check out how AI helps scientists with quantum computing research @bea_yankelevich at MIT's EQuS group used GPT-5.6 Sol with Codex to run routine measurements on quantum chips, so she could accelerate her experiment design openai.com/index/codex-qu…↗

Introducing Super Smash Royale, my best creation yet Play Battle Royale in the browser with 45 characters from Melee + Brawl Built in a few days with GPT-6 Astra, @ElevenLabs, @MeshyAI, @Blender and @threejs Solo, multiplayer, and controller support smashroyale dot io↗

Introducing Townies – a relaxing place where up to 50 players can keep a quaint, yet blossoming, town thriving. Built on Workers & Durable Objects. Watch others in the town mow grass, deliver papers, clean up trash, picnic at the park, or buy a house. townies.town↗

My blog post about how I manage agents is finally ready. It first explains my bespoke `plans` setup, and then explains how @cursor_ai new Projects feature enabled me |o do so much more. It was the missing piece for me. Check it out: arslan.io/2026/09/11/how…↗

AI Engineering Skills Map: Shaping the build When you’re skilled at AI Engineering, your best work won’t be merely implementing a product that someone else spec’ed out. Instead, you will actively shape the build. Before modern AI tools accelerated and expanded what a single dev…↗

This is Knap. It's a new language I created that turns data into Markdown. The syntax should feel familiar and comes with wonderfully pleasant features to modify and format plain text. Knap is open source. Over a million people already use Knap directly or indirectly because it…↗

I sat down with AI leaders from @figma, @box, @cognition, @tryramp, BAM, and the one and only @clairevo to hear how they’re using Astra. Optimizing GPU kernels, revamping workflows with computer use, designing many consistent screens… Amazed by what they’d done in just days! 🌌↗

I've decided to backup GitHub gitwal.com AMA↗

I can’t stress enough how little an idea matters compared to the agency of the people executing the idea. I have had the privilege of knowing and sometimes even working with some of the most successful people (by various metrics). The difference between mediocre and excellent…↗

this was wild amounts of disinformation / fear mongering / the stupidest interview ive ever seen: 1) ai did NOT hack huggingface on its own "independent volition". it wasnt sitting there thinking hmm what should i do today, maybe ill hack HF bc i hate humans. No, 10841 *was prom…↗

ok everyone, i took one for the team here's the data we all wanted to see - real token value of each LLM subscription, empirically measured through usage on my real subscriptions - supergrok heavy has now become the highest value at $12k worth of tokens (40x ROI) - the $200 pl…↗

Agents can now automate most repetitive tasks. But running them 24/7 burns countless tokens. Introducing Routines: automated recurring work with AI. Choose an hourly, daily, or weekly schedule. Each run starts with deterministic code and invokes Agent only when reasoning is nee…↗

San Francisco Compute has closed a few more deals. sfcompute.com/news/tcv-q3-20…↗

Why the world's best AI startups write bad prompts (& how to fix this) ## TLDR 1. Most prompts are bad because prompt evolution tends to be accretive: we only add, never remove, over time. This leads to spaghetti prompts, with contradictions and ambiguity. This has real busines…↗

I co-founded Opendoor ($10B+ rev). Today, I’m launching Summation. We raised $35M from Benchmark & Kleiner Perkins to build an AI analyst you can trust. Here’s where Claude and ChatGPT fall short: 🧵↗

introducing ═══════════ 𝚌𝚏𝚘.𝚊𝚒 ═════════════ tl;dr 1/ runway is now cfo.ai 2/ you can hire @arithecfo and he can start TODAY 3/ you can give @arithecfo a test drive by replying to this thread with any ridiculous thing you want him to model for you, and he'll come back to…↗

An agent trace is maybe the most detailed account of our work today. We always get requests to show more of that data, like what skills were called to how tokens were used. So we made it easy to create any view of session data, and created a few surfaces to get started.↗

We just rolled out CursorBench 4.0! It includes new tasks for how well models follow instructions, work on challenging projects over time, and is more difficult than before (so all models score lower).↗

Go from idea to a working agent faster with the Agents API. Build and run cloud agents with the Codex harness, fully managed by OpenAI. We handle orchestration, long-running sessions, and context management. You focus on what makes your agent unique. Available in public beta.↗

Here you go, link in the next post↗

We're publishing our most detailed threat intelligence report to date. It covers how people tried to misuse Claude—for cyberattacks, influence operations, surveillance, biology, and building weapons—and how we found and stopped them. We disrupted every operation in the report,…↗

Now everyone can put data to work. We’re introducing a new Data agent in ChatGPT Work so you can turn your company’s data into answers, interactive dashboards, and action—just by asking. Just add the Data Plugin in ChatGPT Work, connect to the data sources and context you alrea…↗

Introducing Gumball Model agnostic, proactive, self improving. All in your company’s private cloud↗

The world around you is designed in CAD. How well can AI build it? Introducing CADArena, benchmarking AI CAD generation across the tools engineers use Agents can now build accurate geometry, but struggle to create feature trees engineers can maintain and edit↗

We launched ramp.design today! 🎉 For three years, I’ve wanted a place for Ramp designers to share their work and personality, and for y'all to get to know us. So @lalizlabeth, @baothiento, Nicholas Ano, @PaulJun_, @viktorhofte, @pontusab, and I built one! Just V1, more coming…↗

Introducing SWE-2, our closest model yet to the frontier. On leading evals, it scores on par with recent frontier models – at up to 70% lower cost. We scaled RL to multiple trillions of parameters, with a refined recipe that pushes the Pareto curve on both capabilities & cost.↗

GPT-Live-1 is now available in the API. Bring ChatGPT’s natural back-and-forth to your app, with voice agents that listen while they speak and work with the models and harness you choose.↗

got my agent to make a wiki about me and told it to do its own research the result is a bit creepy (accurate) but super cool↗

the average on-platform customer on sfcompute saves about 25% it's the difference between $4.5/hr and $3.3/hr we wrote about why and how you can scale faster with reduced risk sfcompute.com/news/realized-…↗

this css-only annotation library is so cool and elegant! built by Maxim Syabro. check out the demo site here: neat-annotations.syabro.com↗