Weave Router
ELv2 on-box embedder proxy that routes each prompt to the right model
AI Agents / Tooling · Open-Core · 5.6k
Reviewed 2026-09-20 · last push 2026-10-18 · repo checked 2026-10-19
What's Good
Go proxy from Weave that sits on the endpoint you already use, claims sub-50ms routing, and targets cost cuts by sending easy work to cheaper models. Useful when an agent farm pays for one default frontier model on every call.
The Catch
Elastic License 2.0 is source-available, not OSI open-source — you may not offer Weave Router as a hosted/managed service under ELv2 without permission. Vs LiteLLM: LiteLLM is the broader multi-provider gateway/SDK; Weave Router's wedge is per-prompt model selection via on-box embeddings. Routing quality still depends on your traffic mix and evaluation.
Verdict
ELv2 source-available model router. Strong cost lever for agent fleets; no managed offering without a license review.
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