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.
Crunched started life as a summer internship project by @malaikaaiyar and @TervitLuke 🔥
Thank you for building the first version this summer and inspiring us to launch it this winter 🫡
Won 2nd at Junction Hackathon by building Artificial Sauna Intelligence while naked in a sauna.
Sigma Saunas: World's first agentic sauna platform.
@bryan_johnson - AI + heat exposure collab?
LeetCode won't get you the startup job.
Building PrepShift: interview prep with real company intel + application tracking.
Waitlist: https://t.co/wruKImMK5m
Day 1 wrap up of @aiengine_hack the Engine Room organised by @seidtweets
Great to have @lkshaas joining us from @GoogleDeepMind where our 9 fellows got to hear first hand what his day to day looks like as a PM with Gemini, how he sees RL fine tuning as the opportunity for next gen applications, why agent eval is crucial but hard to done well.
He also shared his top tips on how our fellows should focus more of the week testing the market with hypothesis to find that high impact idea that every founder seeks.
More to come as we close off night 1 👀
Four guys built and sold a company with Lovable in 20 hours, here’s how:
1. Raised €6k+ in sponsorships from OpenAI, V7, Cluely and Recurse ML
2. Built LeadFlare, an AI agent that sources and contacts high-value leads.
3. Identified Revel as a buyer and tailored the product to them.
4. Incorporated the company in the UK.
5. Revel’s team literally flew to Stockholm to meet them.
6. Signed the deal: acquired for $20,000 same day.
This is probably the coolest thing I've seen done with Lovable so far.