OSS
weave-os/router promises sub-50ms model routing and 40-70% cost cuts from an endpoint swap, with one release in five months
weave-os/router is a Go model router for agentic systems that claims it picks the right model per prompt in under 50ms and cuts costs 40-70% with only an endpoint change. It sits at 4,489 stars, 125 forks and 126 open issues since 2026-04-27, pushed this morning. The only tagged release is 'hmm-model-v1' from 2026-07-13, and the issue count matching the fork count says people are trying it and running into things, so treat the cost figure as vendor-stated until someone publishes a measurement.
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