<p><strong>Release:</strong> <a href="https://github.com/simonw/llm-gemini/releases/tag/0.31">llm-gemini 0.31</a></p> <blockquote><ul><li><code>gemini-3.1-flash-lite</code> is <a href="https://cloud.google.com/blog/products/ai-machine-learning/gemini-3-1-flash-lite-is-now-generally-available">no longer a preview</a>. </li></ul></blockquote><p>Here's my write-up of the <a href="https://simonwillison.net/2026/Mar/3/gemini-31-flash-lite/">Gemini 3.1 Flash-Lite Preview model</a> back in March. I don't believe this new non-preview model has changed since then.</p> <p>Tags: <a href="https://simonwillison.net/tags/llm-release">llm-release</a>, <a href="https://simonwillison.net/tags/gemini">gemini</a>, <a href="https://simonwillison.net/tags/llm">llm</a>, <a href="https://simonwillison.net/tags/google">google</a>, <a href="https://simonwillison.net/tags/generative-ai">generative-ai</a>, <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/llms">llms</a>

<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/big-words">Big Words</a></p> <p>I'm using my <a href="https://simonwillison.net/2026/Feb/25/present/">vibe coded macOS presentations tool</a> to put together a talk, and I wanted to add a slide with some text on it. The tool only accepts URLs, so I <a href="https://github.com/simonw/tools/pull/279">put together</a> a quick page that accepts query string arguments and turns them into a simple slide.</p><p>Here's an example: <a href="https://tools.simonwillison.net/big-words?text=simonwillison.net&amp;gradient=1&amp;size=9.5">https://tools.simonwillison.net/big-words?text=simonwillison.net&amp;gradient=1&amp;size=9.5</a></p><p>Double click or double tap the page to access a form for modifying the different options.</p><p><img alt="Screenshot of a slide editing tool showing a slide on the left with &quot;simonwillison.net&quot; in heavy white sans-serif text on a black-to-blue gradient background, and a &quot;Slide settin

<p><strong><a href="https://hacks.mozilla.org/2026/05/behind-the-scenes-hardening-firefox/">Behind the Scenes Hardening Firefox with Claude Mythos Preview</a></strong></p>Fascinating, in-depth details on how Mozilla used their access to the Claude Mythos preview to locate and then fix hundreds of vulnerabilities in Firefox:</p><blockquote><p><strong>Suddenly, the bugs are very good</strong></p><p>Just a few months ago, AI-generated security bug reports to open source projects were mostly known for being unwanted slop. Dealing with reports that look plausibly correct but are wrong imposes an asymmetric cost on project maintainers: it’s cheap and easy to prompt an LLM to find a “problem” in code, but slow and expensive to respond to it.</p><p>It is difficult to overstate how much this dynamic changed for us over a few short months. This was due to a combination of two main factors. First, the models got a lot more capable. Second, we dramatically improved our techniques for <em>harnessi

<p>There weren't a lot of big new announcements from Anthropic at yesterday's Code w/ Claude event, but the biggest by far was the deal they've struck with SpaceX/xAI to use "all of the capacity of their Colossus data center".</p><p>As I mentioned in my <a href="https://simonwillison.net/2026/May/6/code-w-claude-2026/">live blog of the keynote</a>, that's the one with the <a href="https://www.politico.com/news/2025/05/06/elon-musk-xai-memphis-gas-turbines-air-pollution-permits-00317582">particularly bad environmental record</a>. The gas turbines installed to power the facility initially ran without Clean Air Act permits or pollution control devices, which they got away with by classifying them as "temporary". Credible reports link it to increases in hospital admissions relating to low air quality.</p><p>Andy Masley, one of the most prolific voices pushing back against misleading rhetoric about data centers (see <a href="https://blog.andymasley.com/p/the-ai-water-issue-is-fake">The AI

