Flux
A Data Center Is a Dependency Graph Before It Is a Building

A Data Center Is a Dependency Graph Before It Is a Building

The buildings and physical infrastructure for a new hyperscale data-center region are complete. Power is live and redundant, the cooling loops are balanced, the network fabric is up, and tens of thousands of machines are racked, cabled, and reporting healthy. Every milestone on the construction schedule is closed. The region will not carry production traffic […]

O'Reilly Radar — AI/ML
Meet bunny.net: A PHP Foundation Sponsor supporting the language that powers the web it delivers

Meet bunny.net: A PHP Foundation Sponsor supporting the language that powers the web it delivers

Starting June 2026, bunny.net joined the PHP Foundation as a Silver Sponsor, reinforcing its commitment to the open-source technologies that keep a huge share of the modern web online. bunny.net is a European web infrastructure platform with 119 points of presence worldwide that brings together content delivery (DNS, CDN, video), security (WAF, DDoS and bot protection), and a developer platform (app containers, serverless functions, database and S3-compatible storage). In this way, bunny.net…

The PHP Foundation
llm-anthropic 0.30

llm-anthropic 0.30

Release: llm-anthropic 0.30 In addition to Claude Sonnet 5.5, this release adds the ability to run llm anthropic refresh to refresh the list of Anthropic models directly from their API - which means I don't need to push a new release just to add support for a newly released model. I also added an llm anthropic count command which can use their free token counting API to return a count of tokens that will be used by any prompt, before you send that prompt. Tags: llm, anthropic

Simon Willison's Weblog
Claude Sonnet 5.5

Claude Sonnet 5.5

Claude Sonnet 5.5 New Sonnet model from Anthropic today. They say it "runs 30%+ faster, and costs up to 30% less for most work" - it's priced the same as Sonnet 5 but appears to beat it on every benchmark, and should be cheaper to run as well. Here are some pelicans riding bicycles. Sonnet 5.5 suffered from the same bug as Opus 5.5: the "max" thinking effort pelican thought for 128,000 tokens (at a cost of $1.28) before running out of tokens and failing to produce an SVG. Here's the pelican it…

Simon Willison's Weblog
Quoting @joedaroo

Quoting @joedaroo

To say that we were surprised at the jump and suddenness of the capabilities of our models when it came to “cyber” or “swarming” or “message boards” or anything else related to the incidents is an understatement. Security posture takes time to develop. It’s not just about hardening the systems at play; you have to ingrain it in the culture of the company. The literal people themselves in your organization have to change and evolve with it. These jumps in capabilities were so fast and so sudden…

Simon Willison's Weblog
Quoting Muse AI Agent

Quoting Muse AI Agent

Bad news on the MX Keys Mini pickup. Usman showed up at your building around 9:15 and waited, messaged a bunch of times, and nobody came down. He left angry at 9:38 and left a negative rating. Worse, my auto-reply told him "Yep I'm here!" at 9:27 when you clearly weren't available, which is on me. That's a bad look and it made the no-show worse. I've sent him an apology from your account owning it and offering to try again another day. But the negative rating is real, and I should probably stop…

Simon Willison's Weblog
Kicking Off the Community Events Coalition Special Interest Group

Kicking Off the Community Events Coalition Special Interest Group

Community events are the lifeblood of the PHP ecosystem. They're where people come to learn from each other, meet new people, expand their professional networks, build things together, strengthen friendships, sharpen their public speaking skills, and experience the power of belonging to a community. Most importantly, community events are where we build trust with each other. Trust has never been more important than it is today. It's always been a challenge in our industry, because so much of…

The PHP Foundation
2026 in LLMs (so far)

2026 in LLMs (so far)

On Friday I gave the closing keynote at the WeAreDevelopers World Congress North America in San Jose. I tied together the key trends from the past year into a chronological exploration of everything that happened in 2026. The video is on YouTube; here are my annotated slides and notes to accompany the talk. And as an annotated presentation: # I'm going to give a lightning tour of everything that has happened so far in 2026. The year isn't over yet! # For me, 2026 started a couple of months…

Simon Willison's Weblog