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Edward Grefenstette
@egrefen
FR/US/GB AI/ML Person, Director of Research at @GoogleDeepMind, Honorary Professor at @UCL_DARK, @ELLISforEurope Fellow. All posts are personal.
London, United Kingdom
egrefen.com
Joined April 2007
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    Edward Grefenstette
    @egrefen
    Dec 31, 2025
    🧵 Time for a short end-of-2025 wrap up 🧵 Genuinely aiming for this to be a short one for two reasons: 1. I'm doing it at the last moment 😅 2. Most of what I was involved in is not stuff that can be shared publicly (yet… or ever?). Or maybe I was just lazy... Let's go [1/12]
    79K
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    Edward Grefenstette
    @egrefen
    Apr 21, 2025
    Replying to @bill_ohall82976 and @realMaalouf
    Bro I've got some bad news for you about most of the New Testament...
    30K
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    Edward Grefenstette
    @egrefen
    Oct 23, 2025
    Hire clowns, get the circus.
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    Ahmad
    @TheAhmadOsman
    Oct 22, 2025
    > today this guy axes FAIR at Meta > so this is a quick recap of his origin story > and why he should not be the one > making that decision > Alexandr Wang, born January 1997 > age 19, drop out of MIT > co-found Scale AI > "what if we label data, but mid?" > convince every LLM
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    Edward Grefenstette
    @egrefen
    Nov 3, 2025
    I'm starting to believe that there's actually a secret law in SF requiring people to write circlejerk tweets like this.
    214K
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    Edward Grefenstette
    @egrefen
    Aug 28, 2024
    Replying to @devahaz
    I'm glad you feel your entirely subjective assessment about what's intuitive is somehow universal. I personally find Celsius a lot more intuitive, but I'm also not insecure so I don't go around telling people what to think.
    121K
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    Edward Grefenstette
    @egrefen
    Apr 21, 2025
    Replying to @bill_ohall82976 and @realMaalouf
    Cool story brah, but there's plenty of left-aligned content in the good book yo, check it: helping the needy (Matthew 25:35-40), critique of earthly wealth (Mark 10:25), non-violence (death penalty, anyone?) and diplomacy (Matthew 5:39), inclusivity (Luke 10:25-37).
    13K
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    Edward Grefenstette
    @egrefen
    Aug 17, 2024
    I can’t believe I still have to say this, but books are OBVIOUSLY capable of reasoning. You can literally watch them reason IN PLAIN ENGLISH (or whichever language they are written in) in front of your very own eyes….
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    AI Notkilleveryoneism Memes ⏸️
    @AISafetyMemes
    Aug 17, 2024
    I can't believe I still have to say this, but LLMs are OBVIOUSLY capable of reasoning. You can literally watch them reason IN PLAIN ENGLISH in front of your very own eyes. The cope around this is unreal.
    245K
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    Edward Grefenstette
    @egrefen
    Sep 5, 2023
    I will be posting (probably next week) some job listings for a new team I’m hiring into at @GoogleDeepMind. I’ll be looking for some research scientists and engineers with a strong engineering background to help build increasingly autonomous language agents. Watch this space.
    165K
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    Edward Grefenstette
    @egrefen
    Aug 26, 2025
    IMO the top people I know and who are likely to write the future of AI are: * not making 100M+ in panic-driven reorgs * not in in the GenAI/ASI org of a BigCo™️ * mostly L5-L6 * not active bloggers or super well-followed tweeters * pretty low-ego people
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    Edward Grefenstette
    @egrefen
    May 4, 2020
    Baguette-propagation.
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    Edward Grefenstette
    @egrefen
    Apr 1, 2021
    Sorry, @DeepMind, it looks like we got there first! Proud to announce that our Jointly Optimized Kernel Evaluator agent achieved AGI this morning around 20 mins past 4am GMT. The solution was delightfully simple and yet elegant. It won’t fit in this tweet so THREAD (1/70)
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    Edward Grefenstette
    @egrefen
    Oct 23, 2025
    wtf! Yuandong is one of the GOATs of not just FAIR, but Meta's entire AI push. Absolute madness.
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    Yuandong Tian
    @tydsh
    Oct 23, 2025
    Several of my team members + myself are impacted by this layoff today. Welcome to connect :)
    129K
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    Edward Grefenstette
    @egrefen
    Jan 7, 2019
    I'm happy to announce I've joined @facebookai (FAIR) as as research scientist, working out of the London office. Get in touch if you want to chat about internships, PhDs, working together, etc.
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    Edward Grefenstette
    @egrefen
    Sep 8, 2021
    I don’t want to brag, but I wrote (basically almost published) some homework when I was 5 that used multiplication (basically almost linear algebra), which was used in DL methods like LSTM, GANs, etc so you can thank me later for basically inspiring the most cited papers in ML.