<h4>Open letters about AI development</h4> <p><em>I wrote this summary of the past few weeks of open letters as a section of <a href="https://simonwillison.net/2026/Aug/2/july-newsletter/">my sponsors-only newsletter</a…
New models reset the capability and price-performance frontier. Teams re-evaluate what to build on whenever a launch shifts what's possible per dollar.
Summaries are aggregated for information only — follow the source link for the full story. Demo entries are illustrative.