Benchmarks / Reasoning

SimpleBench

200+ multiple-choice questions on spatio-temporal reasoning, social intelligence and adversarial trick questions where unspecialized humans outperform frontier models; accuracy averaged over 5 runs.

96models
10%Open Index weight
–last updated
SimpleBenchpublisher

SimpleBench

Higher is better · best effort per model

Chart settings
96 of 96 selected

full table below

#ModelEffortScoreCost / taskHarness
1Opus 5.5max88.4%––
2Fable 5.1max86.6%––
3GPT-6 Astra Promax86.5%––
4GPT-6 Astramax83.6%––
5GPT-6.1 Solmax82.9%––
6Gemini 3.8 Flashmax82.4%––
7Fable 5max81.9%––
8Muse Spark 1.3max81.8%––
9Opus 5max80.6%––
10Gemini 3.1 Prohigh79.6%––
11GPT-5.5 Proxhigh76.9%––
12Gemini 3.5 Flashxhigh76.7%––
13Gemini 3 Prohigh76.4%––
14Grok 4.6max75.9%––
15Sonnet 5.5max75.9%––
16Muse Spark 1.2max74.5%––
17GPT-6 Solmax73.1%––
18GPT-5.6 Sol Proxhigh71.7%––
19Qwen 3.7 Maxmax70.4%––
20Grok 4.5max70.0%––
21GPT-5.5xhigh69.0%––
22Opus 4.6max67.6%––
23DeepSeek V4.1 Flashmax66.7%––
24GLM 5.3max66.2%––
25Opus 4.8max64.8%––
26GPT-5.6 Solxhigh64.8%––
27Qwen 3.6 Maxmax63.0%––
28Qwen 3.8 2.4T-A95B–62.5%––
29Gemini 2.5 Prohigh62.4%––
30Opus 4.5high62.0%––
31Opus 4.7max61.7%––
32GPT-5 Prohigh61.6%––
33Gemini 3 Flashhigh61.1%––
34DeepSeek V4 Flashmax61.1%––
35Kimi K3max60.7%––
36Sonnet 5max60.6%––
37Grok 4high60.5%––
38Qwen 3.8 27Bmax60.2%––
39Opus 4.1high60.0%––
40Opus 4medium58.8%––
41GLM 5.2max58.8%––
42Kimi K2.7 Codemax57.9%––
43GPT-5.2 Proxhigh57.4%––
44GPT-5high56.7%––
45Grok 4.1 Fasthigh56.0%––
46GLM 5.1max55.1%––
47Sonnet 4.5high54.3%––
48GPT-5.1high53.2%––
49GLM 5high53.2%––
50o3high53.1%––
51DeepSeek V3.2high52.6%––
52DeepSeek V4 Promax50.9%––
53Inklingmax50.0%––
54GPT-5.6 Terraxhigh48.9%––
55GLM 4.7none47.7%––
56Kimi K2.5max46.8%––
57GPT-5.6 Lunaxhigh46.8%––
58Sonnet 3.7medium46.4%––
59GPT-5.2high45.8%––
60MiniMax M3max45.8%––
61Sonnet 4high45.5%––
62o1high41.7%––
63Nemotron 3 Ultra 550B A55Bmax41.7%––
64Sonnet 10.22–41.4%––
65Gemini 2.5 Flashmedium41.2%––
66DeepSeek R1xhigh40.8%––
67DeepSeek V3.1none40.0%––
68Kimi K2medium39.6%––
69o4 minihigh38.7%––
70Grok 3none36.1%––
71Qwen 3.6 Flashmax35.2%––
72MiniMax M2.1–34.7%––
73GPT-4.5none34.5%––
74Gemini 1206–31.1%––
75Qwen 3 235B-A22Bxhigh31.0%––
76Gemini 2.0 Flashmedium30.7%––
77Llama 4 Maverickmedium27.7%––
78Sonnet 06.20–27.5%––
79DeepSeek V3none27.2%––
80Gemini 1.5 Pronone27.1%––
81GPT-4.1high27.0%––
82GPT-4high25.1%––
83MiniMax M2–25.0%––
84Opus 3none23.5%––
85Llama 3.1 405bnone23.0%––
86o3 minihigh22.8%––
87Grok 2none22.7%––
88Mistral Largenone22.5%––
89gpt-oss-120bhigh22.1%––
90Mistral Large 3none20.4%––
91Llama 3.3 70bnone19.9%––
92o1 minihigh18.1%––
93GPT-4ohigh17.8%––
94Command-R+ (Apr '24)none17.4%––
95GPT-4o minihigh10.7%––
96GPT-3.5high8.0%––