Flux
Spot birds not golf

Spot birds not golf

Suggestion for hyperscalers feeling pressure over data center water use: Buy up a few exclusive country clubs, convert the golf courses into public parks, pay for guides and binoculars to get the previous members into birdwatching - help them embrace a more sustainable hobby! Google used 10.9 billion gallons in 2025, so about 30 million gallons per day. The Coachella Valley has 120 golf courses each using ~800 acre-feet per year, which is ~750,000 gallons per day. So Google buying up 40 of…

Simon Willison's Weblog
Firefox in WebAssembly

Firefox in WebAssembly

Firefox in WebAssembly This is absurdly cool: Puter compiled Firefox to WebAssembly such that the whole browser runs in another browser. Here's my blog, running in Firefox, running in WebAssembly, running in Chrome: They chose Firefox/Gecko because it has strong single-process support. The project used an estimated $25,000 worth of Claude Opus and Fable tokens, but took advantage of a Claude Max subscription plan so cost much less in actual dollars. The demo funnels all traffic over a WebSocket…

Simon Willison's Weblog
Kimi K3, and what we can still learn from the pelican benchmark

Kimi K3, and what we can still learn from the pelican benchmark

Chinese AI lab Moonshot AI announced Kimi K3 this morning, describing it as their "most capable model to date, with 2.8 trillion parameters". It's currently available via their website and API, but an open weight release is promised "by July 27, 2026". Moonshot are calling this the first "open 3T-class model" (I guess they're rounding 2.8 trillion up to 3 trillion), taking the crown from DeepSeek's 1.6T v4 Pro. Their self-reported benchmarks have K3 mostly beating Claude Opus 4.8 max and…

Simon Willison's Weblog
Quoting Thibault Sottiaux

Quoting Thibault Sottiaux

On file deletions. We’ve investigated a handful of reports where GPT-5.6 unexpectedly deleted files. What we have found is that this most commonly occurs when: Full access mode is enabled and codex is run without sandboxing protections, including without auto review being enabled The model attempts to override the $HOME env var to define a temporary directory. The model makes an honest mistake and mistakenly deletes $HOME instead. — Thibault Sottiaux, describing a pretty gnarly Codex bug…

Simon Willison's Weblog
Inkling: Our open-weights model

Inkling: Our open-weights model

Inkling: Our open-weights model Mira Murati's Thinking Machines Lab just released their first open-weights model. Inkling is "a Mixture-of-Experts transformer with 975B total parameters, 41B active" - an Apache-2.0 licensed multimodal model trained on 45 trillion tokens of text, images, audio and video. They're also promising Inkling-Small, a 276B (12B active) model, but that's still being tested and the weights will be released "once that work is complete". The model card is much shorter than…

Simon Willison's Weblog
Mermaid to ASCII art (mermaid-ascii)

Mermaid to ASCII art (mermaid-ascii)

Tool: Mermaid to ASCII art (mermaid-ascii) After building the Mermaid to ASCII tool based on Grok Build's Rust code I learned that there's an older, more fully-featured Go library called AlexanderGrooff/mermaid-ascii that implements a similar pattern, so I had Claude Fable 5 compile that one to WebAssembly as well so I could compare the two. This one includes support for colors! Tags: go, tools, webassembly, mermaid

Simon Willison's Weblog
Quoting Linus Torvalds

Quoting Linus Torvalds

I realize that some people really dislike AI, but this is an area where I'm willing to absolutely put my foot down as the top-level maintainer. Linux is not one of those anti-AI projects, and if somebody has issues with that, they can do the open-source thing and fork it. Or just walk away. AI is a tool, just like other tools we use. And it's clearly a useful one. It may not have been that "clearly" even just a year ago, but it's no longer in question today. There are other questions around AI…

Simon Willison's Weblog
The Act and the Outcome of Creation

The Act and the Outcome of Creation

Creation is the ultimate form of pursuing ourselves, giving to the world when shared, and using the power of our subconscious. It gives us joy, and to every artist, it is the ultimate (flow) state of happiness. The Act of Creation The act of creation is an outlet. It gives joy to us when we create something out of nothing, we block out anxiety or boredom. Creating should be done like:

SSP Data Engineering Blog
Mermaid to Unicode box art (grok-mermaid)

Mermaid to Unicode box art (grok-mermaid)

Tool: Mermaid to Unicode box art (grok-mermaid) While exploring the codebase for the newly open-sourced Grok CLI coding agent I came across xai-grok-markdown/src/mermaid.rs, a "self-contained terminal renderer for Mermaid diagrams" written in Rust. I figured it would be fun to try that out in a browser via WebAssembly. Here's the prompt I ran in Claude Code for web (Fable 5), and this is what the resulting tool looks like: Tags: tools, rust, webassembly, mermaid, grok, xai

Simon Willison's Weblog
xai-org/grok-build, now open source

xai-org/grok-build, now open source

xai-org/grok-build, now open source xAI's grok CLI tool faced severe community backlash yesterday when it became apparent that running the command in a directory could upload that entire directory to xAI's Google Cloud buckets. One user reported running it in their home directory and seeing it upload "my SSH keys, my password manager database, my documents, photos, videos, everything". I've not seen an official explanation for why it was doing this, but xAI did respond to the feedback (Musk:…

Simon Willison's Weblog
Don’t Neglect the Operational Groundwork

Don’t Neglect the Operational Groundwork

Autonomous agents are moving faster than the field’s ability to govern them, and catching up requires more than better prompts or bigger sandboxes. At O’Reilly’s recent AI Superstream focused on OpenClaw and the broader ecosystem of locally run and self-hosted AI agents, five speakers, each working at a different layer of the stack, explored patterns […]

O'Reilly Radar — AI/ML