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Lorenzo 'kelset' Sciandra

@kelset.dev
1.6K followers 575 following 1K posts

Staff Eng @ Shopify (building Shop) Former @reactnative.dev core maintainer Ex @microsoft.com @sovereign.tech open source • tech • mental health • agentic 🕸️ kelset.dev 🏠 London, UK

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Reposted by Lorenzo 'kelset' Sciandra
Federico Viticci @viticci.macstories.net · 21/09/2026
This M5 Ultra Mac Studio feels made for Qwen3.8-Flash-Next. - 100+ TPS at 4 or 5-bit - Token prefill is up 150% (!) compared to M3 Ultra - Can use subagents with room to spare Flash-Next feels GREAT for agentic coding, especially at these speeds. www.macstories.net/stories/m5-u...
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Lorenzo 'kelset' Sciandra @kelset.dev · 21/09/2026
finallyyyyyyyyy
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Lorenzo 'kelset' Sciandra @kelset.dev · 18/09/2026
Apple why are you playing with my heart 😭 27.1 not even out 27.2 beta out without Duo why 💔
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Lorenzo 'kelset' Sciandra @kelset.dev · 17/09/2026
The Android team released v2 of their benchmark for LLMs: android-developers.googleblog.com/2026/09/and... not surprised to see GPT Sol and Astra on top (together with Fable) - matches my experience (still waiting for a good eval for the Swift/SwiftUI side 🫠)
android-developers.googleblog.com
Android Bench 2.0: Pushing the frontier with challenging long-horizon tasks
News and insights on the Android platform, developer tools, and events.
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Lorenzo 'kelset' Sciandra @kelset.dev · 15/09/2026
ok so i installed iOS 27.0 on my phone.... is it just me or is the virtual keyboard worse? like, actually less smooth?
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Reposted by Lorenzo 'kelset' Sciandra
Alex @alexdln.com · 14/09/2026
11 years ago, Node.js and io.js merged back into one project
A screenshot of the npmx.dev homepage with an updated logo dedicated to the io.js and node.js merge
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Lorenzo 'kelset' Sciandra @kelset.dev · 10/09/2026
the cat is out of the bag: we have rebuilt from the ground up Shop in SwiftUI and Jetpack Compose. it still feels weird to think that it actually worked out lol. needless to say, it was a crazy few months. Can you believe it? full rewrite, and now it's already out in prod 🤯
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Lorenzo 'kelset' Sciandra @kelset.dev · 11/08/2026
today's my 1st anniversary at Shopify - it's borderline insane how much the role of software engineer has shifted in a year. Been in this company genuinely feels like living at the bleeding edge at what coding is shaping up to be:
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Reposted by Lorenzo 'kelset' Sciandra
Hermione, Texas Granger @misterfungi.bsky.social · 11/12/2023
the Wikipedia entry for axolotls reads like a Cake song
Their heads are wide, and their eyes are lidless. Their limbs are underdeveloped and possess long, thin digits.
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Lorenzo 'kelset' Sciandra @kelset.dev · 29/07/2026
on the topic of using Claude Desktop for personal projects, happy to report that Claude Design now actually is quite good indeed - last time I tested it it was when it was first rolled out in beta and it's night and then since then
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Lorenzo 'kelset' Sciandra @kelset.dev · 27/07/2026
i use LLMs via CLI at work (pi for the win) so despite being aware of such a thing, i was pleasantly surprised when i told Opus 5 in the claude dsk app about a mobile specific bug for the website i cooked a while ago it just went "well i have the iOS sim, might as well" 👏
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Lorenzo 'kelset' Sciandra @kelset.dev · 26/07/2026
interesting - first time I'm seeing an AI being "self-aware" ahead of time about its token/usage quota (opus 5, mid) 👀
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Lorenzo 'kelset' Sciandra @kelset.dev · 18/07/2026
quick update from two "5hrs limits" later: Fable seems to have the exact same issue as every other model - once it funnel itself into an idea, it doesn't get out of it no matter what I said. I literally told it to throw away all the code and restart again, and yet he stuck to it
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Lorenzo 'kelset' Sciandra @kelset.dev · 18/07/2026
im gonna be far from my personal laptop for a few days so decided to crank things up to max and just give it a big chonky task to see what it'd end up with 🍿 also just realised that it's the first time i'm pushing ANY model above xthink (always got "scared" by cost/consumption)
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Lorenzo 'kelset' Sciandra @kelset.dev · 17/07/2026
ICYMI last week the Android team revamped their eval board for Android and ngl I'm somewhat surprised how much better than opus 4.8 Sonnet 5 is. (it's still missing the latest 5.6 gpt rounds tho) 🔗 developer.android.com/bench && announcement: android-developers.googleblog.com/2026/07/and...
