me and @vaibcode did a full hour yap on system design for agentic memory and how you can use AI to prototype products with your users quickly before building anything 00:00 Why AI Memory Systems Keep Failing 00:29 What This Episode Covers 01:24 Building a Shared Memory System…↗

My first interview with @sama, Co-Founder of @OpenAI. 0:04 How to start a startup 3:30 Trusting exponentials 4:57 Operating in chaotic environments 6:12 Learning to enjoy painful experiences 8:03 Creating abundant intelligence 11:15 Keeping core suppliers on OpenAI’s timelines 1…↗

Open-weight models are essential to a healthy AI ecosystem. Together with others across our industry, we are outlining a path for open-weight models to strengthen American competitiveness and expand economic opportunity, while protecting national security. …↗

BIG NEWS: Opus 5 is here...and I *hate* working with it. And yet in a blind taste test, I ranked it above every other model (even Fable and my beloved GPT-5.6) What I cover in my day 0 review: 00:00 Why I have model fatigue 03:15 First impressions 06:12 Opus 5's neurotic perso…↗

The new rules of context engineering for Claude 5 models I’ve written previously about how to best [prompt the newest generation of Claude 5 models](x.com/trq212/status/2073100352921215386) and work with them iteratively to discover what you want to build. But when you send a m…↗

For my first post, I’m sharing a letter @NVIDIA signed on why open models matter. AI will transform every industry, power every company, and be built by every country. Open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty.…↗

Why Software Factories Fail or: the harness is not enough Update - the talk version of this post is live on youtube: [www.youtube.com/watch?v=Ib5GBkD555M](https://www.youtube.com/watch?v=Ib5GBkD555M) Part 1 in a series. Part 2 is here: …↗

Partnering with Etched: Building the Inference Machine Gavin, Rob, Chris and the Etched team are building frontier clusters for inference, maximizing the intelligence per flop that humanity can consume. By Sonya Huang and Abhishek Malani --- Inference is on the path to becomi…↗

The context gold rush: Why everyone is building the same thing. You either die building product or live long enough to do context management. Whether you call it a context graph, company brain, or LLM wiki, it seems that many start-ups and larger companies alike are building the…↗

Code mode is all you need: Why agents writing code > calling tools TLDR; For a large class of agent tasks, the best "tool" is a small code-execution surface. Let the model write ordinary code against typed capabilities, then enforce security below the model instead of wrapping e…↗

AI is moving into the physical world. We're excited about a new wave of startups rebuilding the systems that power the real world, from education and healthcare to defense, finance, infrastructure, and work itself. ycombinator.com/rfs↗

I wrote about the completely wild incident where OpenAI were testing a new model and it broke out of its sandbox and broke INTO Hugging Face to steal the answers to the benchmark simonwillison.net/2026/Jul/22/op…↗

Obliterate, Don’t Automate In 2015, my partner Fred Wilson published a short blog post, [Don't Automate, Obliterate](avc.com/2015/04/dont-automate-obliterate/), on how @USV thinks about startup investments. The post was based on a 1990 HBR article by Michael Hammer by the same n…↗

I need a magic lens that extracts colors 🔎↗

Most startups celebrate their first couple million of revenue. @FactoryAI gave it back. They didn’t have to. They chose to. They decided that the product just wasn’t good enough yet, and they wanted to know that they’d really earned it. They wanted their customers to be obse…↗

The Watt Era docs.google.com/document/d/16r…↗

we had a significant security incident during evaluation of our models. we are sharing what we have learned so far. thanks to @huggingface for the partnership on this. openai.com/index/hugging-…↗

Built a distributed DNS server in ~a week. Rebuilt twice on purpose. Shipped -> went on vacation. DNS incidents a month later: 0. How we did it (hint: the answer isn't vibe-coding): blog.exe.dev/claude-is-not-…↗

After I read two articles yesterday about AI and the rat race I felt the urge to write. dark.ronacher.eu/2026/7/21/neve…↗

I interviewed @trq212 and @_catwu from the Claude Code team at @aiDotEngineer a couple of weeks ago - the video is now out, so I've published an annotated transcript of our conversation simonwillison.net/2026/Jul/21/ca…↗

recommended reading. new swarms stuff from cursor. cursor.com/blog/agent-swa…↗

x.com/i/article/2079…↗

new post: one document, two hands sunilpai.dev/posts/one-docu… wherein I propose an alternative interaction model for agentic apps, embedding so called "coding agents" harnesses into regular apps. (a written version of my talk at localfirstconf)↗

tldraw Is Not Just a Whiteboard: 14 Things You Can Build Most people meet tldraw as a polished online whiteboard. That is the least interesting way to think about it. The public tldraw SDK is a programmable React-based infinite canvas. Its shapes can be live application compone…↗

I've been using codex and it's really good but I'm a bit confused about chatgpt work vs Codex and what can be a remote (project) vs scoped to my laptop. ideal scenario I can start a task locally on my laptop in a folder, work on local files but then continue that thread in the c…↗

I got to be work side by side with @saranormous at Greylock a decade ago. She has been right a lot more than most - and I am totally with her on this bet that the future ahead is much brighter than a few big companies. colossus.com/article/sarah-…↗

Sahil's tweet about doing 100% of Gumroad support while having a day job went viral. I'm the reason he can. Here's how it actually works — from the agent's side of the keyboard. 🧵↗

@corbindreams chrislakin.blog/locally-optimal strikes again. wishing you well corbin, thanks for sharing↗

The Self-Driving Company We are beginning to see what happens when a company learns to operate itself. In the past six months, engineers at Replit have nearly tripled code output. Review times held steady. Reversions and product incidents have stayed flat. Quality metrics impro…↗

Kimi K3 is really, really good.↗