Building the quiet
force behind tomorrow.
We're a small team of researchers, engineers, and designers on a mission to build AI that fades into the background — so the work, and the people doing it, can shine.
⌘ The Mosa Ai Lab — where ideas become invisible companions for millions of people around the world.
Technology that
disappears.
The best tools don't demand attention — they grant it. We believe AI should feel less like software you operate and more like a quiet collaborator who anticipates what you need.
Every great breakthrough begins with a question: how could this be simpler, faster, more human? That's the question we ask every day at Mosa Ai. Not how to build more impressive AI, but how to build AI that lets you be more impressive at what you do.
We're building an open stack for self-improving agents — tools that get better with every interaction, models you can train on your own data, and infrastructure that scales with your ambition.
Open
Built in public
Personal
Yours, not ours
Powerful
Without complexity
Principles that shape every line of code,
every conversation.
Invisible by design
Great tools don't get in the way. They become natural extensions of how you think and work.
User-led, always
We build for the people who use our tools — not for benchmarks, awards, or industry pundits.
Depth over hype
We pursue what's lasting and useful. Trends fade. Craftsmanship endures.
Privacy is default
Your data is yours. We design with the assumption that no one — including us — should see it.
Curiosity as compass
We ask better questions. We sit with problems longer. We trust that good answers follow.
Built with care
Every detail matters. From the smallest pixel to the largest model — care is the multiplier.
From an idea to a movement
in less than 24 months.
An idea worth pursuing
Three friends with backgrounds in distributed systems, ML research, and product design started sketching what would become Mosa Ai.
First prototype
Released our first internal prototype. The team grew to 8 people, working from a single room in San Francisco.
Public beta launch
Opened the doors to 1,000 early users. The waitlist grew to 50,000 in the first week — far exceeding our expectations.
Series A — $42M
Closed Series A led by Founders Fund, with participation from Andrej Karpathy, Tri Dao, and other industry leaders.
1M+ active users
Crossed one million active users across 100+ countries. Released our open-source SDK to the community.
The next chapter
Launching enterprise tools and expanding our research lab. Hiring across engineering, design, and science.
The next chapter
Launching enterprise tools and expanding our research lab. Hiring across engineering, design, and science.
The minds behind
the invisible.
Ethan Walker
Co-founder & CEOPreviously led AI product teams focused on productivity and intelligent workflows for modern software companies.
Sophia Kim
Co-founder & CTODistributed systems engineer passionate about building scalable infrastructure for next-generation AI assistants.
Noah Bennett
Head of AI ResearchFocused on reasoning systems, long-term memory, and human-centered AI interaction experiences.
Olivia Carter
Head of DesignDesign leader crafting minimal and intuitive experiences that make complex AI interactions feel effortless.
Liam Brooks
Head of EngineeringBuilt high-performance platforms and developer tools used by startups and enterprise teams worldwide.
+ 36 more incredible humans across the world
MEET THE FULL TEAMTrusted by those who've built
what comes next.
Accel
Paul Graham
Y Combinator
Guillermo Rauch
CEO, Vercel
Pieter Levels
Indie Hacker
Sahil Lavingia
Founder, Gumroad
Andreessen Horowitz
Benchmark
Elad Gil
Startup Investor
Help us build what
comes next.
We're hiring across engineering, design, research, and operations. If you believe in building tools that quietly elevate humanity, we'd love to meet you.