Suspend Paix2 (#164) from the leaderboard pending integrity review (#211) (#212)

Removes the Paix2 row from the ranked table (KT-ModelRouter moves to #1),
adds a note pointing to #211, and drops Paix2 from the website manifest.
Prediction and config files are kept for the review and a possible restore.

Co-authored-by: Louie Lu <yl231@datalab2.cs.rice.edu>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: 3 people

README.md

@@ -37,38 +37,39 @@ For more details, please see our [website](https://routeworks.github.io/leaderbo
 
 | Rank | Router | Affiliation | Acc-Cost Arena | Accuracy | Cost/1K Queries | Optimal Selection | Optimal Cost | Optimal Accuracy | Latency | Robustness |
 |------|--------------------|-----------------------------|--------|----------|---------|-----------------|--------------|----------------|---------|------------|
-| 🥇 | [Paix2]() | 👤 [@xufan866](https://github.com/xufan866) | 77.63 | 79.69 | $0.27 | 89.67 | 62.92 | 100.00 | — | 77.86 |
-| 🥈 | [KT-ModelRouter](https://github.com/KT-A-Autonomous-Tech-Team/ModelRouter) | 👤 [@DusanBaek](https://github.com/DusanBaek) | 76.28 | 78.14 | $0.27 | — | — | — | — | 80.48 |
-| 🥉 | [Sqwish Router](https://www.sqwish.ai/) | 👤 [@namitha-sqwish](https://github.com/namitha-sqwish) | 76.21 | 79.76 | $0.70 | 9.04 | 23.49 | 94.07 | — | 51.67 |
-| 4 | [Divyam]() | 👤 [@samikd](https://github.com/samikd) | 75.85 | 78.59 | $0.48 | 4.93 | 16.03 | 93.43 | — | 98.33 |
-| 5 | [Cross-Router]() | 👤 [@JiaHg](https://github.com/JiaHg) | 75.75 | 78.14 | $0.40 | 17.66 | 45.49 | 90.31 | — | 67.14 |
-| 6 | [vLLM‑SR](https://vllm-semantic-router.com/) [[Code]](https://github.com/vllm-project/semantic-router) [[HF]](https://huggingface.co/llm-semantic-router) | 🎓 vLLM SR Team | 74.86 | 77.18 | $0.42 | 16.81 | 25.10 | 89.37 | — | 67.62 |
-| 7 | [nadir-caliper]() | 👤 [@doramirdor](https://github.com/doramirdor) | 74.55 | 75.84 | $0.22 | — | — | — | — | 79.76 |
-| 8 | [AgentForge Router]() | 👤 [@YangY-Z](https://github.com/YangY-Z) | 74.13 | 74.72 | $0.13 | 17.84 | 52.47 | 98.68 | — | 40.48 |
-| 9 | [BARouter]() | 👤 [@zulk2002](https://github.com/zulk2002) | 73.79 | 75.72 | $0.36 | 64.41 | 67.13 | 93.84 | — | 68.81 |
-| 10 | [Weave Router](https://workweave.ai) | 🎓 Weave | 72.82 | 76.32 | $0.94 | — | — | — | — | 100.00 |
-| 11 | [Nadir Router](https://github.com/NadirRouter/NadirClaw) | 🎓 NadirRouter | 72.29 | 75.01 | $0.68 | — | — | — | — | 25.48 |
-| 12 | [OrcaRouter‑Adaptive](https://www.orcarouter.ai/) [[Code]](https://github.com/Continuum-AI-Corp/OrcaRouter-Lite) [[Paper]](https://arxiv.org/abs/2605.30736) [[X]](https://x.com/orcarouter) | 🎓 [Continuum AI](https://www.continuum01.ai/) | 72.08 | 75.54 | $1.00 | — | — | — | — | 22.62 |
-| 13 | [Hybrid Router]() | 👤 [@mikemao27](https://github.com/mikemao27) | 72.08 | 71.38 | $0.04 | 89.87 | 94.19 | 92.81 | — | 96.67 |
-| 14 | [R2-Router](https://arxiv.org/abs/2602.02823/) | 🎓 UCF | 71.60 | 71.23 | $0.06 | 24.51 | 48.70 | 99.85 | — | 45.71 |