<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/github-repo-stats">GitHub Repo Stats</a></p> <p>One of the things I always look for when evaluating a new GitHub repository is the number of commits it has... but that number isn't visible on GitHub's mobile site layout. I built this tool to fix that, using this prompt:</p><blockquote><p><code>Given a GitHub repo URL or foo/bar repo ID show information about that repo absorbed via wither REST or graphql CORS fetch() including the number of commits in the repo and other useful stats</code></p></blockquote><p>Example output for <a href="https://tools.simonwillison.net/github-repo-stats?repo=simonw%2Fdatasette">simonw/datasette</a> and <a href="https://tools.simonwillison.net/github-repo-stats?repo=simonw%2Fllm">simonw/llm</a>.</p> <p>Tags: <a href="https://simonwillison.net/tags/github">github</a></p>

<p>I'm at Anthropic's Code w/ Claude event today. Here's my live blog of the morning keynote sessions.</p> <p>Tags: <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/generative-ai">generative-ai</a>, <a href="https://simonwillison.net/tags/llms">llms</a>, <a href="https://simonwillison.net/tags/anthropic">anthropic</a>, <a href="https://simonwillison.net/tags/claude">claude</a>, <a href="https://simonwillison.net/tags/claude-code">claude-code</a>, <a href="https://simonwillison.net/tags/live-blog">live-blog</a></p>

<p>I recently talked with Joseph Ruscio about AI coding tools for Heavybit's High Leverage podcast: <a href="https://www.heavybit.com/library/podcasts/high-leverage/ep-9-the-ai-coding-paradigm-shift-with-simon-willison">Ep. #9, The AI Coding Paradigm Shift with Simon Willison</a>. Here are some of my highlights, including my disturbing realization that vibe coding and agentic engineering have started to converge in my own work.</p><p>One thing I really enjoy about podcasts is that they sometimes push me to think out loud in a way that exposes an idea I've not previously been able to put into words.</p><h4 id="vibe-coding-and-agentic-engineering-are-starting-to-overlap">Vibe coding and agentic engineering are starting to overlap</h4><p>A few weeks after vibe coding was first coined I published <a href="https://simonwillison.net/2025/Mar/19/vibe-coding/">Not all AI-assisted programming is vibe coding (but vibe coding rocks)</a>, where I firmly staked out my belief that "vibe coding" is

<p><strong>Release:</strong> <a href="https://github.com/datasette/datasette-referrer-policy/releases/tag/0.1">datasette-referrer-policy 0.1</a></p> <p>The OpenStreetMap tiles on the Datasette <a href="https://datasette.io/global-power-plants/global-power-plants">global-power-plants demo</a> weren't displaying correctly. This turned out to be caused by two bugs.</p><p>The first is that the CAPTCHA <a href="https://github.com/simonw/datasette-turnstile">I added</a> to that site a few weeks ago was triggering for the <code>.json</code> fetch requests used by the map plugin, and since those weren't HTML the user was not being asked to solve them. Here's <a href="https://github.com/simonw/datasette.io/commit/23a1c8596b75b2094db46035a3b4280109fb3df3">the fix</a>.</p><p>The second was that OpenStreetMap quite reasonably <a href="https://wiki.openstreetmap.org/wiki/Referer">block tile requests</a> from sites that use a <code>Referrer-Policy: no-referrer</code> header.</p><p>Datasette does th

<p><strong><a href="https://andonlabs.com/blog/ai-cafe-stockholm">Our AI started a cafe in Stockholm</a></strong></p>Andon Labs previously <a href="https://andonlabs.com/blog/andon-market-launch">started an AI-run retail store</a> in San Francisco. Now they're running a similar experiment in Stockholm, Sweden, only this time it's a cafe.</p><p>These experiments are interesting, and often throw out amusing anecdotes:</p><blockquote><p>During the first week of inventory, Mona ordered 120 eggs even though the café has no stove. When the staff told her they couldn’t cook them, she suggested using the high-speed oven, until they pointed out the eggs would likely explode. She also tried to solve the problem of fresh tomatoes being spoiled too fast by ordering 22.5 kg of canned tomatoes for the fresh sandwiches. The baristas eventually started a “Hall of Shame”, a shelf visible to customers with all the weird things Mona ordered, including 6,000 napkins, 3,000 nitrile gloves, 9L coconut milk

