Best Proprietary LLMs in 2026

Top proprietary/closed-source AI models ranked by benchmark performance.

GPT-5.4
OpenAIProprietary1M

88

overall

Gemini 3.1 Pro
GoogleProprietary1M

87

overall

Claude Opus 4.6
AnthropicProprietary1M

86

overall

4
GPT-5.3 Codex
OpenAIProprietary400K

85

overall

5
Grok 4.1
xAIProprietary128K

84

overall

6
GPT-5.2
OpenAIProprietary400K

83

overall

7
GPT-5.2-Codex
OpenAIProprietary400K

82

overall

8
Gemini 3 Pro Deep Think
GoogleProprietary2M

81

overall

9
Claude Sonnet 4.6
AnthropicProprietary1M

80

overall

10
Claude Opus 4.5
AnthropicProprietary200K

79

overall

11
Gemini 3 Pro
GoogleProprietary2M

78

overall

12
GPT-5.1-Codex-Max
OpenAIProprietary400K

77

overall

13
GPT-5.1
OpenAIProprietary400K

76

overall

14
Claude Sonnet 4.5
AnthropicProprietary1M

74

overall

15
Grok 4.1 Fast
xAIProprietary2M

73

overall

16
GPT-5 (high)
OpenAIProprietary128K

72

overall

17
o1-preview
OpenAIProprietary200K

71

overall

18
GPT-5 (medium)
OpenAIProprietary128K

70

overall

19
Grok 4
xAIProprietary128K

69

overall

20
GPT-5 mini
OpenAIProprietary128K

68

overall

21
o3-pro
OpenAIProprietary200K

68

overall

22
o3
OpenAIProprietary200K

67

overall

23
o4-mini (high)
OpenAIProprietary200K

65

overall

24
Gemini 2.5 Pro
GoogleProprietary2M

65

overall

25
Claude 4.1 Opus
AnthropicProprietary200K

61

overall

26
Claude 4 Sonnet
AnthropicProprietary200K

59

overall

27
MiniMax M2.5
MiniMaxProprietary128K

59

overall

28
Gemini 3 Flash
GoogleProprietary1M

58

overall

29
Mistral Large 2
MistralProprietary128K

57

overall

30
Claude Haiku 4.5
AnthropicProprietary200K

57

overall

31
GPT-4o
OpenAIProprietary128K

56

overall

32
Claude 3.5 Sonnet
AnthropicProprietary200K

55

overall

33
Gemini 1.5 Pro
GoogleProprietary2M

54

overall

34
Grok Code Fast 1
xAIProprietary256K

54

overall

35
Gemini 3.1 Flash-Lite
GoogleProprietary1M

53

overall

36
Gemini 1.0 Pro
GoogleProprietary32K

52

overall

37
Claude 3 Opus
AnthropicProprietary200K

51

overall

38
GPT-4 Turbo
OpenAIProprietary128K

50

overall

39
Claude 3 Haiku
AnthropicProprietary200K

46

overall

40
Moonshot v1
Moonshot AIProprietary128K

44

overall

41
Z-1
ZProprietary128K

43

overall

42
Gemini 2.5 Flash
GoogleProprietary1M

41

overall

43
Grok 3 [Beta]
xAIProprietary128K

33

overall

44
Nova Pro
Nova AIProprietary128K

32

overall

45
Claude 4.1 Opus Thinking
AnthropicProprietary200K

29

overall

46
GLM-4.5
TsinghuaProprietary128K

28

overall

47
MiniMax M1 80k
MiniMaxProprietary80K

27

overall

48
GLM-4.5-Air
TsinghuaProprietary128K

26

overall

49
Kimi K2
Moonshot AIProprietary128K

23

overall

Key Takeaways

  • The top model is GPT-5.4 by OpenAI with a score of 88.
  • 49 models are included in this ranking.