Simon Willison’s Weblog

The July edition of my sponsors-only monthly newsletter is out. If you are a sponsor (or if you start a sponsorship now) you can access it here.

This month:

• Accidental cyberattacks by OpenAl and Anthropic models under test
• GPT-5.6 Sol, Terra, and Luna
• Claude Opus 5
• Kimi K3 and DeepSeek-V4-Flash-0731
• Open letters about Al development
• A fireside chat and a podcast
• Reigniting my interest in MCP
• Other model releases
• My projects
• What I'm using at the moment

Here's a copy of the June newsletter as a preview of what you'll get. Pay $10/month to stay a month ahead of the free copy!