Simon Willison’s Weblog

13th September 2023

None

TIL Using llama-cpp-python grammars to generate JSON — [llama.cpp](https://github.com/ggerganov/llama.cpp) recently added the ability to control the output of any model using a grammar.

Posted 13th September 2023 at 3:36 am

Recent articles

Battle Drones - a vibe coded RTS with audio-based multiplayer - 20th October 2026
Hello Python 3.15, goodbye 3.10, and now I can use 3.11 - 12th October 2026
A new feature for my blog, built using my voice - 9th October 2026
Claude Haiku 5.5 - 7th October 2026

This is a beat by Simon Willison, posted on 13th September 2023.

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe