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Agents · tool hallucination signal

Agent Arena signal scores from the official dataset. Each signal is a separate measurement; it is not a success percentage.

58 entries · IPS score · Higher is better

Source publication: 2026-11-04. Retrieved 2026-11-05.

Source: Arena (lmarena-ai) · CC-BY-4.0.

Ranks use confidence bounds. Several models can share a rank; the rows within a shared rank are displayed by score.

Agents · tool hallucination signal · IPS score
Significance rankModel / evaluated variantIPS score95% confidence intervalObservations
1GLM-5.3-Flashzai0.0089030.008081 – 0.00972511,871,656
1Grok 4.6 (xHigh)xai0.0089030.008081 – 0.0097253,557,471
1GPT-6 Luna (Low)openai0.0089030.008081 – 0.0097252,732,091
1GLM-5.3 (Max)zai0.0089030.008081 – 0.00972510,241,529
1GPT-6.1 Sol (Max)openai0.0089030.008081 – 0.0097252,555,443
1GPT-6 Astra (Max)openai0.0089030.008081 – 0.0097251,194,324
1GPT-6.1 Terra (Max)openai0.0089030.008081 – 0.0097256,051,267
1Kimi K3.1 Pro (Max)moonshot0.0089030.008081 – 0.0097254,948,298
1DeepSeek-V4-Pro (High, 20260813)deepseek0.0089030.008081 – 0.009725812,009
1GPT-5.6 Sol (xHigh)openai0.0089030.008081 – 0.0097256,106,979
1GPT-6 Luna (Medium)openai0.0089030.008081 – 0.0097257,544,280
1Kimi K3 (Max)moonshot0.0089020.00808 – 0.00972414,767,204
1GPT-6 Sol (Max)openai0.0089010.008079 – 0.0097232,813,701
1Grok 4.7 (xHigh)xai0.0088870.008064 – 0.0097093,300,736
1GPT-6 Luna (Max)openai0.0088780.008055 – 0.009736,929,317
1GLM-5.2 (Max)zai0.0088680.008043 – 0.0096938,374,554
1GPT-5.6 Terra (xHigh)openai0.0087540.007905 – 0.0096043,291,847
1Muse Spark 1.1meta0.0085120.007617 – 0.0094087,669,418
1Muse Spark 1.3 (Max)meta0.0084380.00755 – 0.0093257,804,971
1Claude Opus 5 (Max)anthropic0.008430.007507 – 0.0093524,255,614
1Claude Fable 5.1 (Max)anthropic0.0076790.006376 – 0.0089832,223,941
1Claude Sonnet 5.5 (Max)anthropic0.0076320.00628 – 0.0089851,040,676
1Muse Spark 1.2 (xHigh)meta0.0072420.005166 – 0.0093173,315,530
1Claude Opus 5.5 (Max)anthropic0.0065730.004703 – 0.0084432,043,959
1Claude Fable 5 (High)anthropic0.0061250.004138 – 0.0081123,140,962
21Gemini 3.7 Flash (High)google0.0058450.004396 – 0.0072945,594,205
21Gemini 4 Carbon (High)google0.0051280.003127 – 0.0071286,732,336
21Claude Sonnet 5 (High)anthropic0.0051190.003673 – 0.0065644,781,638
23Gemini 4 Argon (High)google0.0041660.00269 – 0.0056435,809,460
23Gemini 3.8 Flash (High)google0.0041150.002526 – 0.0057047,341,646
25DeepSeek-V4.1-Flash-20261017 (Max)deepseek0.0034830.002426 – 0.0045417,216,312
24MiniMax-M3.1-Flashminimax0.0026060.000389 – 0.0048222,191,528
29Hy4 previewtencent0.000898-0.001114 – 0.0029110,128,437
30Qwen3.8-27Balibaba0.000757-0.001146 – 0.002667,754,962
23Gemini 3.1 Pro Previewgoogle-0.000254-0.006393 – 0.0058852,736,062
32MiMo-V2.6-Proxiaomi-0.000567-0.002963 – 0.0018294,554,607
1Muse Wonder Full (Max)meta-0.001526-0.013961 – 0.010915,071,624
1Mistral Large 4mistral-0.00161-0.012066 – 0.008845386,267
32Qwen3.7-Maxalibaba-0.002866-0.007023 – 0.0012912,107,566
28Hy4tencent-0.003706-0.010677 – 0.0032651,314,198
33Step 5 Previewstepfun-0.004843-0.008598 – -0.0010882,427,836
36Qwen3.8-Maxalibaba-0.007335-0.009506 – -0.0051647,343,430
1Muse Wonder (Max)meta-0.007339-0.023436 – 0.0087591,745,681
38Qwen3.8-Flash-Nextalibaba-0.008963-0.010838 – -0.00708815,320,065
36MiMo-V2.5-Proxiaomi-0.009511-0.013193 – -0.005832,319,225
35Beam 1.0 501B A23Breflection-0.010394-0.019257 – -0.00153555,707
19MiniMax-M3minimax-0.01354-0.03468 – 0.00763,464,873
38Claude Haiku 5.5 (High)anthropic-0.014679-0.021543 – -0.0078153,371,105
21Nemotron 3 Ultranvidia-0.017226-0.041399 – 0.006948209,335
37Spark-X2.6synlan-0.019553-0.032155 – -0.00695856,437
36Inklingthinky-0.020014-0.034229 – -0.00581,645,936
39Qwen3.7-Plusalibaba-0.021772-0.034357 – -0.0091861,177,145
43Inkling-Smallthinky-0.02793-0.043249 – -0.012611499,930
46Solar Pro 4upstage-0.037426-0.055087 – -0.019766488,500
46MiMo-V2.6-Flashxiaomi-0.041881-0.063616 – -0.0201473,121,990
48Mistral Medium 3.5mistral-0.045178-0.065144 – -0.025212599,909
48Hy3tencent-0.046969-0.06997 – -0.0239691,149,676
55NVIDIA-Nemotron-3.5-Super-VL-120B-A12B (NVFP4)nvidia-0.072922-0.086881 – -0.0589631,336,586

What this ranking can tell you

  • The population is the models in this source board, including variants and models without an available API price.
  • Ranks use the published confidence bounds: one plus the number of models whose lower bound exceeds this model’s upper bound. Shared ranks are not proof of equal performance.

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