Import AI 454: Automating alignment research; safety study of a Chinese model; HiFloat4
At what point do the financial markets price in the singularity?
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Scenario Planning for AI and the “Jobless Future”
We all read it in the daily news. The New York Times reports that economists who once dismissed the AI job threat are now taking it seriously. In February, Jack Dorsey cut 40% of Block’s workforce, telling shareholders that “intelligence tools have changed what it means to build and run a company.” Block’s stock rose […]
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Gradient-based Planning for World Models at Longer Horizons
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SymfonyDay Montreal 2026 - Schedule is Live!
The moment you’ve all been waiting for has finally arrived. After weeks of reviewing great proposals, we are thrilled to announce that the official schedule for SymfonyDay Montreal 2026 taking place on June 4, 2026 is now available! 🙏 A Huge Merci…
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SQL functions in Google Sheets to fetch data from Datasette
SQL functions in Google Sheets to fetch data from Datasette
TIL: SQL functions in Google Sheets to fetch data from Datasette I put together some notes on patterns for fetching data from a Datasette instance directly into Google Sheets - using the importdata() function, a "named function" that wraps it or a Google Apps Script if you need to send an API token in an HTTP header (not supported by importdata().) Here's an example sheet demonstrating all three methods. Tags: spreadsheets, datasette, google
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Claude Token Counter, now with model comparisons
Claude Token Counter, now with model comparisons
Claude Token Counter, now with model comparisons I upgraded my Claude Token Counter tool to add the ability to run the same count against different models in order to compare them. As far as I can tell Claude Opus 4.7 is the first model to change the tokenizer, so it's only worth running comparisons between 4.7 and 4.6. The Claude token counting API accepts any Claude model ID though so I've included options for all four of the notable current models (Opus 4.7 and 4.6, Sonnet 4.6, and Haiku…
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Headless everything for personal AI
Headless everything for personal AI
Headless everything for personal AI Matt Webb thinks headless services are about to become much more common: Why? Because using personal AIs is a better experience for users than using services directly (honestly); and headless services are quicker and more dependable for the personal AIs than having them click round a GUI with a bot-controlled mouse. Evidently Marc Benioff thinks so too: Welcome Salesforce Headless 360: No Browser Required! Our API is the UI. Entire Salesforce & Agentforce…
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Talking about Laravel, Oh Dear, and AI
Talking about Laravel, Oh Dear, and AI
In this interview, I talk about Laravel, application monitoring, and how AI is changing the way developers work.
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A Week of Symfony #1007 (April 13–19, 2026)
A Week of Symfony #1007 (April 13–19, 2026)
This week, Symfony UX released the 2.35 maintenance version and the new 3.0 major version, which removes all deprecated features and updates the PHP and Symfony requirements. In addition, we published more information about the upcoming SymfonyLive Berlin…
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Changes in the system prompt between Claude Opus 4.6 and 4.7
Changes in the system prompt between Claude Opus 4.6 and 4.7
Anthropic are the only major AI lab to publish the system prompts for their user-facing chat systems. Their system prompt archive now dates all the way back to Claude 3 in July 2024 and it's always interesting to see how the system prompt evolves as they publish new models. Opus 4.7 shipped the other day (April 16, 2026) with a Claude.ai system prompt update since Opus 4.6 (February 5, 2026). I had Claude Code take the Markdown version of their system prompts, break that up into separate…
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Scotty vs Laravel Envoy: Spatie's New Deploy Tool Is Worth the Switch
Scotty vs Laravel Envoy: Spatie's New Deploy Tool Is Worth the Switch
Hafiz compares Scotty with Laravel Envoy and explains why Spatie's new deploy tool is a nicer fit for SSH-based deployments. He walks through the plain bash format, improved terminal output, migration path, and zero-downtime deployment workflow. Read more
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Claude system prompts as a git timeline
Claude system prompts as a git timeline
Research: Claude system prompts as a git timeline Anthropic publish the system prompts for Claude chat and make that page available as Markdown. I had Claude Code turn that page into separate files for each model and model family with fake git commit dates to enable browsing the changes via the GitHub commit view. I used this to write my own detailed notes on the changes between Opus 4.6 and 4.7. Tags: system-prompts, anthropic, claude, generative-ai, ai, llms
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Adding a new content type to my blog-to-newsletter tool
Adding a new content type to my blog-to-newsletter tool
Agentic Engineering Patterns > Here's an example of a deceptively short prompt that got a lot of work done in a single shot. First, some background. I send out a free Substack newsletter around once a week containing content copied-and-pasted from my blog. I'm effectively using Substack as a lightweight way to allow people to subscribe to my blog via email. I generate the newsletter with my blog-to-newsletter tool - an HTML and JavaScript app that fetches my latest content from this…
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Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year
Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year
This year's PyCon US is coming up next month from May 13th to May 19th, with the core conference talks from Friday 15th to Sunday 17th and tutorial and sprint days either side. It's in Long Beach, California this year, the first time PyCon US has come to the West Coast since Portland, Oregon in 2017 and the first time in California since Santa Clara in 2013. If you're based in California this is a great opportunity to catch up with the Python community, meet a whole lot of interesting people…
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SQL functions in Google Sheets to fetch data from Datasette
SQL functions in Google Sheets to fetch data from Datasette
Simon Willison's Weblog •
Claude Token Counter, now with model comparisons
Headless everything for personal AI
Talking about Laravel, Oh Dear, and AI
A Week of Symfony #1007 (April 13–19, 2026)
Changes in the system prompt between Claude Opus 4.6 and 4.7
Changes in the system prompt between Claude Opus 4.6 and 4.7
Simon Willison's Weblog •
Scotty vs Laravel Envoy: Spatie's New Deploy Tool Is Worth the Switch
Scotty vs Laravel Envoy: Spatie's New Deploy Tool Is Worth the Switch
Freek Van der Herten •
Claude system prompts as a git timeline
Adding a new content type to my blog-to-newsletter tool
Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year
Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year
Simon Willison's Weblog •
Import AI 454: Automating alignment research; safety study of a Chinese model; HiFloat4
Scenario Planning for AI and the “Jobless Future”
Gradient-based Planning for World Models at Longer Horizons
SymfonyDay Montreal 2026 - Schedule is Live!
SQL functions in Google Sheets to fetch data from Datasette
Claude Token Counter, now with model comparisons
How to Fine-Tune LLMs in 2026
Headless everything for personal AI
Talking about Laravel, Oh Dear, and AI
A Week of Symfony #1007 (April 13–19, 2026)
Changes in the system prompt between Claude Opus 4.6 and 4.7
Scotty vs Laravel Envoy: Spatie's New Deploy Tool Is Worth the Switch
Claude system prompts as a git timeline
Adding a new content type to my blog-to-newsletter tool
Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year
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