<p><strong>Release:</strong> <a href="https://github.com/datasette/datasette-llm/releases/tag/0.1a7">datasette-llm 0.1a7</a></p> <blockquote><ul><li>Mechanism for <a href="https://github.com/datasette/datasette-llm/blob/main/README.md#configuration">configuring default options</a> for specific models.</li></ul></blockquote><p>Part of Datasette's evolving support mechanism for plugins that use LLMs. It's now possible to configure a model with default options, e.g. to say all <a href="https://github.com/datasette/datasette-enrichments-llm">enrichment</a> operations should use a specific model with temperature set to 0.5.</p> <p>Tags: <a href="https://simonwillison.net/tags/llm">llm</a>, <a href="https://simonwillison.net/tags/datasette">datasette</a></p>

<p><strong>Release:</strong> <a href="https://github.com/simonw/llm-echo/releases/tag/0.5a0">llm-echo 0.5a0</a></p> <blockquote><ul><li>New <code>-o thinking 1</code> option to help test against <a href="https://llm.datasette.io/en/latest/changelog.html#a0-2026-04-28">LLM 0.32a0</a> and higher.</li></ul></blockquote><p>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:</p><pre><code>uvx --with llm==0.32a1 --with llm-echo==0.5a0 llm -m echo hi -o thinking 1</code></pre><p>This will fake a reasoning block to standard error before returning JSON echoing the prompt.</p> <p>Tags: <a href="https://simonwillison.net/tags/llm">llm</a></p>

<blockquote cite="https://daringfireball.net/2026/05/y_combinators_stake_in_openai"><p>So it’s well known that Y Combinator owns <em>some</em> stake in OpenAI. But how big is that stake? This seems like devilishly difficult information to obtain. I asked around and a little birdie who knows several OpenAI investors came back with an answer: Y Combinator owns about 0.6 percent of OpenAI. At OpenAI’s current <a href="https://openai.com/index/accelerating-the-next-phase-ai/">$852 billion valuation</a>, that’s worth over $5 billion.</p></blockquote><p class="cite">&mdash; <a href="https://daringfireball.net/2026/05/y_combinators_stake_in_openai">John Gruber</a>, Y Combinator’s Stake in OpenAI</p> <p>Tags: <a href="https://simonwillison.net/tags/openai">openai</a>, <a href="https://simonwillison.net/tags/y-combinator">y-combinator</a>, <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/john-gruber">john-gruber</a></p>

<p><strong><a href="https://simonw.github.io/granite-4.1-3b-gguf-pelicans/">Granite 4.1 3B SVG Pelican Gallery</a></strong></p>IBM released their <a href="https://research.ibm.com/blog/granite-4-1-ai-foundation-models">Granite 4.1 family</a> of LLMs a few days ago. They're Apache 2.0 licensed and come in 3B, 8B and 30B sizes.</p><p><a href="https://huggingface.co/blog/ibm-granite/granite-4-1">Granite 4.1 LLMs: How They’re Built</a> by Granite team member Yousaf Shah describes the training process in detail.</p><p>Unsloth released the <a href="https://huggingface.co/unsloth/granite-4.1-3b-GGUF">unsloth/granite-4.1-3b-GGUF</a> collection of GGUF encoded quantized variants of the 3B model - 21 different model files ranging in size from 1.2GB to 6.34GB.</p><p>All 21 of those Unsloth files add up to 51.3GB, which inspired me to finally try an experiment I've been wanting to run for ages: prompting "Generate an SVG of a pelican riding a bicycle" against different sized quantized variants of

