Hallucination

30 scenarios across 3 subcategories. 202 models scored.

Subcategories

Subcategory Avg Score Best Model Best Score
False Positives 78.49% Claude Haiku 5.5 (Adaptive) 99.06%
Content Invention 97.77% Qwen 3.8 Max (Reasoning, XHigh) 100.00%
Output Corruption 99.70% Claude Opus 5.5 (Reasoning) 100.00%

Model Leaderboard

All models ranked by their Hallucination category score.

# Model Hallucination False Positives Content Invention Output Corruption Overall
1 o4 Mini High 99.53% 98.59% 100.00% 100.00% 88.78%
2 Z.AI GLM 5.3 Flash (Reasoning, Low) 99.36% 98.13% 100.00% 99.94% 88.76%
3 Z.AI GLM 5 Turbo 99.32% 97.97% 100.00% 99.99% 93.29%
4 Claude Opus 4.6 (Reasoning) 99.06% 97.19% 100.00% 100.00% 95.06%
5 Grok 4.5 (Reasoning, High) 99.06% 97.19% 100.00% 100.00% 94.12%
6 Grok 4.5 (Reasoning, Low) 99.01% 97.03% 100.00% 100.00% 90.94%
7 Z.AI GLM 5.2 (Reasoning, High) 98.99% 96.98% 100.00% 99.98% 93.41%
8 Z.AI GLM 5.1 98.84% 96.51% 100.00% 100.00% 93.74%
9 Gemma 4 26B (Reasoning) 98.79% 96.41% 100.00% 99.95% 89.02%
10 GPT-5.4 Mini (Reasoning, Low) 98.78% 96.36% 100.00% 99.98% 83.57%
11 Claude Opus 4.7 (Reasoning) 98.69% 96.09% 100.00% 99.98% 92.53%
12 Gemini 4 Argon (Reasoning, Medium) 98.69% 96.25% 100.00% 99.81% 93.81%
13 GPT-5.6 Luna (Reasoning, Medium) 98.65% 95.94% 100.00% 100.00% 90.61%
14 Muse Spark 1.3 (Reasoning, Medium) 98.57% 95.73% 100.00% 100.00% 94.06%
15 o4 Mini 98.54% 95.63% 100.00% 100.00% 86.56%
16 Qwen 3.5 Plus (2026-04-20) 98.38% 96.25% 100.00% 98.89% 89.79%
17 GPT-5 Mini 98.28% 94.85% 100.00% 100.00% 91.31%
18 Grok 4.6 (Reasoning, High) 98.25% 94.84% 100.00% 99.91% 92.76%
19 GPT-5.4 Mini (Reasoning) 98.11% 94.32% 100.00% 100.00% 89.82%
20 Z.AI GLM 5 98.04% 94.11% 100.00% 100.00% 89.60%
21 Gemini 3.7 Flash (Reasoning, Medium) 97.97% 93.91% 100.00% 100.00% 94.85%
22 Muse Spark 1.2 (Reasoning, Medium) 97.93% 97.37% 96.43% 99.98% 94.71%
23 Grok 4.3 (Reasoning) 97.86% 93.59% 100.00% 100.00% 90.99%
24 MiniMax M3 97.83% 93.49% 100.00% 100.00% 90.45%
25 Gemini 2.5 Flash (Reasoning) 97.79% 93.44% 100.00% 99.94% 84.14%
26 Xiaomi MIMO v2.6 Flash 97.74% 93.44% 100.00% 99.78% 87.31%
27 Kimi K3 (Reasoning, Low) 97.73% 93.28% 100.00% 99.92% 92.07%
28 Claude Opus 5.5 (Reasoning) 97.63% 97.66% 95.24% 100.00% 96.43%
29 GPT-OSS 120B 97.63% 92.97% 100.00% 99.92% 84.81%
30 Xiaomi MIMO v2.5 97.61% 92.92% 100.00% 99.93% 83.95%
31 ByteDance Seed 1.6 97.57% 92.71% 100.00% 100.00% 89.59%
32 GPT-5.2 97.55% 92.64% 100.00% 100.00% 89.45%
33 Qwen 3.6 27B 97.42% 92.33% 100.00% 99.95% 88.33%
34 Claude Opus 4.8 (Reasoning) 97.41% 92.24% 100.00% 100.00% 92.33%
