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Quoting OpenAI

[...] Work on web and mobile runs in the cloud. Work in the desktop app can also use local files and desktop apps with your permission. At launch, cloud Work conversations do not appear in desktop Work; desktop Work threads and local files remain on that computer.

OpenAI, trying (unsuccessfully) to clarify ChatGPT Work

Tags: openai, chatgpt, ai

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The new GPT-5.6 family: Luna, Terra, Sol

OpenAI's latest flagship model hit general availability this morning, and comes in three sizes: Luna, Terra, and Sol (from smallest to largest). The new models are priced per 1M input/output tokens as Luna $1/$6, Terra $2.50/$15, Sol $5/$30. For comparison, the Claude Opus s...

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llm-meta-ai 0.1

Release: llm-meta-ai 0.1

Let's LLM run prompts against the new muse-spark-1.1 model.

Tags: llm, meta

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llm 0.31.1

Release: llm 0.31.1

  • Fix for a bug with OpenAI Chat Completion endpoints where a tool call with empty arguments could result in a JSON error from some providers. #1521

This bug came up when I was testing llm-meta-ai.

Tags: llm

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Introducing Muse Spark 1.1

Introducing Muse Spark 1.1 Following Muse Spark in April, here's Muse Spark 1.1 - the first Spark model to offer an API. Meta claim significant improvements in agentic tool calling and computer use. There are a lot more details are in the Muse Spark 1.1 Evaluation Report. Th...

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Rewriting Bun in Rust

Rewriting Bun in Rust Jarred Sumner has been promising this blog post (since May 9th) about his Zig to Rust rewrite of Bun for significantly longer than it took him to finish the rewrite. Honestly, it was worth the wait. This is a detailed description of an extremely sophist...

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Introducing GPT‑Live

Introducing GPT‑Live OpenAI finally upgraded the model used by ChatGPT voice mode! I've had preview access for a few weeks in the iPhone app, and the new model is very impressive. It also has the ability to spin off harder tasks to GPT-5.5: For questions that require web se...

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Quoting Kenton Varda

I just declared a moratorium against AI-written change descriptions (e.g. PR and commit messages, also issues/tickets) from my team.

AI was writing change descriptions that were worse than useless to me as I tried to review PRs: outlining details of the code that could easily be seen by looking at the code, but omitting the higher-level framing needed to understand broadly what the code is doing.

Kenton Varda

Tags: kenton-varda, ai-assisted-programming, generative-ai, ai, llms

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sqlite-migrate 0.2

Release: sqlite-migrate 0.2

The version that retires the library, instead implementing a compatibility shim against the new sqlite-utils 4.0 dependency.

Tags: sqlite-utils

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github-code Web Component

Tool: github-code Web Component

An experimental Web Component built using GPT-5.5 and the following prompt:

let's build a Web Component for embedding code from GitHub

<github-code href="https://github.com/simonw/sqlite-ast/blob/437c759129154f05296324a7f82aa1246340dd14/sqlite_ast/parser.py#L9-L18"></github-code>

It takes URLs like that, converts them to https://raw.githubusercontent.com/simonw/sqlite-ast/437c759129154f05296324a7f82aa1246340dd14/sqlite_ast/parser.py, then uses fetch() to fetch them and displays the specified range of lines - with line numbers, no syntax highlighting though

Show me a preview web browser so I can see your work

Here's what it looks like embedded on this page:

Tags: github, web-components, gpt

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sqlite-utils 4.0

Release: sqlite-utils 4.0

See sqlite-utils 4.0, now with database schema migrations for details.

Tags: sqlite-utils

Simon Willison's Weblog Supports Webmention

sqlite-utils 4.0rc4

Release: sqlite-utils 4.0rc4

The last RC before the 4.0 stable release. Mainly implements feedback from a detailed review by Claude Fable 5.

