Jerry Zhang ✓

@zjearbear

cofounder @lemma_ (yc f25) | production monitoring for ai agents

3 034Followers

290Following

603Posts total

2.3MViews on collected posts

Derniers posts

Jerry Zhang ✓@zjearbear13 Aug

@zjearbear Top 5 launch video of all time 10K views · 181 likes · 1 reposts · 2 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

And a huge thank you to my co-founder @colegawin_ and the Lemma team for getting us here today. To our families, friends from USC, and mentors who supported us before there was anything to show: this one's for you. 14.1K views · 31 likes · 0 reposts · 1 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

Thank you to our investors for taking a bet on us: @ycombinator @matrixvc @Liquid2V @vermilionfund @cervinvc @Position_VC @EightCapitalVC @_LeapYear @CommaCapital @dessaigne @ilyasu @ashl3ysm1th @MichaelandMa @HankCouture @DOitChoco @jennydhe @jeansini @KenCJohnston 14.7K views · 54 likes · 1 reposts · 0 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

Production traces are the clearest record of how agents behave, but you shouldn't have to dig through them manually just to learn how your agent is failing. Book a demo → https://t.co/63Lh9seDyv 15.8K views · 31 likes · 0 reposts · 1 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

We spent months embedded with agent teams, sitting inside their production traces, watching how agents actually fail. Now, Lemma processes 1M+ agent conversations a day, trusted by some of the fastest-growing agent startups (Modus, Boardy, Stan, Lucis, Folk + more). One design 16.6K views · 38 likes · 0 reposts · 0 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

Shipping the fix isn't where it ends. Lemma watches for the same behavior in production. If it regresses, you'll be the first to know. https://t.co/2ws6Xq4zOj

0:06

18.9K views · 37 likes · 0 reposts · 0 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

If it needs a fix, Lemma hands your coding agent everything it needs, the traces, the context, the failure, so the fix is one prompt away. https://t.co/vlQw66u7ls

0:09

22K views · 46 likes · 0 reposts · 1 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

When an issue becomes urgent, Lemma pings you on Slack. From there, you can see what happened, pull the relevant traces, and decide whether it needs a fix. https://t.co/CvliurKXyD

0:09

27.8K views · 59 likes · 1 reposts · 0 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

Here’s what that actually looks like. Lemma watches production runs and surfaces failures you didn't know to look for… we call them issues. https://t.co/YxUSJD6KB4

0:08

41.4K views · 99 likes · 1 reposts · 1 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

Agents are taking on real economic work. As runs get longer, mistakes become expensive at best, catastrophic at worst. Today, teams find out from user complaints. Or never. Monitoring tools only catch what you told them to watch for: you set up the judges, you trace the issues 52.6K views · 153 likes · 0 reposts · 6 replies Open on X →

Jerry Zhang ✓@zjearbear13 Aug

Agents f*ck up. We raised a $2.3M pre-seed to warn you before it’s too late https://t.co/VXplPObX6v

2:34

2M views · 9.8K likes · 487 reposts · 729 replies Open on X →

Face aux comptes de taille comparable

11 posts des 90 derniers jours, à côté de la tranche de under 10K abonnés. diffusé largement, mais peu de ces spectateurs réagissent.

Vues médianes18 898ce compte4 175médiane pour under 10K

Portée, %622.87%ce compte250.82%médiane pour under 10K

Engagement, %0.23%ce compte1.41%médiane pour under 10K

Indicateur	Ce compte	Médiane pour under 10K	Rapport
Vues médianes par post	18 898	4 175	4.53×
Portée (vues ÷ abonnés)	6.2× audience	2.5× audience	2.48×
Taux d'engagement	0.23%	1.41%	0.16×

Autres comptes de cette tranche → Comparer avec un autre compte → Comment ces repères sont établis →

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

2M13 Aug

52.6K

41.4K

27.8K

22K

18.9K

16.6K

15.8K

14.7K

14.1K

10K

Last 11 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.54%13 Aug

0.30%

0.24%

0.22%

0.21%

0.20%

0.23%

0.20%

0.37%

0.23%

1.85%

Reactions — likes, reposts, replies and quotes — divided by views. Median for under 10K accounts is 1.41%.

What the audience does

Likes67.6%10 510 in total

Reposts3.2%491 in total

Replies4.8%741 in total

Bookmarks24.5%3 812 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.

Derniers posts

Face aux comptes de taille comparable

Growth & engagement

Views per post

Engagement rate per post

What the audience does

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