April 2026 newsletter
The April 2026 edition of a sponsors-only newsletter has been released, featuring updates on AI models and research. Topics include Opus 4.7, GPT-5.5, Claude Mythos, LLM security, and ChatGPT Images 2.0. The newsletter is accessible to sponsors for $10 per month.
- ▪The April 2026 newsletter is available exclusively to sponsors.
- ▪It covers updates on Opus 4.7, GPT-5.5, Claude Mythos, and ChatGPT Images 2.0.
- ▪LLM security research and recent blog highlights are also included.
- ▪A preview of the March newsletter is available to non-sponsors.
- ▪Sponsorship costs $10 per month to access the content.
Opening excerpt (first ~120 words) tap to expand
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!
Excerpt limited to ~120 words for fair-use compliance. The full article is at Simon Willison's Weblog.
Discussion
0 commentsMore from Simon Willison's Weblog