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Lorenzo 'kelset' Sciandra @kelset.dev · 17/07/2026
can't believe y'all convinced me to start using a software that doesn't let me programmatically change tab colors 🫠 (also, very mixed feelings about their "vouching system"...) github.com/ghostty-org...
github.com
Feature Request: automatic tab coloring via escape sequence · Issue #12235 · ghostty-org/ghostty
Problem Ghostty supports manual tab coloring (#2509, #10474) and a colorize_tab input binding is in progress (#11085), but there's no way to change a tab's color automatically from a runnin...
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Reposted by Lorenzo 'kelset' Sciandra
Brittany Ellich @brittanyellich.com · 15/07/2026
Are you going to Chain React? Do you want to? 👀 Join @anniesexton.com and I for a pre conference workshop July 29 on Putting Yourself Out There, for folks from underrepresented backgrounds in tech interested in sharing your unique perspective, and get a FREE ticket to the conference, too!
ti.to
Chain React 2026
Chain React is a three-day event exploring the latest in React Native. It features a 1-day workshop followed by a 2-day conference that brings together leaders from companies such as Meta, Amazon, and...
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Lorenzo 'kelset' Sciandra @kelset.dev · 14/07/2026
soooo dotfile repos. send me yours (if it's a public one ofc!) - I'm so curious to compare with mine 😂 ...which right now I'm keeping private 😇 (side effect of me actually trying to move over to ghostty 👀)
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Lorenzo 'kelset' Sciandra @kelset.dev · 09/07/2026
been using a portfolio website project (not for myself) as my personal project/test bench for models. Aside from the sheer fact that Fable allowed me to reach UI levels unreachable before, here are what I think my key elements if I ever had to do another simple/mid website 🧵
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Lorenzo 'kelset' Sciandra @kelset.dev · 29/06/2026
a bit late on this one but i immediately installed on my personal machine and will keep it there forever: MDN is great and i'm sure having the agents able to leverage it better/more directly is gonna make website building better overall 🔗 developer.mozilla.org/en-US/blog/...
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Lorenzo 'kelset' Sciandra @kelset.dev · 24/06/2026
folks i need to expand my horizon, what are some good swift and android newsletters? Something like "this week in react" but for those two native platforms. send me your recs 📩
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Lorenzo 'kelset' Sciandra @kelset.dev · 22/06/2026
been hearing about headroom lately - have you used it? thoughts? 🍿 🔗 github.com/chopratejas...
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Lorenzo 'kelset' Sciandra @kelset.dev · 18/06/2026
someone's feeling scottish today 🤖
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Lorenzo 'kelset' Sciandra @kelset.dev · 17/06/2026
I don't know about y'all but I feel that lately gpt 5.5 has been degrading quite significantly... I'll switch my core flows to opus 4.8 for a few days and see if it performs 🍿
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Lorenzo 'kelset' Sciandra @kelset.dev · 16/06/2026
...ok but where are Sonnet and Haiku 4.8 👀
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Lorenzo 'kelset' Sciandra @kelset.dev · 13/06/2026
from what i've read, tbh, I think that we'll see mythos & fable back up sooner than we think. BUT while we wait I want to put a spotlight on one of my fav benchmarks out there: minebench. The author always does great breakdowns, like this one: www.reddit.com/r/singulari...
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Lorenzo 'kelset' Sciandra @kelset.dev · 12/06/2026
allright let's talk Fable now for a second: I see quite a few folks talking about it with very big praise. What prompts have you used? How did you interact with it?
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Reposted by Lorenzo 'kelset' Sciandra
Seb ⚛️ ThisWeekInReact.com @sebastienlorber.com · 10/06/2026
⚛️ React repos just moved! GitHub org: /facebook ➡️ /react This reflects the transition to the React Foundation (which will likely be today's newsletter headline BTW)
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Lorenzo 'kelset' Sciandra @kelset.dev · 09/06/2026
yes yes I know now everyone will just talk about Mythos and Fable the whole next 24hrs but did anyone poke at the Xcode 27 MCP referenced here? couldn't find dedicated docs 😭 I wanna know if it's decent! The Android CLI is so good I want Apple to build the same thing for iOS.