-| 15 | [LLM Router](https://github.com/ypollak2/llm-router) [[PyPI]](https://pypi.org/project/llm-routing/) | 👤 [@ypollak2](https://github.com/ypollak2) | 71.26 | 72.05 | $0.20 | 18.01 | 20.46 | 89.13 | — | 30.00 |
-| 16 | [cruq-router]() | 👤 [@nabaruns](https://github.com/nabaruns) | 70.77 | 71.35 | $0.18 | — | — | — | — | 81.67 |
-| 17 | [chuzom-solo-v32]() | 👤 [@ypollak2](https://github.com/ypollak2) | 70.61 | 70.59 | $0.10 | — | — | — | — | 100.00 |
-| 18 | [Azure-Model-Router](https://ai.azure.com/catalog/models/model-router) [[Web]](https://learn.microsoft.com/en-us/azure/ai-foundry/openai/concepts/model-router) | 💼 Microsoft | 70.42 | 72.94 | $0.73 | — | — | — | — | 71.43 |
-| 19 | [Auto Router]() | 👤 [@cxf2015](https://github.com/cxf2015) | 70.05 | 70.17 | $0.12 | 37.58 | 40.02 | 86.04 | — | 49.52 |
-| 20 | [Lynkr]() | 👤 [@vishalveerareddy123](https://github.com/vishalveerareddy123) | 67.65 | 68.41 | $0.29 | 10.97 | 16.08 | 84.48 | — | 92.38 |
-| 21 | [MIRT‑BERT](https://arxiv.org/pdf/2506.01048) [[Code]](https://github.com/Mercidaiha/IRT-Router) | 🎓 USTC | 66.89 | 66.88 | $0.15 | 3.44 | 19.62 | 78.18 | 27.03 | 61.19 |
-| 22 | [NIRT‑BERT](https://arxiv.org/pdf/2506.01048) [[Code]](https://github.com/Mercidaiha/IRT-Router) | 🎓 USTC | 66.12 | 66.34 | $0.21 | 3.83 | 14.04 | 77.88 | 10.42 | 49.29 |
-| 23 | [AsiaInfo-Router]() | 👤 [@Uncle-LL](https://github.com/Uncle-LL) | 65.87 | 75.20 | $8.54 | — | — | — | — | 69.52 |
-| 24 | [GPT‑5](https://openai.com/index/introducing-gpt-5/) | 💼 OpenAI | 64.32 | 73.96 | $10.02 | — | — | — | — | — |
-| 25 | [CARROT](https://arxiv.org/abs/2502.03261) [[Code]](https://github.com/somerstep/CARROT) [[HF]](https://huggingface.co/CARROT-LLM-Routing) | 🎓 UMich | 63.87 | 67.21 | $2.06 | 2.68 | 6.77 | 78.63 | 1.50 | 89.05 |
-| 26 | [Chayan](https://huggingface.co/adaptive-classifier/chayan) [[HF]](https://huggingface.co/adaptive-classifier/chayan) | 🎓 Adaptive Classifier | 63.83 | 64.89 | $0.56 | 43.03 | 43.75 | 88.74 | — | — |
-| 27 | [RouterBench‑MLP](https://arxiv.org/pdf/2403.12031) [[Code]](https://github.com/withmartian/routerbench) [[HF]](https://huggingface.co/datasets/withmartian/routerbench) | 🎓 Martian | 57.56 | 61.62 | $4.83 | 13.39 | 24.45 | 83.32 | 90.91 | 80.00 |
-| 28 | [NotDiamond](https://www.notdiamond.ai/) | 💼 NotDiamond | 57.29 | 60.83 | $4.10 | 1.55 | 2.14 | 76.81 | — | 55.91 |
-| 29 | [GraphRouter](https://arxiv.org/abs/2410.03834) [[Code]](https://github.com/ulab-uiuc/GraphRouter) | 🎓 UIUC | 57.22 | 57.00 | $0.34 | 4.73 | 38.33 | 74.25 | 2.70 | 94.29 |
-| 30 | [RouterBench‑KNN](https://arxiv.org/pdf/2403.12031) [[Code]](https://github.com/withmartian/routerbench) [[HF]](https://huggingface.co/datasets/withmartian/routerbench) | 🎓 Martian | 55.48 | 58.69 | $4.27 | 13.09 | 25.49 | 78.77 | 1.33 | 83.33 |
-| 31 | [RouteLLM](https://arxiv.org/abs/2406.18665) [[Code]](https://github.com/lm-sys/RouteLLM) [[HF]](https://huggingface.co/routellm) | 🎓 Berkeley | 48.07 | 47.04 | $0.27 | 99.72 | 99.63 | 68.76 | 0.40 | 100.00 |
