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Project Information
Project Name: jevos
Project URL: https://github.com/feder-cr/jev (release: https://github.com/feder-cr/jev/releases/tag/jevos)
Description:
jevos is an open-source, self-hosted alternative to TypeSafe's Jev for yes/no decisions. It's a FastAPI server exposing a Jev-compatible HTTP API (
/v1/systemone): send a text and a yes/no question, get back P(yes) from a single forward pass of a 1B model (MiniCPM5-1B cut to 17 layers, GGUF q4_k_m, 619MB) running on llama.cpp, CPU-only. TypeSafe's official SDK works unchanged for yes/no questions. On a laptop CPU it answers in 54ms (short request) to 220ms (long request).Criteria
Is the project new?
How long has the project been maintained?
The GitHub repo (feder-cr/jev) was created in August 2024, but honestly the current jevos model and server were released 2 days ago (2026-09-25) as a fresh, focused project rather than a year of iteration on this exact artifact. Submitting anyway per this list's openness to new, useful FastAPI projects — happy to have it deferred if a longer track record is preferred.
How many releases has it had if it's a library or package?
One release so far:
jevos(https://github.com/feder-cr/jev/releases/tag/jevos), containing the GGUF model files and server.Are you the author, or are you submitting the project on behalf of a company?
What makes it awesome?
It's a drop-in, open-source, self-hostable replacement for a commercial "yes/no decision" API, using an off-the-shelf FastAPI server + llama.cpp, running entirely on CPU (no GPU needed) with sub-250ms latency. Useful for anyone using TypeSafe's Jev SDK who wants a free/local/open alternative for the yes/no-question use case.
AI Disclosure
Additional Information
Disclosure: I'm one of the project's two authors (feder-cr). Measured accuracy on 2,000 held-out yes/no rule questions: jevos 0.815 vs. Jev 0.927 vs. Laya 0.489 — lower than the commercial original but functional and free/local. MIT licensed.
🤖 Generated with Claude Code