Peter Hebert

@drew_bent The Visualizer tool is super cool, Claude just surprised me by making two (and happily explained how it did that.) Question: is there a way to export them to save/share? When I use the "download" button, there are no styles and the SVG is just black rectangles and text.

It's time to go beyond the chat interface in AI. Claude now creates interactive charts and diagrams directly in the conversation. Artifacts was v1. This is v2. We're finding it especially powerful for learning use cases.

@KLieret Just saw this happen, too, but in the thought summary of the ChatGPT web app, with 5.2 Pro. Unexpected...

Evaluating GPT-5.2 medium reasoning on SWE-bench. First action: ls -ლა ?? Those are Georgian characters. Then in the next step it corrects itself to ls -la. What's going on. Didn't see that with GPT-5.1, exact same setup.

@simonw How do you think models get better at the Pelican? Are specialized humans building higher quality SVG training data for this purpose, or is it emergent behavior?

My notes on OpenAI's gpt-5-codex model, now available via their API - I upgraded my llm-openai-plugin to handle it and had GPT-5-Codex itself implement tool support for that plugin simonwillison.net/2025/Sep/23/gp…