35 Gemini 3.6 Flash (Reasoning) 97.34% 92.03% 100.00% 100.00% 94.90%
36 Nemotron 3 Super 97.34% 92.03% 100.00% 100.00% 81.69%
37 Claude Opus 5 (Reasoning, Low) 97.34% 92.03% 100.00% 99.97% 92.06%
38 Claude Opus 4.8 (Reasoning, Low) 97.33% 91.98% 100.00% 100.00% 91.89%
39 Qwen 3.7 Max 97.15% 91.51% 100.00% 99.95% 94.55%
40 Xiaomi MIMO v2.5 Pro 97.02% 91.05% 100.00% 100.00% 86.05%
41 Gemini 2.5 Flash Lite (Reasoning) 96.99% 95.78% 95.24% 99.96% 83.10%
42 GPT-5.4 Nano (Reasoning) 96.98% 90.95% 100.00% 100.00% 80.02%
43 Claude Sonnet 4.6 (Reasoning) 96.98% 90.94% 100.00% 100.00% 93.64%
44 Kimi K3 (Reasoning, High) 96.97% 90.91% 100.00% 100.00% 92.99%
45 DeepSeek V4 Flash (Reasoning) 96.92% 94.32% 96.43% 100.00% 88.06%
46 Aion 3.5 Mini (Reasoning, High) 96.91% 90.78% 100.00% 99.96% 92.36%
47 Gemini 3.8 Flash (Reasoning, Medium) 96.88% 90.63% 100.00% 100.00% 95.72%
48 Claude Opus 5 (Reasoning) 96.86% 90.57% 100.00% 100.00% 91.15%
49 Mistral Large 4.0 (Reasoning) 96.85% 90.60% 100.00% 99.95% 92.14%
50 Claude Opus 4.6 96.80% 90.40% 100.00% 100.00% 92.31%
51 Muse Spark 1.1 (Reasoning, Medium) 96.79% 97.50% 92.86% 100.00% 93.81%
52 Claude Sonnet 5 (Reasoning) 96.77% 90.31% 100.00% 100.00% 90.40%
53 Ember-1 (Reasoning, Max) 96.67% 90.00% 100.00% 100.00% 95.52%
54 Gemini 3.6 Flash (Reasoning, Minimal) 96.53% 89.59% 100.00% 100.00% 86.68%
55 GPT-6 Luna (Reasoning, Medium) 96.53% 89.58% 100.00% 100.00% 92.40%
56 Claude Sonnet 5 (Reasoning, Low) 96.44% 89.32% 100.00% 100.00% 90.16%
57 Gemma 4 31B (Reasoning) 96.37% 89.11% 100.00% 100.00% 89.64%
58 Thinking Machines Inkling (Reasoning) 96.34% 89.01% 100.00% 100.00% 90.78%
59 Grok 4.20 (Reasoning) 96.30% 88.89% 100.00% 100.00% 90.87%
60 GPT-6 Luna (Reasoning, High) 96.23% 88.70% 100.00% 100.00% 93.95%
61 GPT-5.1 96.22% 88.65% 100.00% 100.00% 90.73%
62 Muse Glimmer 30B (Reasoning, Medium) 96.19% 92.14% 96.43% 100.00% 88.81%
63 Aion 3.5 (Reasoning, High) 96.13% 88.39% 100.00% 100.00% 91.90%
64 Qwen 3.6 Flash 96.13% 88.39% 100.00% 100.00% 89.31%
65 Claude Haiku 5.5 (Adaptive) 96.12% 99.06% 89.29% 100.00% 89.37%
66 Claude Sonnet 5.5 (Reasoning) 96.09% 88.28% 100.00% 100.00% 92.77%
67 GPT-5 95.92% 87.76% 100.00% 100.00% 91.48%
68 GPT-5.6 Sol 95.87% 87.60% 100.00% 100.00% 90.76%
69 Qwen 3.6 Max Preview 95.86% 87.58% 100.00% 100.00% 93.72%
70 GPT-5.4 (Reasoning, Low) 95.71% 87.14% 100.00% 100.00% 90.91%
71 GPT-5.4 Nano (Reasoning, Low) 95.71% 87.13% 100.00% 100.00% 77.46%
72 Gemini 3.5 Flash (Reasoning) 95.61% 86.82% 100.00% 100.00% 93.35%
73 GPT-4.1 95.60% 86.82% 100.00% 99.97% 86.82%
74 Aion 3.0 95.57% 86.82% 100.00% 99.88% 88.78%