-| 32 | [RouterDC](https://arxiv.org/abs/2409.19886) [[Code]](https://github.com/shuhao02/RouterDC) | 🎓 SUSTech | 33.75 | 32.01 | $0.07 | 39.84 | 73.00 | 49.05 | 10.75 | 85.24 |
+| 🥇 | [KT-ModelRouter](https://github.com/KT-A-Autonomous-Tech-Team/ModelRouter) | 👤 [@DusanBaek](https://github.com/DusanBaek) | 76.28 | 78.14 | $0.27 | — | — | — | — | 80.48 |
+| 🥈 | [Sqwish Router](https://www.sqwish.ai/) | 👤 [@namitha-sqwish](https://github.com/namitha-sqwish) | 76.21 | 79.76 | $0.70 | 9.04 | 23.49 | 94.07 | — | 51.67 |
+| 🥉 | [Divyam]() | 👤 [@samikd](https://github.com/samikd) | 75.85 | 78.59 | $0.48 | 4.93 | 16.03 | 93.43 | — | 98.33 |
+| 4 | [Cross-Router]() | 👤 [@JiaHg](https://github.com/JiaHg) | 75.75 | 78.14 | $0.40 | 17.66 | 45.49 | 90.31 | — | 67.14 |
+| 5 | [vLLM‑SR](https://vllm-semantic-router.com/) [[Code]](https://github.com/vllm-project/semantic-router) [[HF]](https://huggingface.co/llm-semantic-router) | 🎓 vLLM SR Team | 74.86 | 77.18 | $0.42 | 16.81 | 25.10 | 89.37 | — | 67.62 |
+| 6 | [nadir-caliper]() | 👤 [@doramirdor](https://github.com/doramirdor) | 74.55 | 75.84 | $0.22 | — | — | — | — | 79.76 |
+| 7 | [AgentForge Router]() | 👤 [@YangY-Z](https://github.com/YangY-Z) | 74.13 | 74.72 | $0.13 | 17.84 | 52.47 | 98.68 | — | 40.48 |
+| 8 | [BARouter]() | 👤 [@zulk2002](https://github.com/zulk2002) | 73.79 | 75.72 | $0.36 | 64.41 | 67.13 | 93.84 | — | 68.81 |
+| 9 | [Weave Router](https://workweave.ai) | 🎓 Weave | 72.82 | 76.32 | $0.94 | — | — | — | — | 100.00 |
+| 10 | [Nadir Router](https://github.com/NadirRouter/NadirClaw) | 🎓 NadirRouter | 72.29 | 75.01 | $0.68 | — | — | — | — | 25.48 |
+| 11 | [OrcaRouter‑Adaptive](https://www.orcarouter.ai/) [[Code]](https://github.com/Continuum-AI-Corp/OrcaRouter-Lite) [[Paper]](https://arxiv.org/abs/2605.30736) [[X]](https://x.com/orcarouter) | 🎓 [Continuum AI](https://www.continuum01.ai/) | 72.08 | 75.54 | $1.00 | — | — | — | — | 22.62 |
+| 12 | [Hybrid Router]() | 👤 [@mikemao27](https://github.com/mikemao27) | 72.08 | 71.38 | $0.04 | 89.87 | 94.19 | 92.81 | — | 96.67 |
+| 13 | [R2-Router](https://arxiv.org/abs/2602.02823/) | 🎓 UCF | 71.60 | 71.23 | $0.06 | 24.51 | 48.70 | 99.85 | — | 45.71 |
+| 14 | [LLM Router](https://github.com/ypollak2/llm-router) [[PyPI]](https://pypi.org/project/llm-routing/) | 👤 [@ypollak2](https://github.com/ypollak2) | 71.26 | 72.05 | $0.20 | 18.01 | 20.46 | 89.13 | — | 30.00 |
+| 15 | [cruq-router]() | 👤 [@nabaruns](https://github.com/nabaruns) | 70.77 | 71.35 | $0.18 | — | — | — | — | 81.67 |
+| 16 | [chuzom-solo-v32]() | 👤 [@ypollak2](https://github.com/ypollak2) | 70.61 | 70.59 | $0.10 | — | — | — | — | 100.00 |
+| 17 | [Azure-Model-Router](https://ai.azure.com/catalog/models/model-router) [[Web]](https://learn.microsoft.com/en-us/azure/ai-foundry/openai/concepts/model-router) | 💼 Microsoft | 70.42 | 72.94 | $0.73 | — | — | — | — | 71.43 |
+| 18 | [Auto Router]() | 👤 [@cxf2015](https://github.com/cxf2015) | 70.05 | 70.17 | $0.12 | 37.58 | 40.02 | 86.04 | — | 49.52 |
+| 19 | [Lynkr]() | 👤 [@vishalveerareddy123](https://github.com/vishalveerareddy123) | 67.65 | 68.41 | $0.29 | 10.97 | 16.08 | 84.48 | — | 92.38 |
