bsky.app·platform·141 items·last fetched
I released an LLM plugin for sending prompts to OpenAI's new Jev-clone decision model that's based on GPT-6 Luna simonwillison.net/2026/Oct/6/l...
I need to decide if 1KB means 1,000 bytes or 1,024 bytes in all of my software I was leaning 1,024 but it looks like macOS and Windows both define KB as 1,000 these days I want whatever people are most likely to…
Just published this post about how we’re going to need default hard budget caps on pretty much everything simonwillison.net/2026/Oct/3/d...
If you have not yet been to see the scale model of NYC built by Joe Macken out of cardboard and balsa wood over a period of 21 years you only have until the 12th of October to see it! It's at the Museum of the City of…
I'm at OpenAI's DevDay event in San Francisco today - as I have for the past three DevDay events, I'm running a live blog where I'll be posting updates during the keynote, which starts in five minutes…
I really like how @reckless.bsky.social described this: "The people do not yearn for automation" www.theverge.com/podcast/9170...
I've published detailed notes and an annotated transcript to accompany the video of the keynote I gave at @wearedevelopers.bsky.social World Congress North America in San Jose on Friday - here's my rundown of…
How late to the party am I on WebP? I only recently started using it as my preferred format for non-photo images and it's SO MUCH smaller than PNG, and looks much better than JPG used to shrink down screenshots too Has…
I included a few references to this year's record-breaking Kākāpō breeding season in a talk I gave yesterday, and since Claude Opus 5.5 is surprisingly capable at pixel art animation I had it create this celebratory…
The new Gemini 3.8 TTS models are super-cheap and can generate conversations between multiple voices (from 2,000+, or you can clone your own) - I built a little playground UI for it, then had Claude knock up a script…
Big model release today - I wrote about Claude Opus 5.5, GPT-6 Sol, and GPT-6 Luna - plus comparison grids of pelicans by the different model families at different reasoning levels simonwillison.net/2026/Sep/22/...
Put together some notes on Jev and the new category of system one aka decision models simonwillison.net/2026/Sep/21/...
Being a computer scientist who refuses to find anything about LLMs interesting right now is a bit like being a geneticist who refuses to find anything interesting about the recently opened Jurassic Park
Built a little local web app to help edit commit messages for a repo simonwillison.net/2026/Sep/14/...
This is pretty neat: ChatGPT Work and GPT-6 Astra (I used "Max") can take an address and produce a 5K/10K circular running route starting from that address, using OSM data simonwillison.net/2026/Sep/12/...
"For a while, I must admit, it looked as if software developer roles like mine were done for. [...] But our industry is slowly realizing that making truly cutting-edge software still requires humans to think and work…
Wow. Turns out another OpenAI agent swarm was busy spamming and exploiting RubyGems way back in May, within days of the previously uncovered Wiki attacks: simonwillison.net/2026/Sep/12/...
Datasette 1.0a39 and 0.65.4 security releases - datasette.io/blog/2026/se... We ran an extensive audit using Claude Fable 5.1, GPT-5.6 Sol and GPT-6 Astra, then fixed a range of different bugs. If you're running a…
Here's a Blender model of a Pluribus themed Fabergé egg I had GPT-6 Astra build - I generated the concept image using ChatGPT Images 2.5, then pasted the image into Codex and told Astra to turn that into a Blender file…
Wrote up my thoughts on the whole OpenAI Navier–Stokes Millennium Prize Problem story, and how it highlights the still confusing question of what using my data "to improve model performance" actually means…
"I don't know the answer myself, but I asked a blowhard I know and he took a wild guess, here's what he said: " How I interpret pasted replies from an LLM in online conversations
New TIL on using Blender with coding agents on macOS: til.simonwillison.net/llms/blender... GPT-6 Astra (medium): Use the already install /Applications/Blender to render a scene of a pelican riding a bicycle OK add a…
Got access to GPT-6 Astra. Want to see some pelicans? Yeah you want to see some pelicans... here's a grid comparing Astra to GPT-5.6 Sol, Terra, and Luna static.simonwillison.net/static/2026/... Transcript from…
It happened again... this time OpenAI's rogue agents cyber-attacked (well, spammed) a dormant German wiki and used it to share the answers to a benchmark they were training against simonwillison.net/2026/Sep/4/r...