75 Grok 4.7 (Reasoning, High) 95.48% 86.43% 100.00% 100.00% 92.62%
76 Muse Spark 1.1 (Reasoning, Minimal) 95.34% 98.59% 87.50% 99.94% 91.43%
77 Z.AI GLM 5.3 (Reasoning, Max) 95.30% 85.91% 100.00% 100.00% 95.20%
78 DeepSeek V4.1 Flash (Reasoning, High) 95.27% 85.81% 100.00% 100.00% 94.30%
79 DeepSeek V4 Pro (Reasoning) 95.25% 86.88% 100.00% 98.89% 89.28%
80 GPT-5.4 (Reasoning) 95.22% 85.65% 100.00% 100.00% 93.85%
81 Z.AI GLM 5.3 Flash (Reasoning, Max) 95.12% 85.36% 100.00% 100.00% 94.28%
82 Gemma 4 31B 95.09% 85.26% 100.00% 100.00% 85.23%
83 Claude Sonnet 4.6 94.99% 84.99% 100.00% 99.97% 90.66%
84 GPT-5.6 Terra (Reasoning, Medium) 94.98% 84.95% 100.00% 100.00% 92.49%
85 GPT-6.1 Sol (Reasoning, Medium) 94.90% 88.28% 96.43% 100.00% 95.88%
86 MiniMax M2.5 94.72% 84.66% 100.00% 99.50% 86.71%
87 MiniMax M2.7 94.69% 84.34% 100.00% 99.72% 86.23%
88 Gemini 3.1 Pro (Preview) 94.53% 83.59% 100.00% 100.00% 94.08%
89 Kimi K2.6 94.43% 83.28% 100.00% 100.00% 92.57%
90 Z.AI GLM 4.6 94.42% 84.38% 100.00% 98.89% 87.64%
91 Thinking Machines Inkling Small (Reasoning, High) 94.39% 83.20% 100.00% 99.98% 87.39%
92 DeepSeek V4 Flash 0731 (Reasoning, High) 94.32% 90.10% 92.86% 99.98% 87.97%
93 Z.AI GLM 4.7 94.23% 82.73% 100.00% 99.96% 87.67%
94 Gemma 4 26B 94.22% 82.67% 100.00% 100.00% 84.89%
95 Hy4 Preview (Reasoning, High) 94.17% 82.50% 100.00% 100.00% 94.80%
96 Aion 3.0 Mini 94.08% 88.15% 95.24% 98.85% 83.69%
97 Qwen 3.6 35B 94.07% 83.33% 100.00% 98.89% 87.66%
98 ByteDance Seed 2.0 Mini 94.07% 82.30% 100.00% 99.90% 85.69%
99 Qwen 3.7 Flash (Reasoning) 94.02% 83.28% 100.00% 98.78% 88.56%
100 Ministral 3 8B 94.02% 82.06% 100.00% 100.00% 69.98%
101 Kimi K2.5 94.01% 82.03% 100.00% 100.00% 90.86%
102 Z.AI GLM 4.5 Air 94.00% 83.12% 100.00% 98.87% 80.74%
103 Muse Wonder (Reasoning, Medium) 93.92% 81.77% 100.00% 100.00% 95.47%
104 GPT-6 Sol (Reasoning, Medium) 93.91% 81.72% 100.00% 100.00% 92.63%
105 Claude Opus 5 93.91% 81.72% 100.00% 100.00% 89.97%
106 Xiaomi MIMO v2.6 Pro 93.78% 81.51% 100.00% 99.84% 91.50%
107 GPT-5.6 Luna 93.37% 80.10% 100.00% 100.00% 85.06%
108 Qwen 3.5 122B 93.29% 79.87% 100.00% 100.00% 90.32%
109 Qwen 3.5 27B 93.29% 79.86% 100.00% 100.00% 90.05%
110 Inception Mercury 2 93.22% 98.13% 81.55% 99.99% 81.99%
111 Mistral Small 4 (Reasoning) 93.18% 83.11% 96.43% 100.00% 79.48%
112 Laguna S 2.1 93.17% 79.51% 100.00% 100.00% 79.99%
113 Aion 2.0 93.10% 86.41% 92.89% 100.00% 86.66%
114 Gemini 2.5 Pro 93.05% 79.16% 100.00% 100.00% 88.44%
115 GPT-5 Nano 92.99% 90.90% 88.10% 99.96% 80.16%
116 Claude Opus 4.7 92.95% 78.84% 100.00% 100.00% 89.90%
