Submit R**2: Reasonometry Router

[sashakolpakov]

R**2: Reasonometry Router

Prediction-only submission for a private, query-only, single-round router.

• Router policy was frozen before RouterArena evaluation-data access.
• Training used xRouteBench TRAIN only.
• No RouterArena prompts, labels, responses, scores, or per-example outcomes were used for training, fitting, tuning, or policy selection.
• RouterArena prompts were used only to execute the frozen inference policy.
• Full predictions: 8,400/8,400 successful generated results.
• Robustness predictions: 420/420.
• Maximum reported output tokens: 2,048.
• The submission exposes only the required config and prediction artifacts; implementation remains private.

Both current official config/prediction validators pass for full and robustness.

[sashakolpakov]

/evaluate

[github-actions]

Router Evaluation Results

Router: r2-reasonometry-router
Dataset Split: full

RouterArena Metrics

Metric	Value
RouterArena Score	0.6790
Accuracy	68.31%
Total Cost	$1.744850
Avg Cost per Query	$0.000208
Avg Cost per 1K Queries	$0.2077
Number of Queries	8400
Abnormal Entries	0
Robustness Score	0.8738

---

Evaluation completed by RouterArena automated workflow