Jeff Dean
jeffdean.bsky.social
Jeff Dean
@jeffdean.bsky.social
Google Chief Scientist, Gemini Lead. Opinions stated here are my own, not those of Google. Gemini, TensorFlow, MapReduce, Bigtable, Spanner, ML things, ...
This model scores very well in the image editing lmarena leaderboard, with a large gap of ~170 points to the next group of models.

lmarena.ai/leaderboard/...
August 27, 2025 at 1:12 AM
Link to detailed paper: services.google.com/fh/files/mis...
services.google.com
August 21, 2025 at 1:40 PM
..., long-distance shared-phrase-dictionary-based communication system ("we won", "send reinforcements", "retreat", ...) using fire and a water tank, first keyboard instrument, and first tic-tac-toe-like game.
June 10, 2025 at 3:42 PM
Btw, most of the things I mentioned above were from ~third to second century BC. And I didn't even mention the flamethrowers, automated coin-operated vending machine, early cataracts operation tool, atmospheric-pressure-based recurring fountain,...
June 10, 2025 at 3:42 PM
Plus early cryptography cipher machines, medical instruments, early musical instruments and more.

The guides were awesome and did live demonstrations.
June 10, 2025 at 3:41 PM
Early water+whistle based timer (up to seven hours) to wake up slumbering philosophy students so they didn't oversleep.

(Someone on X suggested "NapReduce" as a good name 😂)
June 10, 2025 at 3:38 PM
Early system that computed position of five planets, phase of moon, etc. thousands of years into future using intricate gears
June 10, 2025 at 3:37 PM
Early long-distance communication system using 5 bits (fire high or low) to encode the 24 Greek letters, one character at a time.
June 10, 2025 at 3:36 PM
🙏
May 6, 2025 at 4:41 PM
Here's the WebDev leaderboard from web.lmarena.ai/leaderboard
May 6, 2025 at 3:22 PM
Explore the capabilities of the updated Gemini 2.5 Pro, now in Preview in AI Studio and Vertex AI, and experimentally in the Gemini app. aistudio.google.com

We look forward to your feedback! 🙏
Google AI Studio
Google AI Studio is the fastest way to start building with Gemini, our next generation family of multimodal generative AI models.
aistudio.google.com
May 6, 2025 at 3:09 PM
Here’s a glimpse of what it can do - check out this retro Windows 95-style web app the model can build from a simple prompt.
May 6, 2025 at 3:09 PM
ITA was acquired by Google and became one of the foundations of Google Flights.

Fun fact: they had one of the largest Lisp codebases in the world.
April 23, 2025 at 9:53 AM