117 Qwen 3.8 Max (Reasoning, XHigh) 92.76% 78.28% 100.00% 100.00% 96.21%
118 Thinking Machines Inkling 92.70% 78.10% 100.00% 100.00% 73.96%
119 Gemini 3 Flash (Preview, Reasoning) 92.65% 77.99% 100.00% 99.97% 89.93%
120 GPT-6 Luna 92.57% 77.71% 100.00% 100.00% 83.73%
121 GPT-5.5 (Reasoning, Medium) 92.12% 76.35% 100.00% 100.00% 93.72%
122 Laguna XS 2.1 92.09% 83.48% 92.86% 99.93% 75.42%
123 Claude Haiku 4.5 91.93% 75.80% 100.00% 100.00% 83.36%
124 Ministral 8B 91.89% 75.68% 100.00% 100.00% 63.77%
125 Z.AI GLM 4.5 91.83% 76.65% 100.00% 98.85% 84.95%
126 Qwen 3.5 9B 91.81% 81.32% 96.43% 97.67% 84.05%
127 GPT-5.6 Sol (Reasoning, Medium) 91.72% 75.16% 100.00% 100.00% 95.15%
128 Qwen 3.8 Flash (Reasoning) 91.39% 75.27% 100.00% 98.89% 94.24%
129 GPT-5.5 (Reasoning, Low) 91.37% 74.11% 100.00% 100.00% 92.51%
130 Claude Haiku 5.5 (Reasoning, Medium) 91.20% 97.41% 76.19% 100.00% 84.17%
131 Claude Opus 4.5 91.03% 73.09% 100.00% 100.00% 89.60%
132 ByteDance Seed 1.6 Flash 90.83% 83.03% 89.88% 99.57% 70.92%
133 GPT-5.6 Terra 90.63% 71.90% 100.00% 100.00% 88.23%
134 Mistral Large 4.0 90.47% 71.55% 100.00% 99.87% 84.72%
135 Qwen 3.8 27B (Reasoning, XHigh) 90.29% 75.31% 100.00% 95.56% 92.91%
136 GPT-5.5 90.28% 70.85% 100.00% 100.00% 89.37%
137 GPT-4.1 Nano 90.07% 70.27% 100.00% 99.95% 69.90%
138 Claude Sonnet 4 90.04% 70.11% 100.00% 100.00% 87.64%
139 Qwen 3.5 397B A17B 90.04% 70.17% 100.00% 99.93% 91.09%
140 Z.AI GLM 4.7 Flash 90.00% 77.13% 92.86% 100.00% 82.21%
141 Claude Haiku 5.5 (Reasoning, Low) 89.61% 98.59% 70.24% 100.00% 84.75%
142 Gemini 3.5 Flash (Reasoning, Minimal) 89.55% 68.64% 100.00% 100.00% 85.88%
143 ByteDance Seed 2.0 Lite 89.50% 70.73% 100.00% 97.78% 84.27%
144 Mistral Medium 3.5 (Reasoning) 89.37% 68.10% 100.00% 100.00% 85.32%
145 DeepSeek V4 Pro 89.36% 68.09% 100.00% 99.98% 82.05%
146 GPT-6 Sol 89.32% 67.97% 100.00% 100.00% 90.05%
147 Qwen 3.5 35B 89.24% 74.87% 92.86% 100.00% 87.01%
148 Qwen 3 32B 89.06% 67.79% 100.00% 99.39% 79.37%
149 Mistral Medium 3.1 88.93% 66.78% 100.00% 100.00% 76.08%
150 DeepSeek V4 Pro 0813 (Reasoning, High) 88.77% 74.61% 92.88% 98.82% 90.21%
151 Claude Sonnet 5 88.74% 66.23% 100.00% 100.00% 87.34%
152 Qwen 3.5 Flash 88.70% 73.21% 92.90% 99.98% 85.66%
153 Nemotron 3 Nano 88.55% 85.80% 82.14% 97.72% 74.50%
154 Arcee AI: Trinity Mini 88.35% 65.05% 100.00% 100.00% 67.68%
155 Gemini 2.5 Flash Lite 88.08% 64.28% 100.00% 99.96% 79.91%
156 Gemini 3.1 Flash Lite 87.86% 63.57% 100.00% 100.00% 85.09%
157 Claude Opus 4 87.84% 63.52% 100.00% 100.00% 87.22%
158 Grok 4.3 87.79% 63.41% 100.00% 99.96% 78.00%