+| 20 | [MIRT‑BERT](https://arxiv.org/pdf/2506.01048) [[Code]](https://github.com/Mercidaiha/IRT-Router) | 🎓 USTC | 66.89 | 66.88 | $0.15 | 3.44 | 19.62 | 78.18 | 27.03 | 61.19 |
+| 21 | [NIRT‑BERT](https://arxiv.org/pdf/2506.01048) [[Code]](https://github.com/Mercidaiha/IRT-Router) | 🎓 USTC | 66.12 | 66.34 | $0.21 | 3.83 | 14.04 | 77.88 | 10.42 | 49.29 |
+| 22 | [AsiaInfo-Router]() | 👤 [@Uncle-LL](https://github.com/Uncle-LL) | 65.87 | 75.20 | $8.54 | — | — | — | — | 69.52 |
+| 23 | [GPT‑5](https://openai.com/index/introducing-gpt-5/) | 💼 OpenAI | 64.32 | 73.96 | $10.02 | — | — | — | — | — |
+| 24 | [CARROT](https://arxiv.org/abs/2502.03261) [[Code]](https://github.com/somerstep/CARROT) [[HF]](https://huggingface.co/CARROT-LLM-Routing) | 🎓 UMich | 63.87 | 67.21 | $2.06 | 2.68 | 6.77 | 78.63 | 1.50 | 89.05 |
+| 25 | [Chayan](https://huggingface.co/adaptive-classifier/chayan) [[HF]](https://huggingface.co/adaptive-classifier/chayan) | 🎓 Adaptive Classifier | 63.83 | 64.89 | $0.56 | 43.03 | 43.75 | 88.74 | — | — |
+| 26 | [RouterBench‑MLP](https://arxiv.org/pdf/2403.12031) [[Code]](https://github.com/withmartian/routerbench) [[HF]](https://huggingface.co/datasets/withmartian/routerbench) | 🎓 Martian | 57.56 | 61.62 | $4.83 | 13.39 | 24.45 | 83.32 | 90.91 | 80.00 |
+| 27 | [NotDiamond](https://www.notdiamond.ai/) | 💼 NotDiamond | 57.29 | 60.83 | $4.10 | 1.55 | 2.14 | 76.81 | — | 55.91 |
+| 28 | [GraphRouter](https://arxiv.org/abs/2410.03834) [[Code]](https://github.com/ulab-uiuc/GraphRouter) | 🎓 UIUC | 57.22 | 57.00 | $0.34 | 4.73 | 38.33 | 74.25 | 2.70 | 94.29 |
+| 29 | [RouterBench‑KNN](https://arxiv.org/pdf/2403.12031) [[Code]](https://github.com/withmartian/routerbench) [[HF]](https://huggingface.co/datasets/withmartian/routerbench) | 🎓 Martian | 55.48 | 58.69 | $4.27 | 13.09 | 25.49 | 78.77 | 1.33 | 83.33 |
+| 30 | [RouteLLM](https://arxiv.org/abs/2406.18665) [[Code]](https://github.com/lm-sys/RouteLLM) [[HF]](https://huggingface.co/routellm) | 🎓 Berkeley | 48.07 | 47.04 | $0.27 | 99.72 | 99.63 | 68.76 | 0.40 | 100.00 |
+| 31 | [RouterDC](https://arxiv.org/abs/2409.19886) [[Code]](https://github.com/shuhao02/RouterDC) | 🎓 SUSTech | 33.75 | 32.01 | $0.07 | 39.84 | 73.00 | 49.05 | 10.75 | 85.24 |
+
+> **Under review:** Paix2 ([#164](https://github.com/RouteWorks/RouterArena/pull/164)) is temporarily removed from the ranking pending an integrity review. See [#211](https://github.com/RouteWorks/RouterArena/issues/211).
 
 🎓 Open-source  💼 Closed-source 
 

leaderboard_manifest.yaml

@@ -165,15 +165,6 @@ routers:
       affiliation: "@vishalveerareddy123"
       github_url: "https://github.com/vishalveerareddy123"
 
-  - readme_name: "Paix2"
-    website_name: "Paix2"
-    prediction: "Paix2-router"
-    category_key: "paix2"
-    flip_key: "paix2"
-    website:
-      affiliation: "@xufan866"
-      github_url: "https://github.com/xufan866"
-
   - readme_name: "Divyam"
     website_name: "Divyam"
     prediction: "divyam-router"