@jeffdean.bsky.social - Jeff Dean

09 Jan 2026 21:40 +0000

The recent days have been horrific. We can't become numb to repeated instances of illegal and unconstitutional action by government agencies. It's even worse when public officials are blatantly lying in ways that contradict dozens of pieces of video evidence. [contains quote post or other embedded content]

07 Jan 2026 21:12 +0000

Please welcome Google's Open Source efforts to Blue Sky at @opensource.google!

06 Jan 2026 19:52 +0000

My first @waymo.bsky.social ride on the highway! Very smooth. Awesome work, Waymo team!

06 Jan 2026 16:04 +0000

In 2024, I was a co-author on "Shaping AI's Impact on Billions of Lives", covering areas we thought AI would have significant impact on the world. A shortened version appears as the cover article in this month's CACM: https://cacm.acm.org/research/shaping-ais-impact-on-billions-of-lives/ arxiv.org/abs/2412.02730 See: shapingai.com

19 Dec 2025 22:25 +0000

My colleague Sanjay Ghemawat & I have done a fair bit of performance tuning of various pieces of code. We wrote an internal Performance Hints document ~2 years ago as a way of identifying some general principles & we've recently published a version of it externally. Doc: http://abseil.io/fast/hints.html

17 Dec 2025 17:38 +0000

We’ve pushed out the Pareto frontier of efficiency vs. intelligence again. With Gemini 3 Flash ⚡️, we are seeing reasoning capabilities previously reserved for our largest models. This opens up entirely new categories of near real-time applications that require complex thought. More in thread ⬇️

19 Nov 2025 02:53 +0000

I’m really excited about our release of Gemini 3 today, the result of hard work by many, many people in the Gemini team and all across Google! 🎊 https://blog.google/products/gemini/gemini-3/ Gemini 3 performs quite well on a wide range of benchmarks.

06 Nov 2025 15:43 +0000

DataRater can continuously+adaptively learn which examples will improve an ML model the most during training. Delighted to have worked on this with @luisazintgraf.bsky.social, @dancalian.bsky.social, @gregfar.bsky.social, Iurii Kemaev, et al. (see full list at the of Luisa's thread). [contains quote post or other embedded content]

29 Aug 2025 01:14 +0000

Honored to be named in TimeAI 100 list, along w/my awesome Google colleagues Josh Woodward & Hartmut Neven & many awesome people. My recognition is due to collaboration with many great colleagues, so thank you to everyone I've been fortunate to work with over many years! 🙏 https://time.com/collections/time100-ai-2025/7305831/jeffrey-dean/

27 Aug 2025 01:10 +0000

Our latest Gemini image generation and editing model is quite good. It lets you indulge in a bit of creative fun, helps you make new business cards, etc! Try it out at gemini.google.com Blog: https://blog.google/products/gemini/updated-image-editing-model/?utm_source=x&utm_medium=&utm_campaign=&utm_content=

21 Aug 2025 13:39 +0000

AI efficiency is important. The median Gemini Apps text prompt in May 2025 used 0.24 Wh of energy (<9 seconds of TV watching) & 0.26 mL (~5 drops) of water. Over 12 months, we reduced the energy footprint of a median text prompt 33x, while improving quality: https://cloud.google.com/blog/products/infrastructure/measuring-the-environmental-impact-of-ai-inference

28 Jun 2025 05:33 +0000

Thanks for sharing your journey, @moji249.bsky.social! As I said on Twitter, it's really important for people to see that grad school has its ups and downs and that there are real times of struggle. Congratulations on the graduation! 🎉 [contains quote post or other embedded content]

10 Jun 2025 15:35 +0000

If you're ever in Athens, I highly recommend the Museum of Ancient Greek Technology! https://maps.app.goo.gl/sngwM98ueKkrooVy5 Early humanoid robots to pour water+wine, demonstrations of heat+steam+water weight to "magically" open 500 kg temple doors, armor, ... (cont)

06 May 2025 15:07 +0000

Today we’re sharing an early look at our latest Gemini model update for I/O! Introducing the updated Gemini 2.5 Pro (I/O edition), which ranks #1 on WebDev Arena and surpasses our previous 2.5 Pro model by +147 Elo points. 🏆 https://blog.google/products/gemini/gemini-2-5-pro-updates

23 Apr 2025 09:51 +0000

If you want to know more about how Google Flights works & the complexity of airline constraints & combinatorial combinations, I highly recommend this set of slides by Carl de Marcken (co-founder of ITA software, which underpins of Google Flights). http://www.demarcken.org/carl/papers/ITA-software-travel-complexity/ITA-software-travel-complexity.pdf

20 Apr 2025 22:35 +0000

My wife was cleaning out some drawers and found some childhood art of now-adult @vdean.bsky.social of the two of us with my longtime colleague Sanjay.

25 Mar 2025 17:25 +0000

🥁Introducing Gemini 2.5, our most intelligent model with impressive capabilities in advanced reasoning and coding. Now integrating thinking capabilities, 2.5 Pro Experimental is our most performant Gemini model yet. It’s #1 on the LM Arena leaderboard. 🥇

20 Mar 2025 21:02 +0000

Want to check out the source for the "AlexNet" paper? Google has made the code from Krizhevsky, Sutskever and Hinton's seminal "ImageNet Classification with Deep Convolutional Neural Networks" paper open source, in partnership with the Computer History Museum. https://computerhistory.org/press-releases/chm-makes-alexnet-source-code-available-to-the-public/