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Sumer Sao
Etched
684 posts
user avatar
Sumer Sao
Etched
@sumersao
leading comms @etched // prev founding eng @kalshi @robinhoodapp @stanford
San Francisco
Joined January 2021
559
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1,321
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  • Pinned
    user avatar
    Sumer Sao
    Etched
    @sumersao
    Jun 30
    personal update: I joined Etched. I first met @robertwachen in early 2023 when I was a @neo scholar and he was a scholar finalist, one of my several interviewees. I still remember our first zoom. Within two minutes of meeting I knew Rob was not an ordinary 19 year old Harvard
    user avatar
    Etched
    @Etched
    Jun 30
    We're coming out of stealth. We've built our first racks after a successful A0 tapeout, $1B+ in customer contracts, and $800m raised. Early customer tests show us achieving SOTA throughput, latency, and power efficiency on inference workloads. Our first racks ship this summer.
    60K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Jun 5, 2024
    Most successful rebrands in history: War Department -> Dept. of Defense (1947) Global Warming -> Climate Change (2006) ... Cron Job -> AI Agent (2024)
    19K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Dec 7, 2023
    Texting all my friends the answers to the MMLU benchmark so when Facebook trains LLama 3 on my messenger data it'll know all the answers
    11K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 11, 2022
    Lots of ppl saying forecasts this midterms were very inaccurate. Let's actually look at the data in aggregate. Using @NateSilver538's public forecasting data I calculated how accurate each model was each day over the past 5 months compared to current results (@nytimes) 🧵 1/n
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 27, 2023
    Today I woke up and learned a big lesson. Yesterday, I realized I’d forgotten it’s my cofounder’s birthday this week. Nothing I ordered would arrive in time, so as a last ditch I thought maybe I could get more users on our waitlist ...
    29K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Sep 9, 2024
    6 years later and the team finally did it. Was a privilege to play a small part and observe the legendary founder mentality it takes to move a mountain this large.
    user avatar
    Tarek Mansour
    Kalshi
    @mansourtarek_
    Sep 9, 2024
    Kalshi just legalized trading on elections in the U.S. For the first time in 100 years, Americans will have access to legal election markets at scale. Historic moment for financial markets.
    3.1K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Oct 22, 2021
    Check out this article I wrote analyzing @Kalshi markets' pricing of Powell's potential replacement and its implications. @Benzinga @YahooFinance news.yahoo.com/traders-predic…
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 21, 2023
    Can finally short Adam thank god @Kalshi
    5.2K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 3, 2022
    P strange company I learned about on the subway today @Kalshi
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Apr 3, 2024
    This team just doesn't stop. And when you don't stop. For even one day. Year after year. You start to do the impossible... No one does this better than @mansourtarek_ and @luanalopeslara
    user avatar
    Tarek Mansour
    Kalshi
    @mansourtarek_
    Apr 3, 2024
    Today marks a pivotal moment for @Kalshi and prediction markets: Susquehanna (SIG), becomes the 1st institutional market maker to commit to Kalshi. Prediction markets have (finally) surmounted their most elusive challenge: liquidity. With ~$2 Trillion in yearly volume, SIG is
    3.1K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 27, 2023
    Replying to @sumersao
    The lesson: 1) Don’t think too hard? 2) Forget your best friends’ birthdays bc pressure makes diamonds?? 3) Ppl want our product???
    3.6K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Jun 25, 2025
    can't believe they're selling shares of a $10T company for $2B 🚀
    user avatar
    Tarek Mansour
    Kalshi
    @mansourtarek_
    Jun 25, 2025
    I’m excited to announce our $185M Series C valuing Kalshi at $2B. The round was led by Paradigm with participation from Sequoia, Multicoin, Peng Zhao, Neo, and Bond Capital. People choose to work at Kalshi not because of the money we've raised, but because of our ambition:
    3.2K
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 1, 2021
    Stanford had 40% returns on the endowment but can't keep late night open 😵‍💫
  • user avatar
    Sumer Sao
    Etched
    @sumersao
    Nov 11, 2022
    Replying to @sumersao
    I first broke down forecasts of each chamber. Interestingly, in the House, the most accurate predictions were made on 8/24. Ultimately the deluxe model prevailed. Any ideas why @538politics? Fascinating how once early vote data was released, accuracy dropped. 2/