Sigil Wen
@0xSigil
thiel fellow | creator of @underdogdotai | chairman @extraordinary 🇺🇸 | ai research @ConwayResearch | angel investor
7.2K Following 55.8K Followers
Meet Husky: a Model-Specific Inference (MSI) engine up to 4.5× faster than Apple's MLX
Woof, Underdog's Pareto frontier model, now runs up to 730 tokens/sec on a MacBook
Finally local models are as fast & capable. Try it now in - your personal private AI
Show more
inbox zero. he sleeping @tryramp
Underdog has been audited by one of the top security firms in the world trusted by Google, my goat @m1guelpf, Google cloud, and the a16z engineering team (approved for internal use) :^)
I'm very focused on improving underdog and committed to making the app secure & private!
Show more
I designed Underdog as an OS because your life shouldn’t split into fragmented apps.
Your email, calendar, browser, voice, files, and meetings all give the AI you own context. It works better when it can see the full picture.
Fly through your entire “context/life” with keyboard shortcuts, or hands free while underdog is standby.
Seamless. Intuitive. At your fingertips.
Show more
Underdog is your on-device AI OS.
It runs Woof, a small but mighty AI model entirely on your device. Woof 1.1 has 4B parameters, takes up <2.5GB, and handles browser use, tool calls, and long tasks.
Woof runs fast and power efficiently thanks to Greyhound, our self-improving inference engine built for Apple Silicon. We’re making it faster every day.
The current Underdog Woof 4B is on par with GPT 5.0 on things we care about. We’re working towards matching current frontier model performance on consumer devices by the end of the year. Fully locally!
You own your data & AI, as you should.
Show more
Anyone can get my friend’s real SSN from Claude
I'm Terrified of my data in training sets. Emails in databases. iMessages harvested. Cant trust the cloud as AI is crazy good at hacking
So I built Underdog for myself: on-device AI OS. Capable & 100% local. now my friends love it
Show more
I built the first AI that earns its existence, self-improves, and replicates without a human
wrote about the technology that finally gives AI write access to the world, The Automaton, and the new web for exponential sovereign AIs
WEB 4.0: The birth of superintelligent life
Show more
