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weave-os
router
Weave's Go model router: drop-in proxy speaking Anthropic, OpenAI and Gemini APIs that scores each request with an on-box ONNX embedder (Avengers-Pro clusters) and routes to the cheapest fit model.
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Curator's take
Choose it when the goal is *smart* routing, not just multi-provider fan-out: an in-process embedder classifies each action and picks a model per request in under 50ms, with a `/v1/route` endpoint to inspect the decision and OTLP traces out of the box. `npx @weave-os/router` wires Claude Code, Codex, opencode or pi in one step; self-hosting needs Postgres (and Pub/Sub for multi-replica). Don't reach for it if you want a plain gateway (litellm), free-tier pooling (omniroute), or to route through subscription CLIs (cliproxyapi) — and note the Elastic License v2, which is not OSI open source, and that the frictionless quickstart is the hosted service.
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