Best LLMs for Reasoning in 2026

Top AI models ranked by reasoning benchmark performance including SimpleQA and MuSR.

GPT-5.4
OpenAIProprietary1M

94

avg

Gemini 3.1 Pro
GoogleProprietary1M

94

avg

Claude Opus 4.6
AnthropicProprietary1M

94

avg

4
GPT-5.3 Codex
OpenAIProprietary400K

94

avg

5
Grok 4.1
xAIProprietary128K

94

avg

6
GPT-5.2
OpenAIProprietary400K

94

avg

7
GPT-5.2-Codex
OpenAIProprietary400K

94

avg

8
Gemini 3 Pro Deep Think
GoogleProprietary2M

94

avg

9
Claude Sonnet 4.6
AnthropicProprietary1M

94

avg

10
Claude Opus 4.5
AnthropicProprietary200K

94

avg

11
Gemini 3 Pro
GoogleProprietary2M

94

avg

12
GPT-5.1-Codex-Max
OpenAIProprietary400K

93

avg

13
GPT-5.1
OpenAIProprietary400K

92

avg

14
GLM-5 (Reasoning)
Zhipu AIOpen Weight200K

91

avg

15
Claude Sonnet 4.5
AnthropicProprietary1M

90

avg

16
Grok 4.1 Fast
xAIProprietary2M

89

avg

17
GPT-5 (high)
OpenAIProprietary128K

88

avg

18
o1-preview
OpenAIProprietary200K

87

avg

19
Kimi K2.5 (Reasoning)
Moonshot AIOpen Weight128K

87

avg

20
GPT-5 (medium)
OpenAIProprietary128K

86

avg

21
Qwen3.5 397B (Reasoning)
AlibabaOpen Weight128K

86

avg

22
o3-pro
OpenAIProprietary200K

85

avg

23
GPT-5 mini
OpenAIProprietary128K

83

avg

24
o3
OpenAIProprietary200K

83

avg

25
GLM-5
Zhipu AIOpen Weight200K

83

avg

26
Grok 4
xAIProprietary128K

82

avg

27
DeepSeek V3.2 (Thinking)
DeepSeekOpen Weight128K

82

avg

28
GLM-4.7
Zhipu AIOpen Weight200K

81

avg

29
Qwen2.5-1M
AlibabaOpen Weight1M

80

avg

30
Gemini 2.5 Pro
GoogleProprietary2M

80

avg

31
DeepSeek V3.2
DeepSeekOpen Weight128K

80

avg

32
Qwen2.5-72B
AlibabaOpen Weight128K

79

avg

33
o4-mini (high)
OpenAIProprietary200K

79

avg

34
Qwen3.5 397B
AlibabaOpen Weight128K

79

avg

35
DeepSeek Coder 2.0
DeepSeekOpen Weight128K

77

avg

36
DeepSeek LLM 2.0
DeepSeekOpen Weight128K

76

avg

37
DeepSeekMath V2
DeepSeekOpen Weight128K

76

avg

38
MiMo-V2-Flash
XiaomiOpen Weight128K

75

avg

39
Claude 4.1 Opus
AnthropicProprietary200K

73

avg

40
Kimi K2.5
Moonshot AIOpen Weight128K

73

avg

41
Mistral Large 3
MistralOpen Weight128K

72

avg

42
Claude 4 Sonnet
AnthropicProprietary200K

70

avg

43
Nemotron 3 Ultra 500B
NVIDIAOpen Weight32K

70

avg

44
MiniMax M2.5
MiniMaxProprietary128K

69

avg

45
Llama 3.1 405B
MetaOpen Weight128K

67

avg

46
Gemini 3 Flash
GoogleProprietary1M

66

avg

47
Mistral Large 2
MistralProprietary128K

65

avg

48
Claude Haiku 4.5
AnthropicProprietary200K

64

avg

49
GPT-4o
OpenAIProprietary128K

63

avg

50
Mistral 8x7B
MistralOpen Weight32K

62

avg

51
Claude 3.5 Sonnet
AnthropicProprietary200K

62

avg

52
GLM-4.7-Flash
Zhipu AIOpen Weight200K

62

avg

53
Gemini 1.5 Pro
GoogleProprietary2M

61

avg

54
Nemotron 3 Super 100B
NVIDIAOpen Weight32K

61

avg

55
Grok Code Fast 1
xAIProprietary256K

60

avg

56
Gemini 1.0 Pro
GoogleProprietary32K

59

avg

57
Gemini 3.1 Flash-Lite
GoogleProprietary1M

59

avg

58
Claude 3 Opus
AnthropicProprietary200K

58

avg

59
GPT-4 Turbo
OpenAIProprietary128K

57

avg

60
Llama 3 70B
MetaOpen Weight128K

55

avg

61
Claude 3 Haiku
AnthropicProprietary200K

53

avg

62
Nemotron 3 Nano 30B
NVIDIAOpen Weight32K

53

avg

63
Nemotron-4 15B
NVIDIAOpen Weight32K

51

avg

64
Moonshot v1
Moonshot AIProprietary128K

50

avg

65
Z-1
ZProprietary128K

49

avg

66
GPT-OSS 120B
OpenAIOpen Weight128K

48

avg

67
Gemini 2.5 Flash
GoogleProprietary1M

47

avg

68
Nemotron Ultra 253B
NVIDIAOpen Weight32K

46

avg

69
Llama 4 Behemoth
MetaOpen Weight32K

45

avg

70
Llama 4 Scout
MetaOpen Weight32K

44

avg

71
Llama 4 Maverick
MetaOpen Weight32K

43

avg

72
Gemma 3 27B
GoogleOpen Weight32K

42

avg

73
DeepSeek-R1
DeepSeekOpen Weight128K

41

avg

74
Qwen2.5-VL-32B
AlibabaOpen Weight32K

40

avg

75
Grok 3 [Beta]
xAIProprietary128K

39

avg

76
Nova Pro
Nova AIProprietary128K

38

avg

77
Qwen3 235B 2507 (Reasoning)
AlibabaOpen Weight128K

37

avg

78
Qwen3 235B 2507
AlibabaOpen Weight128K

36

avg

79
Claude 4.1 Opus Thinking
AnthropicProprietary200K

35

avg

80
GLM-4.5
TsinghuaProprietary128K

34

avg

81
MiniMax M1 80k
MiniMaxProprietary80K

33

avg

82
GLM-4.5-Air
TsinghuaProprietary128K

32

avg

83
DeepSeek V3.1 (Reasoning)
DeepSeekOpen Weight128K

31

avg

84
DeepSeek V3.1
DeepSeekOpen Weight128K

30

avg

85
Kimi K2
Moonshot AIProprietary128K

29

avg

86
GPT-OSS 20B
OpenAIOpen Weight128K

28

avg

87
Mistral 7B v0.3
MistralOpen Weight32K

27

avg

88
Mistral 8x7B v0.2
MistralOpen Weight32K

26

avg

Key Takeaways

  • The top model is GPT-5.4 by OpenAI with a score of 94.
  • The best open-weight model in this ranking is GLM-5 (Reasoning) at position #14.
  • 88 models are included in this ranking.