web-edit 0.1a2
Simon Willison shipped web-edit 0.1a2 with clipboard copy while testing DeepSeek 4.1 Flash pelican prompts.
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23 stories, newest first · one card per story
Stories tagged #simon-willison
LaTeX renderer
Simon Willison covers a LaTeX renderer inspired by Tiny Little Office's URL documents and agent llms.txt.
llm-gemini 0.35
llm-gemini 0.35 adds Gemini 4 Argon, priced at $2 and $10 per million tokens.
web-edit 0.1a1
Simon Willison released web-edit 0.1a1 with optimizations written by Claude Opus 5.5.
A new feature for my, blog built using my voice
Simon Willison shipped a blog Newsletters index built almost entirely by voice using ChatGPT Codex.
ttok 1.0
Simon Willison releases ttok 1.0, switching the default tokenizer from GPT-4 to the GPT-5 family.
llm-openai-decisions 0.1a0
Simon Willison released llm-openai-decisions 0.1a0, a plugin for OpenAI's new Decisions API.
We're going to need default hard budget caps on pretty much everything
Simon Willison says APIs need default hard budget caps as AI agents can trigger costly usage.
Quoting @joedaroo
A developer says sudden jumps in models’ cyber and swarming abilities outpaced security culture.
2026 in LLMs (so far)
Simon Willison's WeAreDevelopers keynote surveys 2026 LLM trends, starting with Claude Opus 4.5 and GPT-5.1.
commit-rewriter 0.2
commit-rewriter 0.2 adds support for rewriting commits on non-default git branches.
SF October 14th: A Birds of a Feather Session on Agentic Engineering
Simon Willison and Jesse Vincent will host an October 14 San Francisco meetup on agentic engineering experiments.
llm-typesafe 0.1a0
Simon Willison released llm-typesafe 0.1a0, a plugin for TypeSafe AI's Jev model.
MCP was always a bad idea?
Simon Willison argues MCP still matters for controlled, auditable agent access to external services.
How To Write With An LLM
Simon Willison endorses Thomas Ptacek's rules for using LLMs as copyeditors rather than ghostwriters, banning suggested phrasing.
Gemini Live audio
Google released Gemini 3.8 Live speech-to-speech models; Simon Willison built a library-free browser web UI for real-time voice conversations with them.
Quoting Laurie Voss
Laurie Voss argues AI collapses code-writing and review costs, leaving product discovery and precise definition as the core of software engineering.
commit-rewriter 0.1
Simon Willison released commit-rewriter 0.1, a tool that rewrites git commit messages from the first edited commit, with a timestamped revert branch.
Generating running routes with GPT-6 Astra and ChatGPT Work
Simon Willison used ChatGPT Work with GPT-6 Astra to generate 5K/10K running loops from OpenStreetMap data, noting the agent's executed code was not visible.
Feeling sad about AI
Simon Willison argues developers disheartened by AI coding agents should move past existential crisis and refocus on broader engineering problems.
.blend URL Viewer
Simon Willison demos a .blend URL viewer built with GPT-6 Astra in Codex and ChatGPT Images 2.5 generating Blender models.
Quoting Terence Tao
Terence Tao warns AI agents racing to solve rumored open problems may incentivize researchers to hide directions, damaging open science.
August newsletter is out
Simon Willison published his sponsors-only August newsletter covering OpenAI's accidental cyberattacks, Claude auto mode, one-shot game generation, and recent model releases.