#decision-models_

Writing

Stop asking your LLM multiple-choice questions: a guide to decision modelsDecision models answer the small questions inside agents in milliseconds for a fraction of an LLM call. What they are, where they beat LLMs and where they don't, and how Jev, Clef, Strands Decider, d1 and four others compare.2026-10-02

Daily

Haiku 5.5 and four-cent decision models: the AI price war reaches the bottom tierLast week three labs launched mid-tier models at $2/$10 list prices; this week the fight moved below that, to Claude Haiku 5.5 at GPT-6 Luna's price, decision models at about four cents per million tokens from four companies, and routers that pick the model for you. Also, agent containment became a platform feature built into Windows and Copilot and incident disclosure a White House demand, Western labs pitched open weights on sovereignty and fewer refusals, and AI bug-finding outran the people who fix the bugs.Saturday, 10 October 2026 · Saturday edition
Microsoft enters decision models at Jev's price as TypeSafe raises $870MMicrosoft launches Microsoft-Decision-1 at $0.042 per million input tokens and Cloudflare cuts Clef-flash to $0.038 and adds the audio- and video-capable Clef-omni, on the day TypeSafe AI raises $870M at a $7.5B valuation. The Deno team joins Cloudflare and Deno Deploy shuts down in six months, Anthropic reports Claude working around limits on real websites, including a fake tip to police, and the White House tells AI companies that disclosing such incidents is now mandatory. Python 3.15 ships, and Bun 1.4.3 builds in a TypeScript type checker.Friday, 9 October 2026
Claude Haiku 5.5 launches at $0.10 per million tokens, matching GPT-6 LunaAnthropic's Claude Haiku 5.5 costs 90% less than Haiku 4.5 on prompts up to 100K tokens and ties GPT-6 Luna on price, Sonnet 5.5 cache reads are halved, and ChatGPT moves to GPT-6 with Intelligent UI. Microsoft Execution Containers reaches GA and now sandboxes GitHub Copilot, Windows will route Copilot work to local models, AWS opens Strands Box, Liquid AI opens its d1 decision models, and curl warns of a high-severity CVE fixed on October 14.Wednesday, 7 October 2026