Stephanie Horbaczewski

Building Multimodal Models LLMs for eCommerce @ 2x founder 9-figure exit, YPO, FC Most Creative, Emmy Nom

[Stephanie Horbaczewski @iamsteph]

Solving E-commerce Color Classification Using Multimodal VQA Models: https://t.co/PpSNWnW8m1

[Stephanie Horbaczewski @iamsteph]

So romantic 🥹🥹🥹

[Philip Johnston @PhilipJohnston]

Few more 😍😍

[Stephanie Horbaczewski @iamsteph]

Of course it was. Fav @jacobeffron @patrickachase @corporayshid @Redpoint

[Stephanie Horbaczewski @iamsteph]

Ouuu can’t wait! 🦃
Ty for sending @mfbloodgood

[Matt Turck @mattturck]

Thanksgiving-week treat: an epic conversation on Frontier AI with @lukaszkaiser -co-author of “Attention Is All You Need” (Transformers) and leading research scientist at @OpenAI working on GPT-5.1-era reasoning models.

00:00 – Cold open and intro

01:29 – “AI slowdown” vs a wild week of new frontier models

08:03 – Low-hanging fruit, infra, RL training and better data

11:39 – What is a reasoning model, in plain language

17:02 – Chain-of-thought and training the thinking process with RL

21:39 – Łukasz’s path: from logic and France to Google and Kurzweil

24:20 – Inside the Transformer story and what “attention” really means

28:42 – From Google Brain to OpenAI: culture, scale and GPUs

32:49 – What’s next for pre-training, GPUs and distillation

37:29 – Can we still understand these models? Circuits, sparsity and black boxes

39:42 – GPT-4 → GPT-5 → GPT-5.1: what actually changed

42:40 – Post-training, safety and teaching GPT-5.1 different tones

46:16 – How long should GPT-5.1 think? Reasoning tokens and jagged abilities

47:43 – The five-year-old’s dot puzzle that still breaks frontier models

52:22 – Generalization, child-like learning and whether reasoning is enough

53:48 – Beyond Transformers: ARC, LeCun’s ideas and multimodal bottlenecks

56:10 – GPT-5.1 Codex Max, long-running agents and compaction

1:00:06 – Will foundation models eat most apps? The translation analogy and trust

1:02:34 – What still needs to be solved, and where AI might go next

[Stephanie Horbaczewski @iamsteph]

🎯

[Shreya @shreyacasmalert]

One of the best statements I've seen in a while

[Stephanie Horbaczewski @iamsteph]

❤️‍🔥🙌

[Michael Goldstein @mlg27_]

I’m 13. Last month I spent a week in San Francisco for Founders Inc’s off-season.

In 7 days I:
was the youngest at demo day
visited a16z & Cluely HQ
met founders I’d only seen online
went viral cold-emailing 75 OpenAI engineers and ended up in Sam Altman’s office.

Here’s the full story.

[Stephanie Horbaczewski @iamsteph]

Vody x @googlecloud

https://t.co/0RadD1G0Ca

[Stephanie Horbaczewski @iamsteph]

Neuroscientists make such interesting engineers. Another banger #unsupervisedlearning @jacobeffron
More @_RobToews!!

[Stephanie Horbaczewski @iamsteph]

All of this:

[Teknium 🪽 @Teknium]

Greatest video i seen all week idk what the problem is here!

[Stephanie Horbaczewski @iamsteph]

Anything for you, @corporayshid! My #UnsupervisedLearning fans — take a minute to fill out his survey 👉
https://t.co/4Om3NhP59M

[Stephanie Horbaczewski @iamsteph]

It’s just so good, @kevinweil — the seamless transition into being my own GPT was flawless.

[Stephanie Horbaczewski @iamsteph]

🥹🫶

[Matt Bloodgood @mfbloodgood]

My good friend @iamsteph is the most tenacious entreprenuer I’ve ever met - grateful to be part of her journey and to see the momentum building!!

[Stephanie Horbaczewski @iamsteph]

Grateful for momentum — signed something new with enterprise customers every week this month. Credit to @kirbyman01 posts for the constant inspo

[Stephanie Horbaczewski @iamsteph]

Whoa definitely follow for this masterpiece:

[Scott Wu @ScottWu46]

People have asked about our culture and recent employee communications. Cognition has an extreme performance culture, and we’re upfront about this in hiring so there are no surprises later. We routinely are at the office through the weekend and do some of our best work late into the night. Many of us literally live where we work. We know that people who joined Windsurf didn’t expect to join Cognition and while we’re proud of how we work, we understand it’s not for everyone.

We gave our team the opportunity to decide. We offered for all employees who joined via acquisition to opt into our culture with full clarity on what entails. We know that we will lose some strong talent in doing this, but we truly believe the level of intensity this moment demands from us is unprecedented. While not everyone is looking for a culture like ours, everyone deserves respect and appreciation for their work. Regardless of their decision, we accelerated and cashed out all four years of equity for everyone from Windsurf, even for the 85% of employees who hadn’t hit their one year cliff. And for those who opt out, we’re providing an additional nine months of pay on top of this.

[Stephanie Horbaczewski @iamsteph]

@2c2 @theallinpod @travisk @rabois @vody We build GenAI-ready data layers for retail—$2M ARR in just 8 months. Would love to get your feedback @rabois!

[Stephanie Horbaczewski @iamsteph]

For you @corporayshid 😘

[Stephanie Horbaczewski @iamsteph]

I love #unsupervisedlearning so much @patrickachase @jacobeffron @corporayshid @Redpoint

[Stephanie Horbaczewski @iamsteph]

Consulting’s bear case laid out clearly. Signals everywhere.
@TheFP @opinion_joe

[Stephanie Horbaczewski @iamsteph]

Ocean’s 11

[Deedy @deedydas]

Here's everyone Meta hired for their Superintelligence team.

Say hello to the new residents of Atherton with their $10M+/yr comp packages, everyone!

[Stephanie Horbaczewski @iamsteph]

@nikitabier Where are you speaking?!

[Stephanie Horbaczewski @iamsteph]

@JPMar111 @MOVAAI_ @mickeyxfriedman Or @mickeyxfriedman or @ashe_cs