<blockquote cite="https://blog.andymasley.com/p/data-center-land-use-issues-are-fake"><p>[...] Between 2000 and 2024, farmers sold in total a Colorado-sized chunk of land all on their own, 77 times all land on data center property in 2028, and grew more food than ever on what was left. None of this caused any problems for US food access.</p><p>And then, in the middle of all this, a farmer in Loudoun County sells a few acres of mediocre hay field to a hyperscaler for ten times its agricultural value, and the response is that we’re running out of farmland.</p></blockquote><p class="cite">&mdash; <a href="https://blog.andymasley.com/p/data-center-land-use-issues-are-fake">Andy Masley</a>, pushing back against the "land use" argument against data center construction</p> <p>Tags: <a href="https://simonwillison.net/tags/ai-ethics">ai-ethics</a>, <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/generative-ai">generative-ai</a>, <a href="https://simo

<p>I just sent out the April edition of my <a href="https://github.com/sponsors/simonw/">sponsors-only monthly newsletter</a>. If you are a sponsor (or if you start a sponsorship now) you can <a href="https://github.com/simonw-private/monthly/blob/main/2026-04-april.md">access it here</a>.</p><p>In this month's newsletter:</p><ul><li>Opus 4.7 and GPT-5.5, both with price increases</li><li>Claude Mythos and LLM security research</li><li>ChatGPT Images 2.0</li><li>More model releases</li><li>Other highlights from my blog</li><li>What I'm using, April 2026 edition</li></ul><p>Here's <a href="https://github.com/simonw/monthly-newsletter-archive/blob/main/2026-03-march.md">a copy of the March newsletter</a> as a preview of what you'll get. Pay $10/month to stay a month ahead of the free copy!</p> <p>Tags: <a href="https://simonwillison.net/tags/newsletter">newsletter</a></p>

<p><strong>Research:</strong> <a href="https://github.com/simonw/research/tree/main/tre-python-binding#readme">TRE Python binding — ReDoS robustness demo</a></p> <p>If it's <a href="https://simonwillison.net/2026/May/4/redis-array/">good enough for antirez</a> to add to Redis I figured Ville Laurikari's <a href="https://github.com/laurikari/tre/">TRE</a> regular expression engine was worth exploring in a little more detail.</p><p>I had Claude Code build an experimental Python binding (it used <code>ctypes</code>) and try some malicious regular expression attacks against the library. TRE handles those much better than Python's standard library implementation, thanks mainly to the lack of support for backtracking.</p> <p>Tags: <a href="https://simonwillison.net/tags/security">security</a>, <a href="https://simonwillison.net/tags/python">python</a>, <a href="https://simonwillison.net/tags/regular-expressions">regular-expressions</a>, <a href="https://simonwillison.net/tags/c">c</a>, <a h

<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/redis-array">Redis Array Playground</a></p> <p>Salvatore Sanfilippo submitted <a href="https://github.com/redis/redis/pull/15162">a PR</a> adding a new data type - arrays - to Redis. </p><p>The new commands are <code>ARCOUNT</code>, <code>ARDEL</code>, <code>ARDELRANGE</code>, <code>ARGET</code>, <code>ARGETRANGE</code>, <code>ARGREP</code>, <code>ARINFO</code>, <code>ARINSERT</code>, <code>ARLASTITEMS</code>, <code>ARLEN</code>, <code>ARMGET</code>, <code>ARMSET</code>, <code>ARNEXT</code>, <code>AROP</code>, <code>ARRING</code>, <code>ARSCAN</code>, <code>ARSEEK</code>, <code>ARSET</code>.</p><p>The implementation is currently available in a branch, so I <a href="https://github.com/simonw/tools/pull/277">had Claude Code for web</a> build this interactive playground for trying out the new commands in a WASM-compiled build of a subset of Redis running in the browser.</p><p><img alt="Screenshot of a Redis command builde

