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Umar (@umarraja) profile picture

Solo builder. Scaling products in the age of AI

Joined August 2025
Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)Photo by Umar (@umarraja)
Will that mean keeping the Cybertruck in production beyond next year?
🚨 JUST IN: Rep. Carlos Giménez has formally invited Elon Musk to RELOCATE Tesla's headquarters from Texas to FLORIDA! Giménez cited concerns over newly elected Democratic Socialists in Texas, arguing Florida offers a more business-friendly environment. “Florida is rolling out the red carpet for innovation, investment, and job creation.”
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Umar retweeted
No one is sending their 3 year old to daycare in a Cybercab.
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"If somebody is holding a candlelight vigil because they love your product so much, maybe you should make more of it." - Elon Musk on GM cancelling the EV1
"If I asked the customer what they wanted, they would have said more triangular Cybertrucks" Elon Musk, maybe.
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How's your Saturday going?
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Background subagents in Claude Code now use less of your usage limit. A running subagent updates its status line every 30 seconds, and each update used to re-read its whole conversation. Now Haiku 5.5 writes it from short notes instead, so each update costs about 99% less.
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Reverse Engineer Anything and removing malware/spyware from your own devices sits so close to the cyber guardrails that phrasing or word choice can mean the difference between a refusal and smooth sailing. The rumors that Claude was nerfed started on reddit, and in those threads many comments point out that Claude will still do it if you rephrase it. OpenAI is treating the similar refusals with codex as accidental decision-boundary issues and says they're getting fixed. I expect Anthropic will do the same. It's pointless and counterproductive to try to restrict this. Let people do what they want with their own property. They'll do it anyway with less restrictive models, and fighting it just means losing subscriptions and a resentful public.
these blocks are mostly accidental and a result of difficult decision boundaries; there is no prohibition against reverse engineering with codex. it's getting fixed
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My interview with Sam Altman (@sama): 0:00 Intro 0:52 When Will AI Discover New Treatments? 3:31 Why AI Hasn’t Killed Coding Jobs 11:47 Personal AI Assistants 15:39 Why Are We Busier Than Ever? 20:10 Why the AI Consciousness Debate Worries Sam 26:09 ChatGPT Is Too Agreeable 30:03 OpenAI’s Bet on Chips and Cheaper Compute 34:20 Why AI Needs a New Kind of Computer 37:41 Sam on Pressure: “Pick the Big Thing” 42:18 Why “AI Will Cure Cancer” Isn’t Enough
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Over the next couple of years, the biggest moat will be having a personal brand. AI will occupy every corner of the internet and social media and humans will go looking for that authentic connection. Start building a personal brand now.
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Following this process has helped me a lot with making decisions for my apps and other products.
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The Ferrari CEO praised @Tesla's new Roadster unveil today: "It ​certainly shows that in the automotive world there's ​still ⁠a lot to be done. We have to keep dreaming. As a European, thank you for showing us how that, even in an old ⁠world, ​you can still innovate and dare." He gave the Roadster launch 10 out of 10 for technology and 10 out of 10 for presentation.
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Imagine having to pretend to hate the guy that made this all reality:
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Anyway, you guys DO realize that this Roadster is planning stage technology for low gravity moon and Mars vehicles right? Because that's what all the research into shoving these thrusters into a small vehicle is really for. Remember. Everything Elon does is about space.
Elon has the chance to do the coolest thing right now.
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Photo of the night
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Turns out the future does have flying cars
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Umar retweeted
If your trials aren't turning into payments, run this before you change anything. Paste this prompt with your App Store Connect export/connection: "Compare these two date windows. For each: downloads, proceeds, proceeds per download, trial starts, trial-to-paid by country. Flag anything else that changed between windows (price, version, geography). Don't call it a win unless proceeds per download moved." When I did this on one app: proceeds +12%, downloads −13%, proceeds per download +29%.
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apple will terminate my account in 10 days
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Umar retweeted
building a company in 2027
building a company in 2026
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I removed the 3-day free trial from one of my apps. Across two 13-day comparison windows, App Store earnings were 12% higher afterwards, with 13% fewer downloads. If your trials aren't becoming payments, test no trial option at the same price. Compare earnings per new user over the same window.
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So Opus 5.5 dropped. Here are a few things to know
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Here's everything I announced at Meta Connect today 👇
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