For the GPT-5.4 launch, we overhauled our computer use demo to give folks the ability to try out the new features across different use cases. You can test drive a kanban board, hotel booking site, or paint app. Or clone the repo and add your own! Built with Codex™↗

fyi: you can build your own claude cowork style apps with claude agent sdk! i’ll be open sourcing my app this week. i’ve been hacking on it for a while, and i think it’s actually really good! this app format will be the ai app-layer trend of the year. watch for a 4min demo.↗

Just take everything that powers Cursor Agent and put it in a UI that doesn’t look like a code editor. Tons of possibilities here. If you’re an ambitious person looking for an idea I’d pick that idea up and run with it. Huge opportunity to open source it too. Would be a hit.↗

Human feedback for open source LLMs needs to be crowd-sourced, Wikipedia style. It is the only way for LLMs to become the repository of all human knowledge and cultures. Who wants to build the platform for this?↗