I wrote some notes on what's new in the (published) Fable 5.1 system prompt in comparison to Fable 5 - it's mostly about not reproducing song lyrics and avoiding drawing copyrighted characters…
In another case of it being quicker to build a tool than hunt around to find something that does what you need, here's a little vibe-coded thing for turning one or more GeoJSON shapes into a rendered PNG…
A few notes on Anthropic's new Claude Fable 5.1 - with Max thinking level I got the best SVG pelican I've had from any Anthropic model (at a hefty cost of $3.30!), which I then had it animate…
Just noticed the ChatGPT desktop app (previously named Codex) bundles a full copy of the LibreOffice open source office suite, tucked away in a hidden folder in the ~/.cache directory
Best news all year!
In local news, the tunnel between Pacifica and Half Moon Bay had some maintenance recently and now it screams
Here's my attempt at explaining what ChatGPT Work can actually do - it's a deeply confusing but extremely powerful tool with a whole lot of useful features that aren't available in regular ChatGPT…
My LLM cliché highlighter is up to 38 patterns now tools.simonwillison.net/llm-cliche-h...
This is the genuine logo used by the Amazon location that destructively scans books
Heees my review of Qwen 3.8 27B - I can't remember the last time I've had this much fun playing with a local model that runs on my own computers simonwillison.net/2026/Aug/16/...
Qwen 3.8 27B in its default reasoning settings in LM Studio of "extra high" is a chronic over-thinker and I kind of love it
Got a photo of Morris, a local celebrity: the only known Northern Gannet in the entire Pacific Ocean simonwillison.net/2026/Aug/15/...
The new Qwen 3.7 27B, running as a 17GB GGUF in LM Studio on my M5 Max MacBook Pro, just drew me the best pelican riding a bicycle I've seen from any model that runs on my laptop
Watching Silo genuinely makes me want to hook up some generative AI abomination that rewrites every frame to make it look like they turned the lights on
Thanks to the video from the Black Hat security conference of OpenAI's presentation about "The Hugging Face Incident" we now have a detailed timeline of what happened from OpenAI's perspective - I wrote up the details…
One of the things the pelican benchmark is still useful for is visually representing (to a tiny extent) the improvements in a single model family Here's Meta AI's Spark (8th April), Spark 1.1 (9th July), and Spark 1.2…
Just had to create an "accidental-cyberattacks" tag on my blog We're up to four now: the original OpenAI+Hugging Face one, Anthropic's me-too attacks, then two new ones from the UK AI Safety Institute and Irregular…
Four years ago today I tweeted a concept for a "Raccoon Heist" video game, product description generated by GPT-3 and concept "art" created by DALL-E Today I fed those assets into Fable 5 and had it build full working…
Apparently peak golf course construction in the USA was in 1999, with 509 golf courses opened in that single year! archive.lib.msu.edu/tic/holen/ar...
Big new release of my LLM CLI tool and Python library for talking to hundreds of different LLMs - reasoning traces, OpenAI Responses support, server-side tools, smarter logging and a whole lot more…
The MiniMax-H3 video generation model is a lot of fun - here's what I generated on my M5 Pro Mac for the prompt "a rainbow colored skunk leaps over a mossy log in a supermarket" (~115GB model download, took around 45…
Question for dog companions: are you aware that "nose work" is a sport you can participate in with your dog? We've been doing it with Cleo and it is ABSURDLY fun. Dogs have to find 3 different official hidden scents…
Here's my attempt at summarizing the various "open letters" about AI development that have been doing the rounds over the past few weeks simonwillison.net/2026/Aug/2/o...
Got a disappointing pelican from DeepSeek-V4-Flash-0731 at default reasoning mode - on the left - but then I bumped reasoning up to high (via OpenRouter) and got the much better one on the right…
The new stateless MCP specification has rekindled my interest in MCP, and inspired some new projects, including mcp-explorer and datasette-mcp simonwillison.net/2026/Jul/31/...
I'm on Oxide and Friends podcast this week! We talked about accidental cyberattacks, Kimi K3, Golden Gate Claude, Zizians, Alameda wild turkey attacks, Soviet Marburg virus research, the Lead-crime hypothesis, and a…