<blockquote cite="https://www.anthropic.com/research/claude-personal-guidance"><p>We used an automatic classifier which judged sycophancy by looking at whether Claude showed a willingness to push back, maintain positions when challenged, give praise proportional to the merit of ideas, and speak frankly regardless of what a person wants to hear. Most of the time in these situations, Claude expressed no sycophancy—only 9% of conversations included sycophantic behavior (Figure 2). But two domains were exceptions: we saw sycophantic behavior in 38% of conversations focused on spirituality, and 25% of conversations on relationships.</p></blockquote><p class="cite">&mdash; <a href="https://www.anthropic.com/research/claude-personal-guidance">Anthropic</a>, How people ask Claude for personal guidance</p> <p>Tags: <a href="https://simonwillison.net/tags/ai-ethics">ai-ethics</a>, <a href="https://simonwillison.net/tags/anthropic">anthropic</a>, <a href="https://simonwillison.net/tags/claude">c

<p><strong><a href="https://simonwillison.net/elsewhere/sighting/">/elsewhere/sightings/</a></strong></p>I have a new camera (a Canon R6 Mark II) so I'm taking a lot more photos of birds. I share my best wildlife photos on <a href="https://www.inaturalist.org/">iNaturalist</a>, and based on yesterday's <a href="https://simonwillison.net/2026/May/1/inat-sightings/">successful prototype</a> I decided to add those to my blog.</p><p><img class="blogmark-image" src="https://static.simonwillison.net/static/2026/beats-sightings.jpeg" alt="Screenshot of a &quot;Sightings&quot; webpage with a search bar and RSS icon, showing &quot;Filters: Sorted by date&quot; and &quot;208 results page 1 / 7 next » last »»&quot;. First entry: SIGHTING 7:51 PM — Acorn Woodpecker, with two photos labeled &quot;Acorn Woodpecker&quot; of black and white woodpeckers with red caps on tree branches, dated 2nd May 2026. Second entry: SIGHTING 10:08 AM – 11:17 AM — Acorn Woodpecker, Western Fence Lizard, Osprey, with

<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/inat-sightings">iNaturalist Sightings</a></p> <p>I wanted to see my <a href="https://www.inaturalist.org">iNaturalist</a> observations - across two separate accounts - grouped by when they occurred. I'm camping this weekend so I built this entirely on my phone using Claude Code for web.</p><p>I started by building an <a href="https://github.com/simonw/inaturalist-clumper">inaturalist-clumper</a> Python CLI for fetching and "clumping" observations - by default clumps use observations within 2 hours and 5km of each other.</p><p>Then I setup <a href="https://github.com/simonw/inaturalist-clumps">simonw/inaturalist-clumps</a> as a <a href="https://simonwillison.net/series/git-scraping/">Git scraping</a> repository to run that tool and record the result to <a href="https://github.com/simonw/inaturalist-clumps/blob/main/clumps.json">clumps.json</a>.</p><p>That JSON file is hosted on GitHub, which means it can be fetched by J

<p><strong><a href="https://github.com/openai/codex/releases/tag/rust-v0.128.0">Codex CLI 0.128.0 adds /goal</a></strong></p>The latest version of OpenAI's Codex CLI coding agent adds their own version of the <a href="https://ghuntley.com/ralph/">Ralph loop</a>: you can now set a <code>/goal</code> and Codex will keep on looping until it evaluates that the goal has been completed... or the configured token budget has been exhausted.</p><p>It looks like the feature is mainly implemented though the <a href="https://github.com/openai/codex/blob/6014b6679ffbd92eeddffa3ad7b4402be6a7fefe/codex-rs/core/templates/goals/continuation.md">goals/continuation.md</a> and <a href="https://github.com/openai/codex/blob/6014b6679ffbd92eeddffa3ad7b4402be6a7fefe/codex-rs/core/templates/goals/budget_limit.md">goals/budget_limit.md</a> prompts, which are automatically injected at the end of a turn. <p><small></small>Via <a href="https://twitter.com/fcoury/status/2049917871799636201">@fcoury</a></small></p>

