Hey everyone! 👋 I built an optional Jev reranking adapter for [GBrain]( ), Garry Tan’s open-source second brain.
Adminby Daniel Andrade2026-09-17
Hey everyone! 👋 I built an optional Jev reranking adapter for [GBrain](https://github.com/garrytan/gbrain), Garry Tan’s open-source second brain.
It uses System One’s typed Score questions to judge query relevance, with context-aware batching and parallel execution. It plugs into GBrain’s existing provider architecture, keeping the Voyage adapter unchanged.
One interesting result from a synthetic benchmark with 100 long documents:
- Active elapsed time: Jev 1.90s vs Voyage 14.40s, excluding quota waits.
- Nominal API cost: Jev $0.00503 vs Voyage $0.00500.
- Requests: Jev 4 vs Voyage 42.
This was one run per provider, using Voyage rerank-3 with evaluation-specific batching and pacing to fit our free-tier account limits. Each provider was packed independently.
The PR includes the adapter, tests, reproducible inputs, and a breakdown of every request:
https://github.com/garrytan/gbrain/pull/5178
Would love feedback on the scoring
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