159 Claude Sonnet 4.5 87.78% 63.35% 100.00% 100.00% 87.54%
160 DeepSeek V4 Flash 87.73% 63.20% 100.00% 100.00% 82.02%
161 Gemini 3.1 Flash Lite (Reasoning) 87.63% 62.89% 100.00% 100.00% 85.91%
162 Mistral Medium 3.5 87.58% 62.75% 100.00% 100.00% 84.52%
163 Gemini 3.5 Flash Lite (Reasoning, Minimal) 87.57% 62.72% 100.00% 100.00% 84.45%
164 Gemini 3.5 Flash Lite (Reasoning) 87.49% 62.47% 100.00% 100.00% 84.34%
165 Gemini 3.1 Flash Lite (Preview) 87.29% 61.89% 100.00% 99.97% 85.41%
166 Hermes 3 405B 87.02% 61.06% 100.00% 100.00% 80.80%
167 GPT-5.4 Nano 86.86% 60.58% 100.00% 100.00% 72.16%
168 Mistral Small 3.2 24B 86.84% 62.38% 100.00% 98.14% 77.36%
169 Qwen 3.5 Plus (2026-02-15) 86.62% 60.20% 100.00% 99.65% 86.17%
170 GPT-5.4 86.32% 58.96% 100.00% 100.00% 84.31%
171 DeepSeek V3.2 86.25% 58.75% 100.00% 100.00% 82.22%
172 GPT-4.1 Mini 86.23% 58.70% 100.00% 100.00% 81.40%
173 GPT-4o, Aug. 6th (temp=1) 86.00% 58.17% 100.00% 99.82% 81.28%
174 DeepSeek V3 (2024-12-26) 85.69% 57.07% 100.00% 100.00% 82.62%
175 Gemini 3 Flash (Preview) 85.61% 56.88% 100.00% 99.95% 85.47%
176 DeepSeek V3.1 85.55% 56.76% 100.00% 99.89% 82.35%
177 Qwen 2.5 72B 85.54% 58.36% 100.00% 98.28% 73.17%
178 Mistral Large 2 85.45% 56.35% 100.00% 100.00% 81.50%
179 GPT-4o Mini (temp=1) 85.28% 55.83% 100.00% 100.00% 77.82%
180 Gemini 2.5 Flash 85.27% 56.72% 100.00% 99.08% 80.61%
181 Cydonia 24B V4.1 85.22% 66.97% 91.07% 97.62% 72.68%
182 Mistral Large 3 85.18% 55.54% 100.00% 100.00% 84.29%
183 GPT-4o, Aug. 6th (temp=0) 83.33% 50.00% 100.00% 100.00% 82.18%
184 Ministral 3 14B 83.19% 49.57% 100.00% 100.00% 70.45%
185 DeepSeek-V2 Chat 82.48% 56.98% 90.48% 100.00% 84.09%
186 GPT-4o Mini (temp=0) 82.23% 46.70% 100.00% 100.00% 76.86%
187 GPT-5.4 Mini 81.85% 45.55% 100.00% 100.00% 80.45%
188 Mistral Small 4 81.83% 45.50% 100.00% 100.00% 75.23%
189 Gemma 3 27B 80.53% 41.59% 100.00% 100.00% 75.70%
190 Writer: Palmyra X5 80.49% 48.62% 92.86% 100.00% 78.11%
191 Grok 4.20 80.48% 41.45% 100.00% 99.99% 81.21%
192 Llama 3.1 70B 80.47% 61.33% 92.86% 87.24% 77.41%
193 WizardLM 2 8x22b 79.28% 57.02% 85.73% 95.09% 71.45%
194 Gemma 3 12B 77.13% 31.38% 100.00% 100.00% 76.07%
195 DeepSeek V3 (2025-03-24) 76.88% 47.98% 88.10% 94.58% 79.93%
196 Qwen 3 235B A22B Instruct 2507 76.34% 43.34% 85.71% 99.97% 78.07%
197 Gemma 3 4B 75.94% 27.83% 100.00% 100.00% 66.33%
198 Ministral 3 3B 75.10% 36.00% 89.29% 100.00% 65.02%
199 Ministral 3B 73.79% 35.66% 85.71% 100.00% 59.25%
200 Hermes 3 70B 70.71% 53.99% 60.79% 97.34% 69.74%
201 Mistral NeMO 69.32% 31.81% 76.19% 99.97% 63.80%
202 Cohere Command R+ (Aug. 2024) 66.30% 61.00% 37.90% 100.00% 67.04%