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Simon Willison's Weblog

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IA Programmation
Quoting Andrej Karpathy
IA Programmation

Quoting Andrej Karpathy

I feel a lot of things changing as working software increasingly comes out on a tap. The Jevon's paradox kicks in and I feel my own demand for software growing substantially. You can ask for anything - explainers, visualizers, dashboards, bespoke single-use apps (e.g. a full wandb that is hyper-specific just for your project), you can 10X your test suite, auto-optimize code, run giant research projects with custom HTML for the results, anything! "Free your mind" (Matrix ref). — Andrej…

Simon Willison's Weblog
Siri AI at WWDC 2026
IA Programmation

Siri AI at WWDC 2026

Given how badly burned anyone who took Apple's 2024 WWDC Apple Intelligence announcements at face value was, I'm holding to a strict "I'll believe it when I see it" policy for everything they announced today. The new Siri AI features do at least look feasible with today's technology, especially since Apple are licensing a custom Gemini-derived model that they can run on their own Private Cloud Compute. It sounds like they'll be taking advantage of vision LLMs to extract information from the…

Simon Willison's Weblog
datasette-agent-edit 0.1a0
IA Programmation

datasette-agent-edit 0.1a0

Release: datasette-agent-edit 0.1a0 I'm planning several plugins for Datasette Agent which can make edits to existing pieces of text - things like collaborative Markdown editing, updating large SQL queries, and editing SVG files. Agentic editing of text is a little tricky to get right. My favorite published design for this is for the Claude text editor, which implements the following tools: view - view sections of a file, with line numbers added to every line. str_replace - find an exact…

Simon Willison's Weblog
Running Python code in a sandbox with MicroPython and WASM
IA Programmation

Running Python code in a sandbox with MicroPython and WASM

I've been experimenting with different approaches to running code in a sandbox for several years now, but my latest attempt feels like it might finally have all of the characteristics I've been looking for. I've released it as an alpha package called micropython-wasm, and I'm using it for a code execution sandbox plugin for Datasette Agent called datasette-agent-micropython. Why do I want a sandbox? What I want from a sandbox WebAssembly looks really promising here MicroPython in WebAssembly…

Simon Willison's Weblog
OpenAI Help: Lockdown Mode
IA Programmation

OpenAI Help: Lockdown Mode

OpenAI Help: Lockdown Mode OpenAI first teased this in February, but now it's live and "rolling out to eligible personal accounts, including Free, Go, Plus, and Pro, and self-serve ChatGPT Business accounts": Lockdown Mode is designed to help prevent the final stage of data exfiltration from a prompt injection attack by limiting outbound network requests that could transfer sensitive data to an attacker. Lockdown Mode does not prevent prompt injections from appearing in the content ChatGPT…

Simon Willison's Weblog
Quoting Andreas Kling
IA Programmation

Quoting Andreas Kling

We will no longer accept public pull requests. [...] A substantial patch used to imply substantial effort, and that effort was a reasonable proxy for good faith. That assumption no longer holds. [...] Whether code was typed by hand is beside the point. What matters is who is responsible for it once it enters the browser. Ladybird is becoming a browser for real users. The people introducing changes to it must be the people who decide those changes belong in the project, and who will answer for…

Simon Willison's Weblog
AI enthusiasts are in a race against time, AI skeptics are in a race against entropy
IA Programmation

AI enthusiasts are in a race against time, AI skeptics are in a race against entropy

AI enthusiasts are in a race against time, AI skeptics are in a race against entropy Charity Majors neatly captures the dynamic between AI enthusiasts and AI skeptics, both of whom are trying to build great software, often in the same teams: The enthusiasts are not wrong. We are starting to see real, non-imaginary, discontinuous leaps in capabilities from teams that lean in hard to working with AI. And this does not feel like a normal technology cycle where you can wait for the dust to settle;…

Simon Willison's Weblog
Uber Caps Usage of AI Tools Like Claude Code to Manage Costs
IA Programmation

Uber Caps Usage of AI Tools Like Claude Code to Manage Costs

Uber Caps Usage of AI Tools Like Claude Code to Manage Costs I wrote the other day about Uber blowing its 2026 AI budget in four months, and how that wasn't particularly surprising given they would have set that budget in 2025, before anyone could have predicted how popular token-burning coding agents were about to become. Natalie Lung for Bloomberg: The rideshare giant is limiting all employees to $1,500 in monthly token spending per AI coding tool, an Uber spokesperson said in response to a…

Simon Willison's Weblog
Microsoft's new MAI models
IA Programmation

Microsoft's new MAI models

Microsoft announced two new text LLMs this morning - MAI-Thinking-1 (reasoning, 1T parameters, 35B active, available to "select early partners") and MAI-Code-1-Flash (137B Parameters, 5B active, "purpose-built for GitHub Copilot and VS Code to deliver high performance and lower cost [...] rolling out to GitHub Copilot individual users in Visual Studio Code"). I've not been able to try either of them just yet. It's very interesting to see Microsoft releasing models with such low parameter…

Simon Willison's Weblog
Pasted File Editor
IA Programmation

Pasted File Editor

Tool: Pasted File Editor I really like how you can paste a large volume of text into claude.ai (or the Claude desktop/mobile apps) and it will detect it as a large paste and turn it into a file attachment instead. I decided to have Codex desktop build me a version of that as a prototype. You can also open files directly - including images which will be shown as thumbnails - or drag files onto the textarea. Tags: javascript, tools, ai-assisted-programming, claude, codex

Simon Willison's Weblog
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