yassai
Hybrid Token-Efficient Routing Agent
yassai is an AI agent built on two principles: the simplest action space that is still fully capable, and the fewest tokens spent to reach a correct answer. A small custom classifier runs in-process and tags every task with its capability categories, enabling per-category routing, reasoning calibration, and prompt tailoring. Two fine-tuned local models do the work: a MiniCPM5-1B tool lane that solves maths and logic through executed code, and a Qwen3.5-2B assist lane for everything else. Deterministic evidence gates verify each answer before it is trusted, and only gate-rejected tasks fall through to a single remote insurance call, so tokens are spent on answers rather than orchestration overhead.
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