What is Decision Models Lab?

A learning lab for building with decision models: TypeSafe Jev and Microsoft Decision-1 route support tickets quickly, Claude handles the hard cases, and the repo ships an interactive site, a benchmark, calibration tests and docs.

How do Jev and Decision-1 divide work with Claude?

The README's rule is fast decisions with Jev and Decision-1, careful reasoning with Claude, and a clear hand-over rule between them: the decision models handle routing at under a second per call, and Claude takes the hard cases.

What does the routing cost in Decision Models Lab?

The project summary says support tickets route in under a second for about $0.02 per 1,000 calls, and a Hello World run costs about $0.00003. Both models are reached through a single OpenRouter key.

How do I get started with Decision Models Lab?

You need git, Node.js 20.12 or newer and an OpenRouter key with credit; $5 is described as more than enough. Clone the repo, run npm install, copy .env.example to .env and set OPENROUTER_API_KEY.

Why does Decision Models Lab use OpenRouter?

One OpenRouter key covers both TypeSafe Jev and Microsoft Decision-1, so a single key and credit balance drives the whole comparison, per the README's Hello World section.

What is included beyond the demo?

An interactive site published on GitHub Pages, a benchmark, calibration tests and documentation, plus human-in-the-loop topics on the repository, according to the metadata and README.

Who built Decision Models Lab and under what license?

The GitHub user shashikantdev3 publishes it under the MIT license. The repository was created and last pushed 2026-10-15, with 4 stars and no forks when the sweep ran.

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Decision Models Lab

A learning lab for decision models: TypeSafe Jev and Microsoft Decision-1 route support tickets in under a second for about $0.02 per 1,000 calls, while Claude handles the hard cases. It ships an interactive site, a benchmark, calibration tests and docs.

See highlights Open github.com

Stars: 4
Language: TypeScript
License: MIT
Reading time: 2 min
Published by: Community
Author: shashikantdev3
Last verified: Oct 2026

shashikantdev3/decision-models-lab

User repository on GitHub

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Learn decision models by building with them. TypeSafe Jev and Microsoft Decision-1 route support tickets in under a second for about $0.02 per 1,000 calls; Claude handles the hard cases. Interactive site, benchmark, calibration tests and docs.

Forks: 0
Last pushed: Updated Oct 2026

Repo stats from the GitHub API, cached Oct 2026.Homepage

Tagscommunity github benchmark support

Works forJev for Routing Jev for Classification Jev for Evaluation

Used inJev for Customer Support Jev for Software & DevTools

Languages: TypeScript
Platforms: OpenRouter
Capabilities: Open sourceRequires API key

Highlights

Fast decisions with Jev and Decision-1, careful reasoning with Claude, and a clear rule for when to hand over.
Hello World runs in 5 minutes: git, Node.js 20.12+, and an OpenRouter key with a little credit.
One OpenRouter key covers both decision models; a Hello World run costs about $0.00003.
The site is published on GitHub Pages, and the repo includes benchmark and calibration tests.
MIT licensed TypeScript project, created and pushed 2026-10-15, 4 stars when the sweep ran.

Quickstart

bash

git clone https://github.com/shashikantdev3/decision-models-lab.git
cd decision-models-lab
npm install
cp .env.example .env

Watch out

README reviewed 2026-10-17; the $0.02 per 1,000 calls and sub-second routing figures come from the project's own summary, and the digest excerpt stops after the clone-and-install steps, before the benchmark details.

Questions about this entry

Short answers drawn from the linked project or page.

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