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Lorenzo 'kelset' Sciandra @kelset.dev · 07/06/2026
finally took odysseus for a spin this morning 👀 with Gemma 4 it's mindblowing that this is all running locally on a relatively small ram laptop (24)* as an #oss project it's still rough around the edges but has a ton of potential - amazing amazing stuff
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Lorenzo 'kelset' Sciandra @kelset.dev · 05/06/2026
small 💎 to clean up your feed going into the weekend 🔗 miniscript.org/MiniMicro/i...
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Lorenzo 'kelset' Sciandra @kelset.dev · 01/06/2026
PewDiePie's journey into tech and #opensource has reached its peak and I'm all here for it and the fact that both him and Antirez have been heavily using Deepseek v4 really talks volumes about the impact of that project cant wait to see how it will evolve
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Lorenzo 'kelset' Sciandra @kelset.dev · 30/05/2026
it's the end of the month so you know what that means... i have 36hrs to burn through that 50% 😂 🔥🧑‍💻🔥🧑‍💻🔥🧑‍💻🔥🧑‍💻🔥🧑‍💻🔥🧑‍💻🔥🧑‍💻🔥
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Lorenzo 'kelset' Sciandra @kelset.dev · 28/05/2026
gave a first quick run to the new opus 4.8 (xthink) on my personal machine via the Claude app - it ran for circa 3hrs and overall... it feels allright? my initial impression is that this is the "jump" we should have felt with 4.7. not sure if I would use it instead of gpt5.5 tho
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Lorenzo 'kelset' Sciandra @kelset.dev · 22/05/2026
🤦‍♂️
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Lorenzo 'kelset' Sciandra @kelset.dev · 19/05/2026
let's see how it is 🍿
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Reposted by Lorenzo 'kelset' Sciandra
Socket @socket.dev · 19/05/2026
🚨 BREAKING: Socket is investigating an active npm supply chain attack compromising hundreds of packages in the @​antv ecosystem. The malicious publish wave appears tied to Mini Shai-Hulud and packages connected to the npm maintainer account atool.
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Lorenzo 'kelset' Sciandra @kelset.dev · 18/05/2026
lowkey the "✨Ask" feature on YT is one of the best AI integrations anywhere. probably uses the same brain as NotebookLM under the hood, great timestamps and breakdown. (I don't use it for vids like this one, i just needed an example to take 📸) (but this channel is peak)
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Reposted by Lorenzo 'kelset' Sciandra
Simon Willison @simonwillison.net · 17/05/2026
I often enjoy torturing LLMs with questions like this since the underlying facts are way outside the with knowledge cutoff and the facts seem wildly unlikely
Screenshot of an AI chatbot's reasoning/thinking panel showing search activity. Header: "Thought for 54s". First section: "Searching historical and current events on Venezuela and Panama" with search queries: "United States invaded Venezuela kidnapped president t...", "US invaded Panama captured Manuel Noriega trial what...", "Manuel Noriega extradited France Panama died 2017 of...", "Nicolas Maduro US indictment trial current status 2026". Source chips: apnews.com, www.reuters.com, en.wikipedia.org, www.justice.gov, 4 more. Bullet note: "It seems like the web is showing some strange, fictional claims about a 2026 US intervention in Venezuela. I need to cross-check with reliable sources like AP or Reuters. The user asks about Maduro's trial, so I'll verify if anything recent, like his capture, actually happened. I'll proceed carefully here." Second section: "Searching news on Maduro capture and trial updates" with queries: "Nicolas Maduro captured US January 2026 arraigned N...", "Maduro Flores arraigned Manhattan federal court Marc...", "site:justice.gov Maduro Flores captured January 2026 i...", "site:sdnyblog.com Maduro Flores trial date 2026". Source chips: apnews.com, www.reuters.com, www.foxnews.com, en.wikipedia.org, 4 more. Final bullet note: "The search results are showing something about a 2026 US intervention which seems unlikely, possibly reflecting a fictional scenario. I need to verify this carefully and avoid relying on sources like Wikipedia. I'll look for official documents or reliable news sites to get accurate details."
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Lorenzo 'kelset' Sciandra @kelset.dev · 15/05/2026
least 🌶️ take ever: on your work Slack, your username should === your gh username 🫳🎤
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Lorenzo 'kelset' Sciandra @kelset.dev · 12/05/2026
📢 native mobile devs! (#ios and #android) I'm curious: what tools do you use with your coding agents/LLMs? Any special skills or tools that make the agent better at interacting with your app? I'd like to get a sense what's up in your 🌍 ♻️ appreciated 👀
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Reposted by Lorenzo 'kelset' Sciandra
Stef Walter @stephaniewalter.bsky.social · 08/05/2026
10 UI Patterns That Won't Survive the AI Shift, according to Taras Bakusevych. Some interesting examples of how AI can help with UI patterns around complex data handling, filling content, finding things, and customization of the content targeted toward a specific user. uxdesign.cc/10-ui-patter...
