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Simon Willison's Weblog

Release: datasette 1.0a29 Thoughts on GitLab’s workforce reduction A quote from James Shore Your AI Use Is Breaking My Brain TIL: Using LLM in the shebang line of a script Learning on the Shop floor A quote from New York Times Editors’ Note A quote from Andrew Quinn A quote from Luke Curley Release: llm-gemini 0.31 Tool: Big Words Behind the Scenes Hardening Firefox with Claude Mythos Preview Notes on the xAI/Anthropic data center deal Tool: GitHub Repo Stats Live blog: Code w/ Claude 2026 Vibe coding and agentic engineering are getting closer than I’d like Release: datasette-referrer-policy 0.1 Release: datasette-llm 0.1a7 Granite 4.1 3B SVG Pelican Gallery A quote from Andy Masley April 2026 newsletter Research: TRE Python binding — ReDoS robustness demo Tool: Redis Array Playground A quote from Anthropic Sightings iNaturalist Sightings Codex CLI 0.128.0 adds /goal Our evaluation of OpenAI's GPT-5.5 cyber capabilities Quoting Andrew Kelley We need RSS for sharing abundant vibe-coded apps
Release: llm-echo 0.5a0
2026-05-05 · via Simon Willison's Weblog

5th May 2026

Release llm-echo 0.5a0 — Debug plugin for LLM providing an echo model

  • New -o thinking 1 option to help test against LLM 0.32a0 and higher.

This plugin provides a fake model called "echo" for LLM which doesn't run an LLM at all - it's useful for writing automated tests. You can now do this:

uvx --with llm==0.32a1 --with llm-echo==0.5a0 llm -m echo hi -o thinking 1

This will fake a reasoning block to standard error before returning JSON echoing the prompt.

Posted 5th May 2026 at 1:31 am

This is a beat by Simon Willison, posted on 5th May 2026.

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