Tags: sqlite-utils, claude-mythos-fable

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sqlite-utils 4.0, now with database schema migrations

This morning I released sqlite-utils 4.0, the 124th release of that project and the first major version bump since 3.0 in November 2020. In addition to some small but significant breaking changes (described in this upgrade guide), this version introduces three major features...

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tencent/Hy3

tencent/Hy3 New Apache 2.0 licensed model from Tencent in China: Hy3 is a 295B-parameter Mixture-of-Experts (MoE) model with 21B active parameters and 3.8B MTP layer parameters, developed by the Tencent Hy Team. Following the Hy3 Preview launch in late April, we gathered fe...

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sqlite-utils 4.0rc3

Release: sqlite-utils 4.0rc3

I hoped to release sqlite-utils 4.0 stable this weekend, but as I worked through the backlog of issues and PRs with a combination of Claude Fable 5 and GPT-5.5 the changelog since rc2 kept getting bigger.

The biggest new feature is support for introspecting and creating compound foreign keys - a feature that involves a subtle breaking change to table.foreign_keys and hence needed to land for the 4.0 stable release.

sqlite-utils also now follows SQLite's convention for case insensitive column names, which turned out to touch a bunch of different places at once.

Tags: projects, sqlite, sqlite-utils, annotated-release-notes, gpt, claude-mythos-fable

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sqlite-utils 4.0rc2

Release: sqlite-utils 4.0rc2

See sqlite-utils 4.0rc2, mostly written by Claude Fable (for about $149.25).

Simon Willison's Weblog Supports Webmention

sqlite-utils 4.0rc2, mostly written by Claude Fable (for about $149.25)

I wrote about the sqlite-utils 4.0rc1 release a couple of weeks ago. Since we only have Claude Fable on our Max subscriptions for a few more days, I decided to see if it could help me get to a 4.0 stable release that I felt truly comfortable about, since I try to keep to Sem...

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Building a World Map with only 500 bytes

Building a World Map with only 500 bytes

Iwo Kadziela (assisted by Codex) figured out a way to generate a credible ASCII world map using 445 bytes of data:

A map of the world rendered as black asterisk ASCII characters, it looks very good

The key trick is to use deflate compression, which is then wired together using this neat snippet of JavaScript. I didn't know you could use fetch() with data: URIs like this:

fetch('data:;base64,1ZpLsgIxCEXnrM...==').then(
  r => r.body.pipeThrough(new DecompressionStream('deflate-raw'))
).then(
  s => new Response(s).text()
).then(
  t => b.innerHTML = '<pre style=font-size:.65vw>' + t
)

Via Hacker News

Tags: ascii-art, javascript

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Better Models: Worse Tools

Better Models: Worse Tools Armin reports on a weird problem he ran into while hacking on Pi: The short version is that newer Claude models sometimes call Pi’s edit tool with extra, invented fields in the nested edits[] array. And not Haiku or some small model: Opus 4.8. The...

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Open Source AI Gap Map

Open Source AI Gap Map Current AI is "a global partnership building a public option for AI", founded as a non-profit at the AI Action Summit in Paris in February 2025 and backed by serious capital ($400m already committed). They launched their Gap Map a couple of days ago - ...

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Quoting Josh W. Comeau

I just launched my third course, Whimsical Animations, and so far, it’s on track to sell roughly ⅓ as many copies as a typical course launch. It’s a similar story with my two existing courses. Sales are down significantly from last year. There are likely a lot of reasons fo...

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Fable's judgement

One of the most interesting tips I got from the Fireside Chat I hosted with Cat Wu and Thariq Shihipar from the Claude Code team at AIE on Wednesday was to let Fable (and to a certain extent Opus) use their own judgement rather than dictating how they should work. The exampl...

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June 2026 newsletter

The June edition of my sponsors-only monthly newsletter is out. If you are a sponsor (or if you start a sponsorship now) you can access it here.

