Simon Willison's Recent LinkedIn Posts

Things we learned about LLMs in 2024 Here's the table of contents for my review of 2024 in Large Language Models - I summarized the key themes and pivotal moments from a very busy year https://lnkd.in/gDY4pNeH

I see a lot of complaints about untested AI slop in pull requests. Submitting those is a dereliction of duty as a software engineer: Your job is to deliver code you have proven to work

I've had preview access to GPT-5 for a couple of weeks, so I have a lot to say about it. Here's my first post, focusing just on core characteristics, pricing (it's VERY competitively priced) and interesting details from the GPT-5 system card

Chinese AI lab Z.ai (previously called Zhipu AI) released two new MIT licensed open weight LLMs yesterday - GLM-4.5 and GLM-4.5 Air - and they are very impressive. Here are my initial impressions formed against their hosted models: https://lnkd.in/gQg-9WdM ... and then I got a 3 bit quantized MLX version running on…

I see a lot of complaints about untested AI slop in pull requests. Submitting those is a dereliction of duty as a software engineer: Your job is to deliver code you have proven to work

Over the past two years I've built more than 150 little "HTML tools" - single page interactive HTML+JavaScript utilities that do one useful thing. Almost all of them were vibe-coded with the assistance of Claude or ChatGPT or Gemini or Claude Code or Codex CLI I wrote about the patterns I've discovered along the w…