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

The Decoder

OpenAI launches Decisions API that reduces complex evaluations to yes, no, or pick one

October 7

OpenAI's new Decisions API classifies text and images about ten times faster than the Responses API, returning yes/no probabilities, category picks, or scale ratings for $0.10 per million input…

MCP, skills & tools Research Funding & deals

Read at The Decoder ↗

One letter a week, in your inbox.

Latest

OpenAI launches Decisions API that reduces complex evaluations to yes, no, or pick one

Related

AsiabyteXL Raises $9 Mn To Take Tech, AI Skilling To More Engineering Colleges Inc42

ResearchEmotional optimization by newsroom AI needs behavioural evaluation Nature Machine Intelligence

GitHubPresentation: Building Reusable Evaluation Frameworks for Agentic AI Products InfoQ AI

VoicesClaude’s new auto eval tool Hamel Husain

Voices[AINews] OpenAI DevDay 2026: Dots, 6.1 Sol, Ultrafast, Decisions API, Agents API, Spaces, Marketplace, and 1.2 Billion ChatGPT WAU Latent Space

LabsOpen TTS Leaderboard: Scalable Evaluation for Multilingual Text-to-Speech and Voice Cloning Hugging Face Blog