The name is the button.

An agent writes the code now, and a human thumb hovers over Accept all a hundred times a day. The honest question of this decade is what, exactly, you just accepted. So I read the diff.

Eight years as a backend engineer in Stockholm, back in Tokyo since 2023, and I still ship something small most nights, usually badly. My one rule: the only real review of a model is the thing you built with it. That is why there is no leaderboard on this site.

Around a hundred and forty sources come through — the labs' own posts, the papers, the tools, the runtimes and languages nobody is watching yet, the chip under the demo, and the newsletters people actually forward. What is moving gets counted so the week reads at a glance, and every few days I explain one mechanism in plain words.

A story here is a headline, a short excerpt, one image and the link to whoever wrote it. We never reproduce the post; the images belong to their authors. A post written in Japanese appears in Japanese, exactly as it was published, and the link goes to the original.

— Yuki Halvorsen, Tokyo

← Accept All Archive

PydanticTools

The 7 best LLM evaluation tools in 2026

08.26

By Bill Easton. Evaluation workflows updated September 12, 2026; pricing and licenses checked August 26, 2026. Picking a metric is the easy part of evaluating an LLM application.

Research Funding & deals Pydantic Logfire

Read at Pydantic ↗

One letter a week, starting soon.

Latest

The 7 best LLM evaluation tools in 2026

Related

VoicesOpen-world evaluations for measuring frontier AI capabilities AI Snake Oil

VoicesUnderstanding the 4 Main Approaches to LLM Evaluation (From Scratch) Ahead of AI

VoicesUsing LLM-as-a-Judge For Evaluation: A Complete Guide Hamel Husain

ResearchGranite 4.2 brings native reasoning to enterprise agents IBM Research

LabsThe Entertainment Industry’s Biggest Names Back Stability AI in Latest Funding Round Stability AI

ResearchSOP-Bench: A new benchmark for evaluating AI agents on real business procedures Amazon Science