
52K Followers 231 Following Chief Scientist @ Meta MSL. Formerly MTS @ OpenAI, PhD @ Stanford. I train models. All opinions my own.
Kevin Lu @_kevinlu
9K Followers 220 Following @thinkymachines. formerly: - @openai: RL, synthetic data, efficient models - @berkeley_ai: decision transformer, universal computation
Jeffrey Wang @jeffreygwang
5K Followers 1K Following Researcher @OpenAI, working on pretraining & reasoning. Previously (and perhaps again) CS/Math/English @Harvard.
Charlie Snell @sea_snell
8K Followers 6K Following PhD student @berkeley_ai; research @cursor_ai; prev @GoogleDeepMind. My friend told me to tweet more. I stare at my computer a lot and make things
Patrick Broe @LanterneRougeYT
30K Followers 361 Following Founder of Lanterne Rouge. Head of Strategy @vismaleaseabike 📩 [email protected]
Rylan Schaeffer @RylanSchaeffer
6K Followers 2K Following CS PhD Student at Stanford Trustworthy AI Research with @sanmikoyejo. Prev interned/worked @ Meta, Google, MIT, Harvard, Uber, UCL, UC Davis
Tri Dao @tri_dao
33K Followers 632 Following Asst. Prof @PrincetonCS, Chief Scientist @togethercompute. Machine learning & systems.
Yann LeCun @ylecun
955K Followers 765 Following Professor at NYU. Chief AI Scientist at Meta. Researcher in AI, Machine Learning, Robotics, etc. ACM Turing Award Laureate.
Science News @ScienceNews
5.3M Followers 519 Following Covering the latest news in all fields of science. Publisher @society4science. See also @SN_Explores.Trends for United States
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