
In tech and business, as in life, the only constant is change. Weekly teardown of the biggest news in tech and finance, with some wisdom along the way.
| Platform | Pricing | Only free issues | Publishes | Daily | |
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| Issues | 361 | Founded | 3 years ago | Last Issue | 2 days ago |
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Yesterday Anthropic launched Claude Opus 5.5, and the immediate conclusion from the internet was that Anthropic is so back. The leaderboard horse race is entertaining but the bigger story is the collapsing price of intelligence even as it k...
The open-weight juggernaut keeps rolling.
Vercel reported that open-weight models went from 7% of AI Gateway token volume in December 2025 to 56% in August 2026. By September 18, the live leaderboard showed open models at ~78% of token vo...
For most of the chatbot era, AI safety had one very convenient feature: The model could say something stupid, but a human usually had to turn the stupidity into an action. That buffer is disappearing as AI becomes more agentic.
Last week,...
Thinking more about the Personal AI assistant market. There are still a surprising number of unresolved product, economic and strategic questions here, and I keep coming back to a handful that I think will shape how this market develops....
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The writers behind this newsletter.
Reformed hedge fund investor, current venture capitalist, and lifelong student of business. Partner at Bain Capital Ventures. Previously: Coatue, Goldman Sachs.
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