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4th May 2026
I just sent out the April edition of my sponsors-only monthly newsletter. If you are a sponsor (or if you start a sponsorship now) you can access it here.
In this month's newsletter:
- Opus 4.7 and GPT-5.5, both with price increases
- Claude Mythos and LLM security research
- ChatGPT Images 2.0
- More model releases
- Other highlights from my blog
- What I'm using, April 2026 edition
Here's a copy of the March newsletter as a preview of what you'll get. Pay $10/month to stay a month ahead of the free copy!
Posted 4th May 2026 at 10:38 pm
Recent articles
- LLM 0.32a0 is a major backwards-compatible refactor - 29th April 2026
- Tracking the history of the now-deceased OpenAI Microsoft AGI clause - 27th April 2026
- DeepSeek V4 - almost on the frontier, a fraction of the price - 24th April 2026
This is a note by Simon Willison, posted on 4th May 2026.
newsletter 18Monthly briefing
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