Michael Bernstein

@msbernst · Stanford, CA · joined 26 Nov 2007

@stanford Professor of Computer Science, @simile_ai co-founder, nationally bestselling author. I build interactive, social, and societal tech.

19 347Followers

1 912Following

814Posts total

736.5KViews on collected posts

Against accounts of the same size

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

Median views6 967this account2 751median for 10K–100K

Reach, %36.01%this account9.00%median for 10K–100K

Engagement, %0.83%this account1.65%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	6 967	2 751	2.53×
Reach (views ÷ followers)	36.01%	9.00%	4.00×
Engagement rate	0.83%	1.65%	0.50×

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

659.6K30 Jul

7.8K

2.8K

2.3K21 Aug

15.1K25 Aug

6.1K

37K2 Sep

5.7K

Last 8 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.35%30 Jul

0.94%

1.94%

1.28%21 Aug

0.71%25 Aug

0.71%

0.39%2 Sep

1.26%

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.65%.

What the audience does

Likes57.6%2 349 in total

Reposts5.1%207 in total

Replies3.6%145 in total

Quotes3.1%128 in total

Bookmarks30.6%1 247 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

I describe AI behavioral simulation as a “what-if” machine. I wrote about what a What-If Machine is, and how it works, at @simile_ai: 5.7K views · 63 likes · 6 reposts · 2 replies 02 Sep 2026 Most big decisions are some version of a “what-if” question. What if we launched this? What if we raised the price? What if we didn’t? At Simile, we’re building a What-If Machine to simulate those decisions before making them for real. But getting the answer right requires 37K views · 119 likes · 16 reposts · 3 replies 02 Sep 2026 Behavioral simulation requires confidence estimation. I'm 100% fine asking the system to simulate unlikely situations if it can signal lower confidence, so long as I can also get high confidence simulations and calibrate my trust. 6.1K views · 40 likes · 2 reposts · 1 replies 25 Aug 2026 Simile trains a simulation model. Also, we train another model that predicts the error of the simulation model (the “confidence model”). Tucked away in a secret dungeon below Mission Bay, we also have a “confidence confidence model” that predicts the error of the confidence 15.1K views · 87 likes · 13 reposts · 6 replies 25 Aug 2026 Our new @PNASNews brief report on the value alignment of social media feeds is now live on @ConversationUS: https://t.co/ooN2VF6DVu Your For You algorithm is likely misaligned with your values, even when it's ranking accounts that you actively follow. Work led by @_ziv_e! 2.3K views · 22 likes · 7 reposts · 1 replies 21 Aug 2026 Simile is in the New York Times today: https://t.co/l2C6ua99c7 2.8K views · 49 likes · 3 reposts · 3 replies 30 Jul 2026 Many of the most important decisions that we make are ultimately bets on how people will behave. Simulation is a what-if machine for decisions: principled, accurate, calibrated simulations let us make informed bets. Very excited about the next chapter. 7.8K views · 65 likes · 7 reposts · 2 replies 30 Jul 2026 Today we’re announcing our Series B. We’ve raised $200M at a $2B valuation from Greenoaks with participation from Index Ventures, Hanabi, A*, Bain Capital Ventures, CVS Health Ventures, and Definition. Our mission is to simulate all eight billion people on earth, accurately. ht 659.6K views · 1.9K likes · 153 reposts · 127 replies 30 Jul 2026