Decision Models · demos
Demo 3 · specialists

A small model trained for one job beats a generalist on that job.

Jev 1.14.0 is TypeSafe's general model. Here it meets our use-case models, each on its own task, on held-out examples (for the two offline models we also show their public dev set, marked as such). You can try the first one live; the other two were measured offline.

A. LLM request router · B. Demand forecasting and risk assessment

live on api.decisionmodels.io

A. s1-llm-auto-router

A router classifier for LLM gateways. For one user request it answers seven typed questions in a single call: what kind of request it is, how hard, how high the stakes, whether it needs tools, vision or a long context, and whether it is a follow-up. It runs on CPU, about 26 ms inside the model.

Category accuracy
vs

Which of 9 kinds of request. Higher is better.

All 7 answers exactly right
vs

Every one of the seven answers correct for the same request.

Median round trip
vs

Price per 1M input tokens
vs

List prices of the two APIs.

s1-llm-auto-routerJev 1.14.0
Question by question

Where the difference comes from

Difficulty and stakes: exact level matched (difficulty 5 levels, stakes 4 levels). Flags: yes/no accuracy at p ≥ 0.5. Category calibration error (ECE): how far stated confidence is from actual accuracy, lower is better.

Your turn · live

Route a prompt

Only s1-llm-auto-router is called live; Jev is not called from this site.
Held-out examples · 300 drawn at random

Browse them, including where we are wrong

s1-llm-auto-routerJev 1.14.0gold label first; green = matches gold, red = does not
measured offline

B. Demand forecasting and risk assessment