15+ yrs shipping software. Now ceo & founding engineer at https://xitter.cf/t.co/SUEW7TOKBP — agentic development studio. Building agentic infrastructure and harnesses.

Joined April 2019
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The 2008–2012 era gave birth to an unprecedented level of creativity. Most features shown on stage over the past decade were born back then as a @Cydia tweak. iOS sucks because creativity doesn't flourish in a walled garden. The only path for Apple is to open the system.
Calif’s Chollima jailbreak: • Kernel r/w, SPTM bypass, sandbox escape • iOS 27.0.1; demoed on MIE-enabled 17e & 18 Pro • Unpatched 0-days: Duo could get a day-one untethered jailbreak • Will get released at some point but no ETA • Get your 18 Pro/PM on 27.0.1 or buy one now
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Ivan Oparin retweeted
Calif’s Chollima jailbreak: • Kernel r/w, SPTM bypass, sandbox escape • iOS 27.0.1; demoed on MIE-enabled 17e & 18 Pro • Unpatched 0-days: Duo could get a day-one untethered jailbreak • Will get released at some point but no ETA • Get your 18 Pro/PM on 27.0.1 or buy one now
At #hexacon - Calif.io demos iOS 27.0.1 untethered jailbreak on iPhone 18 Pro
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Yes!
iPhone 18 Pro fully jailbroken on iOS 27.0.1 in under a minute. Sandbox escape to kernel, Full root, SSH, Sileo on a stock iPhone 18 Pro live demo.
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One week and you've beaten Federighi's team to it!
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worst timing ever!
Mission S. Authentic. Consistent. Timeless. A glimpse into the future - shaped by our heritage. Mid-engine architecture. A focus on the driver and the driving experience. Call it a love letter.
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Freaking insane.
JUST IN: Elon Musk unveils the Tesla Roadster by launching it off a ramp before the car flipped in midair and safely landed on the ground. The car is a collaboration between Tesla and SpaceX. One of the most insane things I've ever seen.
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Replying to @viticci
I think the same applies to hard architecture problems. Models don’t have taste and often can’t design an elegant architecture - I mean platform-level, how the pieces fit together. They produce something that works. To make it beautiful, with few parts and obvious boundaries, you need human × agent collaboration.
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Couldn't agree more, codex is just complete outright ux mess, period.
Went back to codex desktop today to do some tax prep stuff and holy hell the ChatGPT desktop app is falling apart There's so much here I like and want to use, but it's such a slow, janky, incoherent mess it's impossible The new "spaces" feature is actually amazing. Such a good idea that I've been building a lot of my video pipelines around, the only problem is that buggy and the UX is a dumpster fire It seriously feels like there are 5 companies all working on their own products who have to ship them all together in the chatgpt desktop app while not being allowed to talk to each other Go back and look at Dev day, they shipped 30+ features. Almost all of these are dope and useful. The problem is you haven't heard of 80% of them and it's all just floating around in this blob that's chatgpt This stuff is hard, I don't envy the position they're in. You have to keep shipping as fast as possible so you don't fall behind, but you also need time to polish and organize things. And this has to be coordinated across a bunch of teams and dozens of people and hundreds (thousands) of agents. I could go through all the specific issues but 1) it'd take too long and 2) anyone who uses it already knows most of these (very laggy, sidebar sucks, features are too hidden, spaces "tabs" system is a mess, etc.) Codex desperately needs a dictator with an actual coherent vision
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Replying to @ricketson_
Really cool stuff!
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Replying to @johnternus @finkd
@johnternus @finkd Amazing times! Thanks for bringing affordable compute to the people [and standing with your words]!
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Replying to @DanFessler
Word of a man!
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Replying to @_ARahim_
Great work on fixing broken stuff!
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Mind-blowing. Next-level 'pelican riding a bicycle' result.
Argon has this amazing natural understanding of the world. It can do so many things from first principles. Here's a pelican riding a bike, using fourier epicycles. Video made by Argon. Time-synced Lyria 3.5 music prompted by Argon.
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2/2: I open Claude before bed to check something personal and get an infinite list of agent sessions tirelessly building my product. Last thing I want to see at night. The chat I need is impossible to find, and when I do know where it is, the navigation is the worst possible. @claudeai do a better job!
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1/2: I thought UI harnesses couldn’t be worse than the Codex mac app, but then I opened the new Claude on iOS. Next-level insanity. This chat/work unification is a disaster worth studying 🧵
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Replying to @DanFessler
love this!
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Ivan Oparin retweeted
Really nicely done.
Introducing TrellisWM: The Fractal Window Manager for MacOS Its how the desktop should have always been. Download at TrellisWM.app
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💎 Another gem out there! I am running out of time to test all the amazing new stuff that improves my daily life on desktop!!!
You asked, so here it is: DigUp is coming to Windows and Linux 👀 Dropping in a few hours... github.com/ARahim3/DigUp
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Replying to @stephenjayakar
just do it bro its several prompts away!
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