Bartek Pucek

founder of The Thinking Company. angel investing (pre-seed @elevenlabsio, @salespatriot_ @ZetaLabsAI, @Golf__mcp, @kickfinance, @Wordware_ai, and many others)

[Bartek Pucek @barticz]

For founders who dream harder.
https://t.co/d5GFx7IGi9

[Jennifer Li @JenniferHli]

One of the cleanest and most beautiful European cities I’ve been to. The energy is electric here. ⚡️

[Bartek Pucek @barticz]

Two Poles and a bet that voice could change everything.

The @ElevenLabs butterfly effect will be seen for years.

The homecoming.

[Mati Staniszewski @mati]

https://t.co/I69PRuEzbo

[Bartek Pucek @barticz]

@JenniferHli See you there!

[Y Combinator @ycombinator]

TesterArmy is the simplest way to QA your website or mobile app.

It runs real tests across browsers and devices, catches regressions on every PR, generates tests from natural language, and much more.

Try now and start testing in minutes: @TesterArmy

[Bartek Pucek @barticz]

@ycombinator @TesterArmy LFG!

[Bartek Pucek @barticz]

Time to build.

[Bartek Pucek @barticz]

@kimmonismus Best agentic FTE out there. 🇵🇱

[Bartek Pucek @barticz]

Everyone should be @viktor__com pilled.

[Fryd Wiatrowski @frydwia]

Today, we’re announcing Viktor’s $75M Series A, led by @Accel .

@viktor__com was supposed to be a small experiment.

It became the AI coworker 10x'ing real businesses.

$15M in annualized revenue run rate. In 10 weeks.

– Small companies saving millions of dollars
– Sourcing hundreds of thousands in new revenue in their first 30 days
– Whole teams getting half their week back
– Companies running 40% leaner without cutting output

Viktor is not another AI tool.

It’s the first true AI employee.

The vision that has been with us since 2023 when we started the company has finally been shipped.

Back then, it was just the two of us, with a very small but dedicated team, iterating for years. Failing multiple times.

Showing products that users didn't even want to test!

But we never gave up.

Our decisions were often wrong. Certainly more often than not! We kept trying.

Now we’ve shipped something people love.

Worth every sleepless night. Every sacrifice.

The best employees don’t need to be told what to do.

Neither does Viktor.

Grateful to @Accel, our team, our earliest users, and everyone who believed this category could be bigger than chat.

[Bartek Pucek @barticz]

@frydwia @Accel @viktor__com Congrats!

[Dwarkesh Patel @dwarkesh_sp]

What was the most important transition in human history, the thing that most drastically altered our species' way of life? David Reich's lab has found evidence pointing to a new answer.

There are two standard candidates:
1. The shift from hunting and gathering to farming, around 10,000 BC.
2. The Industrial Revolution, around 1800 AD.

Here's one way to adjudicate this:

When a species' environment changes drastically, natural selection accelerates, because the species has to catch up to adapt.

So the biggest transition will have happened in the period with the most rapid natural selection.

What David's lab has found is that the period with fastest natural selection wasn't 12000 years ago, and it wasn't our modern period.

It was the Bronze Age, about 5,000 to 2,000 years ago.

What was it about the Bronze Age that changed humans so profoundly?

[signüll @signulll]

one of the most refreshing things on the planet is talking to someone who just *gets it*.

like you don’t need a preamble, & you don’t need to articulate the shape of the thought before you can share it cuz they just meet you where you already are. as if they skimmed your mind & married to the culture before you say a single word.

these people are rare, & conversations with them are incredible because you skip the surface layer entirely & land in the depth almost immediately. they’re the best ppl to riff with, ideate with, & think forward with.. the bandwidth is wide & already open.

this is true for any type of relationship.

[Filip Kozera @kozerafilip]

Proactive agent that thinks and acts like you.
Multiplayer AI Brain for teams.
Proper GUI for commanding 50 agents.

https://t.co/zsDxICHezv is all three. Sauna goes live today. First 2000 people, use access code LAUNCH for $80 of weekly(!) credits.