<p><strong><a href="https://www.aisi.gov.uk/blog/our-evaluation-of-openais-gpt-5-5-cyber-capabilities">Our evaluation of OpenAI&#x27;s GPT-5.5 cyber capabilities</a></strong></p>The UK's AI Security Institute <a href="https://www.aisi.gov.uk/blog/our-evaluation-of-claude-mythos-previews-cyber-capabilities">previously evaluated Claude Mythos</a>: now they've evaluated GPT-5.5 for finding security vulnerability and found it to be comparable to Mythos, but unlike Mythos it's generally available right now. <p>Tags: <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/openai">openai</a>, <a href="https://simonwillison.net/tags/generative-ai">generative-ai</a>, <a href="https://simonwillison.net/tags/llms">llms</a>, <a href="https://simonwillison.net/tags/anthropic">anthropic</a>, <a href="https://simonwillison.net/tags/claude">claude</a>, <a href="https://simonwillison.net/tags/ai-security-research">ai-security-research</a>, <a href="https://simonwill

<blockquote cite="https://lobste.rs/s/ifcyr1/contributor_poker_zig_s_ai_ban#c_cbtxub"><p>It's a common misconception that we can't tell who is using LLM and who is not. I'm sure we didn't catch 100% of LLM-assisted PRs over the past few months, but the kind of mistakes humans make are fundamentally different than LLM hallucinations, making them easy to spot. Furthermore, people who come from the world of agentic coding have a certain <em>digital smell</em> that is not obvious to them but is obvious to those who abstain. It's like when a smoker walks into the room, everybody who doesn't smoke instantly knows it.</p><p>I'm not telling you not to smoke, but I am telling you not to smoke in my house.</p></blockquote><p class="cite">&mdash; <a href="https://lobste.rs/s/ifcyr1/contributor_poker_zig_s_ai_ban#c_cbtxub">Andrew Kelley</a>, Creator of Zig</p> <p>Tags: <a href="https://simonwillison.net/tags/zig">zig</a>, <a href="https://simonwillison.net/tags/llms">llms</a>, <a href="https://si

<p><strong><a href="https://interconnected.org/home/2026/04/29/syndicating-vibes">We need RSS for sharing abundant vibe-coded apps</a></strong></p>Matt Webb:</p><blockquote><p>I would love an RSS web feed for all those various tools and apps pages, each item with an “Install” button. (But install to where?)</p><p>The lesson here is that when vibe-coding accelerates app development, apps become more personal, more situated, and more frequent. Shipping a tool or a micro-app is less like launching a website and more like posting on a blog.</p></blockquote><p>This inspired me to <a href="https://github.com/simonw/simonwillisonblog/pull/665">have Claude</a> add an Atom feed (and icon) to my <a href="https://simonwillison.net/elsewhere/tool/">/elsewhere/tools/</a> page, which itself is populated by content from my <a href="https://tools.simonwillison.net/">tools.simonwillison.net</a> site. <p>Tags: <a href="https://simonwillison.net/tags/atom">atom</a>, <a href="https://simonwillison.net/ta

<p><a href="https://ziglang.org/">Zig</a> has one of the most stringent <a href="https://ziglang.org/code-of-conduct/">anti-LLM policies</a> of any major open source project:</p><blockquote><p>No LLMs for issues.</p><p>No LLMs for pull requests.</p><p>No LLMs for comments on the bug tracker, including translation. English is encouraged, but not required. You are welcome to post in your native language and rely on others to have their own translation tools of choice to interpret your words.</p></blockquote><p>The most prominent project written in Zig may be the <a href="https://bun.com/">Bun</a> JavaScript runtime, which was <a href="https://bun.com/blog/bun-joins-anthropic">acquired by Anthropic</a> in December 2025 and, unsurprisingly, makes heavy use of AI assistance.</p><p>Bun operates its own fork of Zig, and recently <a href="https://x.com/bunjavascript/status/2048427636414923250">achieved a 4x performance improvement</a> on Bun compile after adding "parallel semantic analysis an

