Lijie Chen ✓

@wjmzbmr1 · Berkeley, CA · joined 19 Jan 2016

Assistant professor at UC Berkeley EECS; reasoning at OpenAI Previously: Miller Postdoctoral Fellow at UC Berkeley, Ph.D. in MIT EECS

10 357Followers

448Following

478Posts total

20.5MViews on collected posts

Against accounts of the same size

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

Median views1 097 790this account2 747median for 10K–100K

Reach, %10599.49%this account8.35%median for 10K–100K

Engagement, %0.16%this account1.45%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	1 097 790	2 747	400×
Reach (views ÷ followers)	106.0× audience	8.35%	1 269×
Engagement rate	0.16%	1.45%	0.11×

Others in this range → Compare with another account → How these benchmarks are built →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

47.5K15 Oct

13.8K16 Oct

8.4K6 Nov

13.7M20 May

125K21 May

183.6K26 Jun

95.5K27 Jun

4.2M1 Aug

Last 9 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.55%15 Oct

0.36%16 Oct

0.58%6 Nov

0.24%20 May

0.60%21 May

0.13%26 Jun

0.46%27 Jun

0.20%1 Aug

0.12%

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.45%.

What the audience does

Likes79.2%36 753 in total

Reposts10.9%5 060 in total

Replies3.4%1 571 in total

Quotes5.1%2 370 in total

Bookmarks1.4%659 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.

Latest posts

10 proofs from our next major model Astra on long-standing open problems in mathematics and theoretical computer science (also including new circuit lower bounds for computing the permanent!) GPT-5.6 has already enabled so much exciting work in math and science. Can’t wait to 2M views · 2.1K likes · 161 reposts · 62 replies 01 Aug 2026 yes, nonsofic groups exist: this statement is one of many new beautiful results proved by Astra, our next major model. We're releasing 10 such Astra proofs, complete with lean certificates and CoT walkthroughs for each of them. The results are wide-ranging, from von Neumann 4.2M views · 6.7K likes · 947 reposts · 276 replies 01 Aug 2026 This is incredible!!! My first paper in my PhD back in 2018 was on this problem (getting a 2^{logstar n} dim bound); since then, I have been thinking about it on and off for at least 7 years. It's really crazy how things turned out. Last month at OpenAI, our model disproved the 95.5K views · 391 likes · 39 reposts · 6 replies 27 Jun 2026 Given a set of n points in d dimensions, the problems of finding the furthest pair and the closest pair require no explanation even to laymen. However, while finding the closest pair has a much more efficient algorithm, 183.6K views · 201 likes · 24 reposts · 3 replies 26 Jun 2026 1/ Today, an internal @OpenAI model has refuted Erdős’s unit distance conjecture — a research result that one could recommend “acceptance without any hesitation” to the Annals of Mathematics, one of the most prestigious journals in mathematics. We came across it in a side quest 125K views · 655 likes · 83 reposts · 9 replies 21 May 2026 Today, we share a breakthrough on the planar unit distance problem, a famous open question first posed by Paul Erdős in 1946. For nearly 80 years, mathematicians believed the best possible solutions looked roughly like square grids. An OpenAI model has now disproved that https: 13.7M views · 26.4K likes · 3.8K reposts · 1.2K replies 20 May 2026 The ITCS 2025 accepted papers list is out: https://t.co/FUAqOWJJ9L 8.4K views · 44 likes · 5 reposts · 0 replies 06 Nov 2024 Incredible breakthrough with a super beautiful proof! 13.8K views · 47 likes · 2 reposts · 1 replies 16 Oct 2024 Can efficient quantum circuits behave like truly random unitaries to any efficient observer? The existence of such circuits, called pseudorandom unitaries (PRUs), has been open since 2017. In this paper w/ @RobertHuangHY, we show that PRUs exist: https://t.co/VgURAwhnwu Thread: 47.5K views · 229 likes · 26 reposts · 2 replies 15 Oct 2024