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Jason Wei
1,250 posts
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Jason Wei
@_jasonwei
ai researcher @meta superintelligence labs, past: openai, google 🧠
sf
instagram.com/sfkoala2/
Joined October 2020
707
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108.9K
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  • Pinned
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    Jason Wei
    @_jasonwei
    Jul 16, 2025
    Becoming an RL diehard in the past year and thinking about RL for most of my waking hours inadvertently taught me an important lesson about how to live my own life. One of the big concepts in RL is that you always want to be “on-policy”: instead of mimicking other people’s
    355K
  • user avatar
    Jason Wei
    @_jasonwei
    May 2, 2025
    The longest chain-of-thought / reasoning trace I have witnessed was almost twenty minutes long and involved crazy backtracking, constraint verification, and tool use. But in the end, my girlfriend decided to just go with the first outfit that she tried on
    309K
  • user avatar
    Jason Wei
    @_jasonwei
    Dec 13, 2024
    Yall heard it from the man himself
    2.8M
  • user avatar
    Jason Wei
    @_jasonwei
    Feb 20, 2024
    My typical day as a Member of Technical Staff at OpenAI: [9:00am] Wake up [9:30am] Commute to Mission SF via Waymo. Grab avocado toast from Tartine [9:45 am] Recite OpenAI charter. Pray to optimization Gods. Learn the Bitter Lesson [10:00am] Meetings (Google Meet). Discuss how to
    908K
  • user avatar
    Jason Wei
    @_jasonwei
    Feb 14, 2023
    Personal update: after two years at @Google Brain, I joined the #ChatGPT team at @OpenAI! Excited to continue working on large language models and can't wait to see the impact of AI on society 🤖🌎🪄
    528K
  • user avatar
    Jason Wei
    @_jasonwei
    Sep 12, 2024
    Super excited to finally share what I have been working on at OpenAI! o1 is a model that thinks before giving the final answer. In my own words, here are the biggest updates to the field of AI (see the blog post for more details): 1. Don’t do chain of thought purely via
    user avatar
    OpenAI
    @OpenAI
    Sep 12, 2024
    We're releasing a preview of OpenAI o1—a new series of AI models designed to spend more time thinking before they respond. These models can reason through complex tasks and solve harder problems than previous models in science, coding, and math. openai.com/index/introduc…
    527K
  • user avatar
    Jason Wei
    @_jasonwei
    May 5, 2023
    Turns out the ancient Chinese knew a lot about modern neural networks
    318K
  • user avatar
    Jason Wei
    @_jasonwei
    Feb 13, 2024
    An incredible skill that I have witnessed, especially at OpenAI, is the ability to make “yolo runs” work. The traditional advice in academic research is, “change one thing at a time.” This approach forces you to understand the effect of each component in your model, and
    535K
  • user avatar
    Jason Wei
    @_jasonwei
    Aug 12, 2024
    Inspiring words from a young OpenAI engineer: “Why have I done well so far? I don’t think I’m smarter or more experienced than other people. But my competitive advantage is that I am willing to sit down and fully debug and completely understand code. I am willing to stay up late
    377K
  • user avatar
    Jason Wei
    @_jasonwei
    Jan 25, 2023
    Yesterday I gave a lecture at @Stanford's CS25 class on Transformers! The lecture was on how “emergent abilities” are unlocked by scaling up language models. Emergence is one of the most exciting phenomena in large LMs… Slides:
    docs.google.com
    Stanford CS25 Emergence Lecture (Jason Wei)
    Scaling unlocks emergent abilities in language models Jason Wei Google Brain
    360K
  • user avatar
    Jason Wei
    @_jasonwei
    Sep 7, 2023
    One thing that I started doing at OpenAI is that I created a policy for myself to be *100% transparent* with my manager about everything. It seems obvious and weird to say aloud, but I bet most people don’t actually do this. But once I started doing it, I realized there are a lot
    602K
  • user avatar
    Jason Wei
    @_jasonwei
    Dec 21, 2024
    Biggest unsolved problem in artificial intelligence is what to do in the 3-5 minutes when o3 is thinking
    188K
  • user avatar
    Jason Wei
    @_jasonwei
    Mar 1, 2023
    Best AI skillset in 2018: PhD + long publication record in a specific area Best AI skillset in 2023: strong engineering abilities + adapting quickly to new directions without sunk cost fallacy Correct me if this is over-generalized, but this is what it seems like to me lately
    348K
  • user avatar
    Jason Wei
    @_jasonwei
    Nov 18, 2023
    From @sama I learned a lot about clear thinking and challenging conventional beliefs. @gdb inspires me to work harder and be a good person. When I first joined, I was working at the office at 10pm on a friday. He was working next to me and made me feel welcome. So sad 😢
    391K

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