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Weave Router matches Astra on coding-agent benchmarks at roughly half the cost

news.ycombinator.com 9 min read Editor score 8/10

Weave Router 2.0 switches models for coding-agent tasks and reports equivalent pass rates to Astra, at 52–54% of its cost and 2.2–2.5× its speed across two benchmarks. If those results hold, routing could materially improve coding-agent cost and latency.

What

Weave Router 2.0 plugs into coding agents and routes work among language models based on the session’s needs.

How

A hidden Markov model traces session state, then a classifier maps the session to a bucket of similar models, shrinking the routing search space.

Why it matters

The router reports Astra-equivalent pass rates at lower cost and faster completion on Terminal Bench and SWE Atlas.

Read on news.ycombinator.com → Hacker News · 32 comments

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