Simon Willison’s Weblog

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Saturday, 3rd October 2026

Sighting 9:35 AM – 9:58 AM — Alpaca, Red-shouldered Hawk, in San Mateo County, CA, US
Alpaca
Alpaca
Alpaca
Alpaca
Red-shouldered Hawk
Red-shouldered Hawk

I just sent the September edition of my sponsors-only monthly newsletter. If you are a sponsor (or start a sponsorship now) you can access it here.

This month:

  • More Fable class models
  • A pricing war
  • 3D graphics, Blender, and pixel art
  • LLMs come for mathematics
  • So many more accidental cyberattacks
  • The vulnapocalypse comes for Datasette
  • What I'm using right now
  • My software releases this month
  • 2026 in LLMs (so far)

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

# 10 pm / newsletter

We’re going to need default hard budget caps on pretty much everything

Here’s a product feature which the world is going to need a whole lot more of over the coming months and years: default hard budget caps. I’m talking about the feature of pay-by-usage services and APIs that lets you say “after $X/month, cut this thing off and return errors”. These need to be hard limits. Soft caps, “after $X/month, send me a warning email”, will not cut it.

[... 505 words]

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