This month:

  • Claude Fable 5, GPT-5.6, and US export restrictions
  • GLM-5.2 is the new best open weights model
  • Tokenmaxxing is so over
  • Datasette Apps
  • sqlite-utils and shot-scraper and Datasette
  • Miscellaneous WASM projects
  • Other model releases
  • What I'm using

Here's a copy of the May newsletter as a preview of what you'll get. Pay $10/month to stay a month ahead of the free copy!

Tags: newsletter

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llm-coding-agent 0.1a0

Release: llm-coding-agent 0.1a0 Another Fable 5 experiment. Now that my LLM library has evolved into more of an agent framework it's time to see what a simple coding agent would look like built on it. I started a new Python library using my python-lib-template-reposi...

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Using DSPy to evaluate and improve Datasette Agent's SQL system prompts

Research: Using DSPy to evaluate and improve Datasette Agent's SQL system prompts One of this morning's AIE keynotes covered dspy, which reminded me I've been meaning to see if it could help me improve the system prompt used by Datasette Agent - so I fired off an asy...

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Understand to participate

I saw Geoffrey Litt speak at AIE yesterday, and one framing he used particularly resonated with me: Understand to participate Geoffrey was talking about the challenge of collaborating with coding agents as they construct increasingly large and sophisticated changes, and the ...

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Quoting Anthropic

We’ve received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5.

We'll begin restoring access tomorrow, and will share an update soon.

Anthropic, on Twitter

Tags: anthropic, claude, generative-ai, claude-mythos, ai, llms

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Nano Banana 2 Lite

Nano Banana 2 Lite

Also known as Gemini 3.1 Flash Lite Image (gemini-3.1-flash-lite-image in their API), this is the "fastest and cheapest Gemini image model, engineered for velocity and scale".

I used AI studio to run this prompt:

Do a where's Waldo style image but it's where is the raccoon holding a ham radio

Densely illustrated "Where's Waldo"-style cartoon of a woodland festival filled with anthropomorphic animals (bears, foxes, badgers, rabbits, squirrels, owls) under a banner reading "FOREE'S FESTIVAL" and another reading "FOREST FIVAL," with bunting flags strung between trees, a Ferris wheel on the right, market stalls including one labeled "ACORN FAIR," signs reading "BANDSTAND," "HAM RADIO MEET" (appearing twice), and a stage where a bear plays guitar, a raccoon uses a ham radio, a badger plays drums, an owl looks on, and a fox plays trumpet, with crowds of animals wandering forest paths between trees and mountains in the background.

I like that one better than the results I got from the other Nano Banana models when I tried this back in April. It spelled Forest Festival wrong in two different ways though.

Via Hacker News

Tags: google, ai, generative-ai, llms, gemini, text-to-image, llm-release, nano-banana

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What's new in Claude Sonnet 5

What's new in Claude Sonnet 5 Claude Sonnet 5 came out this morning. I always head straight for the "what's new" developer docs because they tend to have more actionable information than the official announcement post. Anthropic say of Sonnet 5 that "its performance is close...

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The AI Compass

The AI Compass

This political compass style quiz by bambamramfan is pretty neat - answer 29 questions about AI and AI ethics to see which of the 30 archetypes you best fit.

I'm impressed that my answers on my first time through the quiz categorized me as "The Garage Tinkerer", patron saint myself!

Screenshot of a quiz result screen on a dark background. The top half shows a square scatter-plot quadrant chart with axes labeled GOOD (top), BAD (bottom), OVERHYPED (left of center) and TRANSFORMATIVE (right of center), filled with colored regions and scattered dots; a glowing white-ringed teal dot marks the user's position in the upper-right (good/transformative) area. Below, a card reads: "YOU ARE..." / "The Garage Tinkerer" / "patron saint: Simon Willison" / "You're running local models, building little tools, and having a genuinely great time. You don't care about the discourse — you care about making the thing do cool stuff. The technology is interesting and everyone arguing about it would be happier if they just opened a terminal."

It's implemented as a single page React app using the <script type="text/babel"> trick to avoid the necessary build step. Here's the code.

Via @erisianrite.com

Tags: ai, generative-ai, llms, ai-ethics