Let’s explain. Multiplayer only works once the personal brain is powerful. So let's start here.

Personal AI Brain
3,800+ tools connected. State of the Art memory. Skills and schedules you teach once that get repeated forever on cheaper models. An AI first CRM.

Lives on the cloud so you can initiate tasks from anywhere: iMessage, Slack, Email. Also no need for a Mac mini 😉

GUI
AI agents have been stuck in their MS-DOS era. A chat box, a scroll buffer, no way to command 50 of them. We built the first GUI: Live sessions on one side, work waiting for your sign-off on the other, plus the things Sauna kicked off while you were asleep waiting for review. Game mode helps clear the queue with actual joy.

Okay so far so good, but how to give benefit of what you built to more people or whole team?

Multiplayer
Once your Sauna actually knows you and you gave her access to your tools, you can use multiplayer.

Two modes:
- Brain access. My co-founder Robert plugged my brain as a tool into his Sauna last month. He can ask it about pricing while I'm in other meetings, gets a sourced answer back, never has to interrupt me. That’s read only. Yolo mode gives him access to all my tools too :O
- Communal Saunas extend that to whole companies with proper permissioning. Folder owners decide what's true for the whole company and build skills. Most get their personal brain + read access to communal files and memories. Works also for group planning my best friend's bachelor party.

The Way
I’ve been obsessed about AI Brain since 2016. Our human brains suck at some things like memory and are brilliant at others like creativity. We are also particularly bad at thinking we are all on the same page and then realising weeks later that we weren’t. Most leaders spend their days being the human diff tool, catching contradictions in hallway conversations and Slack threads. Repeating themselves 50 times. Now every company is spinning up hundreds or thousands of agents that drift faster than humans do, feeding each other their drift as context. Compounding rot.

After 10 years and one failed company in this space we are launching the solution.

The Launch
We thought about a celebrity launch. Margot Robbie in a bathtub explaining agents. But then we realised the same money gives the first 2,000 people free daily credits, every day, until we burn through that $1,000,000.

Sauna runs Claude, GPT-5, Gemini, GLM-5.1, DeepSeek, Kimi so you can budget yourself. The labs are racing to lock you so they can milk you in a year. We picked your side.

Onboarding
It’s live at https://t.co/8ekc1ZtzoJ We’ve preheated saunas based on a niche. Use the access codes in the comments to get a better experience.

[Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞) @teortaxesTex]

Poland has made like half of core OpenAI researchers
strongly bullish on Poland (and goblins)
I think Poland might be more valuable than NVidia
The trick is to keep that value in Poland

[Marc Andreessen 🇺🇸 @pmarca]

The AI we thought we’d get was bloodless alien machine intelligence. The AI we actually got was the complete knowledge and culture of our civilization reflected back at us. Of course we will love it deeply.

[Bartek Pucek @barticz]

Life is computational.

[Bartek Pucek @barticz]

More: https://t.co/6KPTcAvSZD

[Bartek Pucek @barticz]

The Roman Army discovered that a leader can coordinate about eight people. Eight soldiers, one decanus. Eighty men, one centurion. Five thousand, one legion. Railroads adopted the same structure in the 1850s. McKinsey packaged it for corporations in the 1960s. Every company on earth still runs on it because humans were the only coordination mechanism available.

AI can replace the coordination function itself. The world model replaces the status meeting. The intelligence layer replaces the manager routing information between teams. People move to the edge, where they do work the model can’t do yet.

That model normalizes to three roles: builders, owners of cross-cutting problems with 90-day mandates, and player-coaches who combine building with developing people. No permanent middle management layer. The system handles alignment.

For two thousand years we had no alternative to hierarchy because we had no alternative coordination mechanism. Now we might.

[Bartek Pucek @barticz]

@heymaciek @LOTPLAirlines The airline. It’s from multiple airports.

[Bartek Pucek @barticz]

The company org chart itself is becoming a temporary structure, compressed and redrawn faster than any management theory can keep up with.

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