Self-improving intelligence built and improved on your organizational context.
SF
Joined January 2025
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four weeks before YC demo day, we killed what we'd been building. it had a 50% CMO response rate, but we couldn’t stop thinking about an idea that nobody had a name for yet…
10,000+ downloads later, that idea is Dex.
On the 1st ep of First Commit, @reggitales explains why she dropped out of Harvard, left a YC batch mid-pivot, and is now building Dex — a browser agent helping knowledge workers offload the manual layer of their day.
ThirdLayer retweeted
If you're into continual learning, RSI, or self-optimizing agents, come to Intent this Friday in SF.
3 technical talks from the founders of Vmax, Trajectory, and Thirdlayer on closing the training loop in production:
@kevingu (CTO, @dexbythirdlayer) is covering context architecture for capturing organizational diffs, post-training on custom context, and a meta-harness that hill-climbs overnight.
@rronak_ (CEO, @trajectorylabs) will cover why GRPO collapses trajectory feedback into a scalar and loses signal, and how SDPO fixes this with a privileged teacher that distills richer supervision into the student. Live at Harvey, Clay, Decagon, Mercor.
@matthewjsargent (CEO, @VmaxAI) will cover why single-agent self-play self-calibrates (the proposer converges to tasks it can already solve) and how PopuLoRA fixes this with co-evolving teacher + student LoRA adapters on a shared frozen base.
Fri Jul 31, 6pm. Open Q&A after the talks.
Cohosted with @shaheersan and @SusaVentures
RSVP here (capacity limited) 👉 luma.com/l666hxiw
ThirdLayer retweeted
Most agents are static once deployed. Trained once, frozen, and brittle outside their training distribution.
We’re bringing together researchers and builders working on systems that keep learning, decompose problems into reusable pieces, and improve their own reasoning over time. Talks are from @kevingu CTO of Thirdlayer, @rronak_ CEO of Trajectory, @matthewjsargent CEO of Vmax followed by open Q&A.
Join us! luma.com/l666hxiw
ThirdLayer retweeted
INTENT Pt 3: Continual learning, RSI, Self-improving Harnesses this Friday. RSVP 👇
Speakers:
- @kevingu, ThirdLayer: AutoAgent (3.8M views, 4.5K GitHub forks)
- @rronak_, Trajectory: continual learning algorithms (used by Mercor, Clay, Harvey, Decagon)
Hosted w/ @SusaVentures
INTENT Pt 3: Continual learning, RSI, Self-improving Harnesses this Friday. RSVP 👇
Speakers:
- @kevingu, ThirdLayer: AutoAgent (3.8M views, 4.5K GitHub forks)
- @rronak_, Trajectory: continual learning algorithms (used by Mercor, Clay, Harvey, Decagon)
Hosted w/ @SusaVentures
RSVP here: luma.com/l666hxiw
Surprise!
100 of our earliest users were sent limited-edition Dex stickers in handwritten envelopes.
Comment if you want some too :)
want stickers? become a user and 10x your workflows with agents that have full operational context + memory: joindex.com/
We do fun surprises like this in our discord all the time. Join so you don't miss out next time!
discord.gg/Serz5TfS4
If your writing still sounds like AI slop, the problem isn’t the tool. It's you.
The best founders have trained their AI on exactly how they write. Down to when to use "!!" vs ":)" and different email structures and cal links for hiring vs sales.
Dex builds this automatically from your actual context -- your relationships, history, workflows, and the thousands of decisions across your apps.
Comment "write-like-me" for the prompt.
ThirdLayer retweeted
@dexbythirdlayer is hiring MTS.
Our CTO hates posting but goes viral anyway.
His 2nd post ever was AutoAgent. 3.5M views, 4.5k stars, 500 forks.
So, my intern spent all day forcing @kevingu to write this hiring post. Enjoy :)
Telegram integration is live! If you're in crypto, trading, or just running serious comms through Telegram, you know that managing chats used to be completely unscalable.
Now, Dex has 35 tools that allow it to read, search, and act on Telegram. No more leads going cold, questions getting buried, and context getting lost in an endless scroll of messages.
ThirdLayer retweeted
We're hiring a multi-hyphenate product designer with impeccable taste and technical depth.
Current UI models no longer work for AI agents. Every interface was designed for a world where humans did the execution. Now that agents handle the execution, interfaces now serve as channels for intent and negotiation.
Nobody’s designed these primitives yet.
If you want to be at the frontier of defining what this next generation of UI actually looks like, DM me with your work.
One of our users hit inbox zero and cleared 1,900 emails in a single session.
We shipped a full gmail suite that:
- scans your inbox with a personalized triage
- drafts replies in your voice
- auto syncs your CRM
- recovers old leads
- personalizes outreach at scale
- creates action items sent straight to your Slack.
Runs every morning or on-demand. You never have to open your inbox.
New features launching every couple days.
sat down with @notablecap to talk about what that bet actually looked like, and where we're taking it next.
Spotify: open.spotify.com/episode/1Vb…
Apple Podcasts: podcasts.apple.com/us/podcas…
YouTube: youtu.be/tx_KD1w_XtU
ThirdLayer retweeted
Introducing First Commit — a new Notable podcast series that talks to builders solving hard problems before the industry catches up.
First episode drops tomorrow with @reggitales, co-founder of @dexbythirdlayer.
We pitched AI coworkers at YC demo day before AI coworkers became the obvious direction notion, zapier, glean, everyone was racing into. Before that, we bet on computer-use agents before agents were a thing, and browser copilot before AI browsers existed.
Sat down with Notable Capital to walk through what it's like to give up everything, bet hard on something nobody else sees, be obsessed enough to do it anyway, and watch the world wake up to it in real time.
Now we’re betting on where it’s headed next.
First episode drops tomorrow with @reggitales of @dexbythirdlayer. Subscribe and come find out how she’s building the self-driving workspace that lives in your browser🎙️
ThirdLayer retweeted
The AI chat box had a good run. So now what?
We’re tackling that question and more at Intent: Proactive & Predictive Interfaces, this Thursday.
@amandamhuang and @rkhkimx are moderating a stacked panel featuring Jenning Chen (@simile_ai), @KevinGu (@dexbythirdlayer), @justoutquan (Tomo) and @kneureither (@interaction).
May 21st, 6 - 7:30 PM | Co-hosted with @dexbythirdlayer
luma.com/vs9pfati
ThirdLayer retweeted
The gap between “I need to do X” and X getting done? That’s an interface problem.
We’re getting together this Thursday with founders and builders who are closing it.
Join us for Intent: Proactive & Predictive Interfaces, co-hosted with @dexbythirdlayer and moderated by BCV investors, @amandamhuang and @rkhkimx.
Doors open at 6 PM! Spots limited:
luma.com/vs9pfati