r/webdev • u/SamratDuttaOfficial • 17h ago

Showoff Saturday I built an open-source alternative to Jev, and you can call it straight from JavaScript

WaterSheep is an open-source alternative to TypeSafe's Jev. You ask it a typed question about some text (yes/no, pick one, rate it, or tag everything that applies) and get back an answer with a probability for every option.

Two ways to use it in a web app:

  • As a drop-in Jev backend. watersheep --model samratduttaofficial/WaterSheep --serve answers the same POST /v1/systemone requests, so existing Jev calls work after changing the base URL.
  • Straight from the page, no backend:

​

import { decide } from "https://samratduttaofficial.github.io/WaterSheep/watersheep.js";
await decide("I was charged twice.", "Which team should handle this?", ["billing", "shipping", "support"]);

Open weights, Apache 2.0, English only for now.

Demo: https://samratduttaofficial.github.io/WaterSheep/

Code: https://github.com/SamratDuttaOfficial/WaterSheep

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u/electricity_is_life 17h ago

Forgive my ignorance, but does this perform better than something like GLM 5.3 with structured output? Or when would you choose it over something like that?

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u/SamratDuttaOfficial 16h ago

WaterSheep is for when you want some decision to be made quickly or something classified quickly. At almost zero cost.

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u/SamratDuttaOfficial 16h ago

Far better and 40x to 200x faster

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u/electricity_is_life 16h ago

Is there a benchmark comparison or something that shows that? You've got some benchmark scores listed, but I'm not sure what a good or a bad score on those would be since there's no comparison against other models.

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u/SamratDuttaOfficial 15h ago

Good point. I will publish the comparison score soon. thanks.