Sagi Zigmon (@thezigmon) header
Sagi Zigmon (@thezigmon) profile picture

Building @foundertape · making music

Tel Aviv
Joined October 2026
Photo by Sagi Zigmon (@thezigmon)Photo by Sagi Zigmon (@thezigmon)
I just launched Founder Tape: people building things answer one question out loud, from what actually happened. No signup, about 90 seconds. The first tape is mine: the dog app I never shipped, and the woman who did. foundertape.fm/t/1?s=x
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wore my QR code to a startup pitch night tonight. people actually scanned my back 😂 founders answer one honest question out loud, 2 minutes, no signup. scan it or: foundertape.fm
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Sagi Zigmon retweeted
Life is too short to not work with friends
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3 tapes on the site and 2 of them are mine haha. looking for 5 builders this week to answer one question out loud: how did you find your first customer? a minute or two, no editing. reply if you're in and i'll dm you
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Sagi Zigmon retweeted
This is f*cking insane. Anthropic engineer: "You're not supposed to prompt Opus 5.5 You're supposed to build a system that prompts itself. At Anthropic, 90% of our engineers have already built these systems" In 30 minutes, she walks through exactly how Anthropic builds agents that remember, fix their own mistakes and get sharper with every run. Better than any $1000-$2000 agent course I've seen. Watch it, then read the article below ↓
Readers added context they thought people might want to know
Lamis never says "You're not supposed to prompt Opus 5.5” in here talk at AI Dev Con. The caption misrepresents the video knowing most won’t watch the video all the way through and jump to the articles. youtube.com/watch?v=tTcxVv…
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Sagi Zigmon retweeted
Vibe coders, thank me later 21st.dev reactbits.dev magicui.design uiverse.io mobbin.com Your app stops looking AI-generated!
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Sagi Zigmon retweeted
Me reacting to the Binance Hack
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Sagi Zigmon retweeted
Neuralink deep dive
Full HUGE* If True episode on Neuralink and the future of brain computer interfaces I toured @neuralink and got a close up view of their new R1 surgical robot, to see the future they and @elonmusk are building and how it is already changing lives... 00:00 What if you put a chip in your brain? 01:02 What does a human brain feel like? 02:17 How does your brain work? 03:58 Can a brain computer interface read your thoughts? 05:19 How do you get a chip into your brain? 08:07 What’s inside Neuralink’s implant? 10:06 How do you build a brain implant? 11:07 How does robot do brain surgery? 12:20 What could you do with a brain chip? 15:05 How are brain computer interfaces already being used today? 16:07 How are brain chips huge if true?
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Sagi Zigmon retweeted
AI made it so anyone can build anything, but everyone was already distracted, so AI just made it 10x worse. Your competition was non existent to begin with, and your only real competition is your own mind.
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saw it 3 times this week: the awkward thing people made themselves beat the polished thing they paid for. tiktoks over an agency, a raw screen recording over news posts, a first podcast full of mumbling. maybe awkward is the feature
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what's the one question about your project you wish someone would actually ask you? not "what's your mrr". the real one
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Sagi Zigmon retweeted
this is my guiding principle.
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the hardest part of building wasn't the code. it was showing it to someone before i thought it was ready
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what's the win you're proudest of that nobody noticed
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people keep asking if $1k mrr is still a big deal. pretty sure the first $20 from a stranger is the biggest number most of us ever see. what did your first paying customer actually buy?
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Made a short AI video for Founder Tape. The guy in the video isn’t real. Your story is. Which idea did you drop, and what made you stop? ~90 sec, no signup 👇 foundertape.fm
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what would you tell yourself the day you launched to zero signups?
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Tape #002 is up. Before launching, I showed Founder Tape to three friends. One said the intro was too cheesy. One said people prefer video. One said getting people to post is the hard part. What I changed, and what I didn’t 👇 foundertape.fm/t/2?s=x
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the version you'd be embarrassed to charge for is usually the one people would pay for. what did you hold back because it felt too simple?
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everyone posts the thing they shipped. nobody posts the thing they quietly stopped building what idea did you drop, and what made you stop?
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