Liam Fedus ✓

@LiamFedus · San Francisco, CA · joined 16 Oct 2012

Building industrial-scale science at @periodiclabs Past: VP of Post-Training @OpenAI; Google Brain

36 538Followers

1 223Following

1 238Posts total

9.3MViews on collected posts

Against accounts of the same size

6 posts from the last 90 days, next to the 10K–100K follower range. shown widely, but few of those viewers react.

Metric	This account	Median for 10K–100K	Ratio
Median views per post	65 268	2 743	23.8×
Reach (views ÷ followers)	178.63%	8.91%	20.1×
Engagement rate	0.74%	1.64%	0.45×

How these benchmarks are built →

Latest posts

Great work from our mid-training, RL, and infra teams (not to mention a ton of lab data) to pull this off! 20.2K views · 157 likes · 5 reposts · 11 replies 27 Aug 2026 Does your girlfriend sit front row for your technical talks and leave with 400 photos? Mine does. 81.8K views · 463 likes · 2 reposts · 22 replies 26 Aug 2026 Data centers are power-limited and OpenAI's Jalapeño sets new frontiers for tokens per second per watt. Impressive and fast work from OpenAI's ASIC program. https://t.co/GFY3vGP0po 11.9K views · 117 likes · 3 reposts · 7 replies 25 Aug 2026 OpenAI Jalapeño: Better Than Nvidia Blackwell OpenAI’s self-designed ASIC compared with Rubin, Jalapeño’s TCO, throughput per MW, and spicy deets https://t.co/dbuAUrRSt1 734.3K views · 1K likes · 108 reposts · 73 replies 25 Aug 2026 Elon's companies are winning in part by co-designing hardware all the way down to the materials. A new alloy unlocked single-piece gigacasting for the Model Y, and a new steel replaced 301 stainless on Starship. Materials are the deepest layer of the stack, but currently one of 48.7K views · 490 likes · 22 reposts · 9 replies 23 Aug 2026 This is why I switched Starship to stainless steel. We have since created our own new alloys and no longer use 301. 8.4M views · 45.9K likes · 4.5K reposts · 2K replies 23 Aug 2026

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