Simon Willison 12/12/2025

The article details the release of LLM version 0.28, a Python library and command-line tool for working with Large Language Models. Key updates include support for new OpenAI models (gpt-5.1, gpt-5.2 and their chat variants), a custom user-agent for URL fragments, bug fixes for chat fragments and file descriptors, type annotations for OpenAI methods, and a switch to using 'uv' and dependency groups for development to simplify running the test suite.

LLM 0.28

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