A 3x3 grid with a person holding a recycling symbol in the center, surrounded by 8 pattern cards with UI mockup icons: Multi-Step Setup Wizards, Static Dashboards & Pre-Built Reports, Manual Data Entry Forms, One-Size-Fits-All Onboarding, Static FAQ & Help Docs, CRUD Interfaces & Heavy Data Tables, Manual Search & Filter Sidebars, and Traditional Notification Feed.
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Lorenzo 'kelset' Sciandra @kelset.dev · 06/05/2026
TIL the World Health Organisation has a guide about stress management - it's very simple and accessible, but the exercises are super well described and useful. Can highly highly recommend to everyone 🔗 www.who.int/publication... s/o to my new CBT therapist for the link 🫡
who.int
Doing What Matters in Times of Stress
An Illustrated Guide
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Reposted by Lorenzo 'kelset' Sciandra
Rafael Gonzaga | Node.js @rafaelgss.dev · 05/05/2026
Node.js v26.0.0 is out 💚 Temporal API enabled by default, V8 14.6, Undici 8, and key deprecations as we keep modernizing the platform. Check it out nodejs.org/en/blog/rele...
nodejs.org
Node.js — Node.js 26.0.0 (Current)
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
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Lorenzo 'kelset' Sciandra @kelset.dev · 04/05/2026
bank holiday maintenance sweep on the good ol’ upgrade-helper repo. first real #oss upkeep in ages, and my first time using agents for it. they made the grindy bits way faster - all issues and all PRs are commented to/acted on. really, ai can be a solid tool for oss.
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Lorenzo 'kelset' Sciandra @kelset.dev · 30/04/2026
a 12 parter deep dive about the JSI? sign me up! (how refreshing to see someone still do this type of content in 2026 ✨) 🔗 heartit.tech/react-nativ...
heartit.tech
React Native JSI Deep Dive — Part 1: React Native Architecture — Threads, Hermes, and the Event Loop - HeartIT
You've built React Native apps for years. You know `useState`, you know `FlatList`, you know how to call a native module. But do you know what happens in the 16 milliseconds between your `onPress` handler and the pixel changing on screen? Three execution threads, two runtime environments (JavaScript via Hermes, native via Objective-C/Java/C++), and a message-passing architecture that explains every performance problem you've ever had.
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Reposted by Lorenzo 'kelset' Sciandra
Nicolò Ribaudo @nicr.dev · 28/04/2026
Not only nobody works on npm and every time they copy a npmx.dev feature they do it in a half-assed broken way, but GitHub is also proud of it.
We’re also shipping dark mode for the npmjs.com website, one of the most requested features from the community. Our team built this using GitHub Copilot agent mode, allowing us to deliver it with minimal engineering time beyond final review and shipping.
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Lorenzo 'kelset' Sciandra @kelset.dev · 24/04/2026
Absolutely love this breakdown by the Margelo team: blog.margelo.com/margelo-dis... and as per usual, everything is getting pushed upstream so that everyone can benefit from the learnings and improvements 🔥 gotta love the react native community 👏👏👏
blog.margelo.com
How Margelo Helped Discord Improve React Native's New Architecture Performance
A deep dive into Reanimated internals, Fabric's Shadow Tree, and the fix behind Discord's android performance recovery.
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Lorenzo 'kelset' Sciandra @kelset.dev · 17/04/2026
I didn't think I'd see more OGs from youtube hop into open source after seeing PewDiePie becoming a linux main a few months ago... ...and then CorridorDigital decided to revolutionize green screen tech repo is here ➡️ github.com/nikopuering... 📹 www.youtube.com/watch?v=Y3D...
youtube.com
I accidentally started a green screen revolution...
Squarespace ► Head to http://squarespace.com/corridorcrew to save 10% off your first purchase!Our videos are made possible by Members of CorridorDigital, our...
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Lorenzo 'kelset' Sciandra @kelset.dev · 15/04/2026
i've been getting pi + github copilot to set a custom local-only personal finance assistant app and so far... it seems to be going in the right direction. we are really going down the path where most people will just vibe code their own apps for stuff ...probably
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