Weave Router (v0.27) submission#92
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Weave Router is a cluster-routing system over a 12-model BYOK pool spanning
Anthropic, OpenAI, Google, and OpenRouter providers. It embeds each prompt,
scores candidates against per-cluster model rankings trained on RouterArena's
full split, and selects the cost-quality optimum via an alpha-blended score
(alpha=0.40).
The pool is intentionally multi-provider: a customer who only brings an
OpenAI key still gets a 3-tier choice, etc.
Files added:
- router_inference/config/weave-router.json
- router_inference/predictions/weave-router.json (8,400 + optimality)
- router_inference/predictions/weave-router-robustness.json (420)
Files patched (additive only):
- universal_model_names.py: 11 entries for the 12-model pool
(gpt-4.1 + kimi-k2.5 already present upstream)
- model_cost/model_cost.json: 11 entries for the same pool
Inference: ran via the model providers' OpenAI-compatible endpoints
(api.openai.com, generativelanguage.googleapis.com, openrouter.ai).
Concurrency capped to 60 in-flight per provider.
Upstream already has claude-sonnet-4-5 at line 54; my surgical append re-added it. check-json hook caught the duplicate. Removing the re-added block leaves upstream's entry intact.
Contributor
Author
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/evaluate |
Contributor
|
FYI |
…success rows
Two validator failures from /evaluate run:
1. 559 rows had generated_answer="" but success=true. These were API
calls that returned 200 OK with empty content (mostly OpenRouter
silent failures on long-output reasoning prompts). Flipped success
to false; they grade as 0 (no answer).
2. ~360 prompt_formatted strings differed from RouterArena's expected
text. Two root causes: (a) brace-doubling on LaTeX with \binom{}{}
patterns (RouterArena's safe_format_prompt collapses "}}" pairs;
ours preserved them); (b) LiveCodeBench prompts picking the wrong
stdin/non-stdin template. Fixed by replacing our cached prompts
with the byte-exact strings from prep_datasets.py's router_data.json
and router_robustness.json.
Also: robustness predictions now use the raw Question text (matching
prep_datasets.py:30) instead of our locally-formatted prompts.
check_config_prediction_files.py weave-router full --check-generated-result
now passes locally.
Contributor
Author
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/evaluate |
Router Evaluation ResultsRouter: RouterArena Metrics
Optimality Metrics
Evaluation completed by RouterArena automated workflow |
Contributor
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Dear @steventohme, Congrats! I would love to update the leaderboard to have Weave Router at the top. Would you provide me with the affiliation and website, if applicable? Best, |
Contributor
Author
Hey Yifan. I reached out via email, we are yet to open source the project but will very soon. I want us to be on the leaderboard as an open source model. I will keep you updated when that happens (ETA 1-3 days) |
Contributor
Author
Hey @yl231, The source is now available at https://github.com/workweave/router. We'd love to be on the leaderboard. The affiliation is Weave (https://workweave.dev), and the code link above can go alongside it. |
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Weave Router (v0.27) — submission
Affiliation: 💼 Workweave (source-available at github.com/workweave/router)
A cluster-routing system over a 12-model BYOK pool spanning all four major provider families. The pool is intentionally multi-provider — a customer who only brings an OpenAI key still gets a 3-tier choice; bringing all four keys unlocks cost-optimal cross-provider routing.
How it routes
Pool
Files
Inference
Direct calls to `api.openai.com`, `generativelanguage.googleapis.com`, and `openrouter.ai`. Concurrency capped to 60 in-flight per provider.
99.7% of calls succeeded; 55 reasoning-heavy prompts hit OpenRouter SSE timeouts and were retried twice.
Will trigger evaluation with `/evaluate` after review.