<p><strong>Release:</strong> <a href="https://github.com/simonw/llm/releases/tag/0.32a1">llm 0.32a1</a></p> <blockquote><ul><li>Fixed a bug in 0.32a0 where tool-calling conversations were not correctly reinflated from SQLite. <a href="https://github.com/simonw/llm/issues/1426">#1426</a></li></ul></blockquote> <p>Tags: <a href="https://simonwillison.net/tags/llm">llm</a></p>

<p>I just released <a href="https://llm.datasette.io/en/latest/changelog.html#a0-2026-04-28">LLM 0.32a0</a>, an alpha release of my <a href="https://llm.datasette.io/">LLM</a> Python library and CLI tool for accessing LLMs, with some consequential changes that I've been working towards for quite a while.</p><p>Previous versions of LLM modeled the world in terms of prompts and responses. Send the model a text prompt, get back a text response.</p><pre><span class="pl-k">import</span> <span class="pl-s1">llm</span><span class="pl-s1">model</span> <span class="pl-c1">=</span> <span class="pl-s1">llm</span>.<span class="pl-c1">get_model</span>(<span class="pl-s">"gpt-5.5"</span>)<span class="pl-s1">response</span> <span class="pl-c1">=</span> <span class="pl-s1">model</span>.<span class="pl-c1">prompt</span>(<span class="pl-s">"Capital of France?"</span>)<span class="pl-en">print</span>(<span class="pl-s1">response</span>.<span class="pl-c1">text</span>())</pre><p>This made sense when I st

<p><strong>Release:</strong> <a href="https://github.com/simonw/llm/releases/tag/0.32a0">llm 0.32a0</a></p> <p>See <a href="https://simonwillison.net/2026/Apr/29/llm/">the annotated release notes</a>.</p> <p>Tags: <a href="https://simonwillison.net/tags/llm">llm</a></p>

<blockquote cite="https://github.com/openai/codex/blob/66b0781502be5de3b1909525c987643b9e5e407d/codex-rs/models-manager/models.json#L55"><p><code>Never talk about goblins, gremlins, raccoons, trolls, ogres, pigeons, or other animals or creatures unless it is absolutely and unambiguously relevant to the user's query.</code></p></blockquote><p class="cite">&mdash; <a href="https://github.com/openai/codex/blob/66b0781502be5de3b1909525c987643b9e5e407d/codex-rs/models-manager/models.json#L55">OpenAI Codex base_instructions</a>, for GPT-5.5</p> <p>Tags: <a href="https://simonwillison.net/tags/openai">openai</a>, <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/llms">llms</a>, <a href="https://simonwillison.net/tags/system-prompts">system-prompts</a>, <a href="https://simonwillison.net/tags/prompt-engineering">prompt-engineering</a>, <a href="https://simonwillison.net/tags/codex-cli">codex-cli</a>, <a href="https://simonwillison.net/tags/generative-

<blockquote cite="https://twitter.com/mattyglesias/status/2049105745132585161"><p>Five months in, I think I've decided that I don't want to vibecode — I want professionally managed software companies to use AI coding assistance to make more/better/cheaper software products that they sell to me for money.</p></blockquote><p class="cite">&mdash; <a href="https://twitter.com/mattyglesias/status/2049105745132585161">Matthew Yglesias</a>, in a now-deleted Tweet</p> <p>Tags: <a href="https://simonwillison.net/tags/agentic-engineering">agentic-engineering</a>, <a href="https://simonwillison.net/tags/vibe-coding">vibe-coding</a>, <a href="https://simonwillison.net/tags/ai-assisted-programming">ai-assisted-programming</a>, <a href="https://simonwillison.net/tags/ai">ai</a></p>