Compare · ModelsLive · 2 picked · head to head

Claude Opus 5.5 vs Gemini 4 Argon

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Winner summary

Claude Opus 5.5 wins on 24/28 benchmarks

Claude Opus 5.5 wins 24 of 28 shared benchmarks. Leads in speed · reasoning · knowledge.

Category leads

speed·Claude Opus 5.5agentic·Gemini 4 Argonreasoning·Claude Opus 5.5knowledge·Claude Opus 5.5general·Claude Opus 5.5coding·Claude Opus 5.5math·Claude Opus 5.5

Hype vs Reality

Attention vs performance

Claude Opus 5.5

#11 by perf·#6 by attention

DESERVED

Gemini 4 Argon

#17 by perf·#8 by attention

DESERVED

See full mindshare →

Best value

Gemini 4 Argon

1.9x better value than Claude Opus 5.5

Claude Opus 5.5

6.2 pts/$

$12.00/M

Gemini 4 Argon

12.0 pts/$

$6.00/M

Explore pricing →

Vendor risk

Who is behind the model

Anthropic

$965.0B·Tier 1

Medium risk

Google DeepMind

$3.61T·Tier 1

Low risk

See the AI economy →

Head to head

28 benchmarks · 2 models

Claude Opus 5.5Gemini 4 Argon

Artificial Analysis · CritPt

Claude Opus 5.5 leads by +4.6

Claude Opus 5.5

31.7

Gemini 4 Argon

27.1

Artificial Analysis · GDPval

Claude Opus 5.5 leads by +12.1

Claude Opus 5.5

68.3

Gemini 4 Argon

56.2

Artificial Analysis · Humanity's Last Exam

Claude Opus 5.5 leads by +4.3

Claude Opus 5.5

61.4

Gemini 4 Argon

57.1

Artificial Analysis · Long Context Reasoning

Claude Opus 5.5 leads by +5.0

Claude Opus 5.5

84.7

Gemini 4 Argon

79.7

Artificial Analysis · Quality Index

Claude Opus 5.5 leads by +5.1

Claude Opus 5.5

57.6

Gemini 4 Argon

52.6

Artificial Analysis · SciCode

Claude Opus 5.5 leads by +5.1

Claude Opus 5.5

66.9

Gemini 4 Argon

61.8

APEX-Agents

Gemini 4 Argon leads by +8.9

APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.

Claude Opus 5.5

73.5

Gemini 4 Argon

82.4

ARC-AGI

ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.

Claude Opus 5.5

98.5

Gemini 4 Argon

98.5

ARC-AGI-2

Claude Opus 5.5 leads by +2.1

ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.

Claude Opus 5.5

93.3

Gemini 4 Argon

91.3

Chess Puzzles

Claude Opus 5.5 leads by +8.4

Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.

Claude Opus 5.5

65.3

Gemini 4 Argon

56.9

Dtbench

Claude Opus 5.5 leads by +2.2

Claude Opus 5.5

98.2

Gemini 4 Argon

96.0

Ebr Bench

Claude Opus 5.5 leads by +6.7

Claude Opus 5.5

71.4

Gemini 4 Argon

64.8

Frontiercode

Claude Opus 5.5 leads by +7.1

Claude Opus 5.5

54.6

Gemini 4 Argon

47.5

FrontierMath-Tier-4-v2-Private

Claude Opus 5.5 leads by +17.0

Claude Opus 5.5

95.0

Gemini 4 Argon

78.0

FrontierMath-Tiers-1-3-v2-Private

Claude Opus 5.5 leads by +5.5

Claude Opus 5.5

96.0

Gemini 4 Argon

90.5

Frontierswe

Claude Opus 5.5 leads by +7.4

Claude Opus 5.5

62.3

Gemini 4 Argon

55.0

Furniture Assembly

Claude Opus 5.5 leads by +15.5

Claude Opus 5.5

76.2

Gemini 4 Argon

60.7

GPQA diamond

Gemini 4 Argon leads by +8.1

Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.

Claude Opus 5.5

91.1

Gemini 4 Argon

99.2

Lmca

Claude Opus 5.5 leads by +5.3

Claude Opus 5.5

80.3

Gemini 4 Argon

74.9

Mirrorcode

Claude Opus 5.5 leads by +36.7

Claude Opus 5.5

95.6

Gemini 4 Argon

58.9

Mystery Game Puzzles

Claude Opus 5.5 leads by +7.7

Claude Opus 5.5

68.0

Gemini 4 Argon

60.3

OTIS Mock AIME 2024-2025

OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.

Claude Opus 5.5

100.0

Gemini 4 Argon

100.0

PostTrainBench

Claude Opus 5.5 leads by +3.4

Claude Opus 5.5

43.8

Gemini 4 Argon

40.4

Proofbench

Claude Opus 5.5 leads by +1.0

Claude Opus 5.5

100.0

Gemini 4 Argon

99.0

Remote Labor Index

Claude Opus 5.5 leads by +4.2

Claude Opus 5.5

21.3

Gemini 4 Argon

17.1

SimpleBench

Gemini 4 Argon leads by +4.0

SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.

Claude Opus 5.5

86.1

Gemini 4 Argon

90.0

SimpleQA Verified

Gemini 4 Argon leads by +3.8

SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.

Claude Opus 5.5

72.2

Gemini 4 Argon

76.0

WeirdML v3

Claude Opus 5.5 leads by +9.4

Claude Opus 5.5

55.4

Gemini 4 Argon

46.0

Full benchmark table

Benchmark	Claude Opus 5.5	Gemini 4 Argon
Artificial Analysis · CritPt	31.7	27.1
Artificial Analysis · GDPval	68.3	56.2
Artificial Analysis · Humanity's Last Exam	61.4	57.1
Artificial Analysis · Long Context Reasoning	84.7	79.7
Artificial Analysis · Quality Index	57.6	52.6
Artificial Analysis · SciCode	66.9	61.8
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.	73.5	82.4
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.	98.5	98.5
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.	93.3	91.3
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.	65.3	56.9
Dtbench	98.2	96.0
Ebr Bench	71.4	64.8
Frontiercode	54.6	47.5
FrontierMath-Tier-4-v2-Private	95.0	78.0
FrontierMath-Tiers-1-3-v2-Private	96.0	90.5
Frontierswe	62.3	55.0
Furniture Assembly	76.2	60.7
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.	91.1	99.2
Lmca	80.3	74.9
Mirrorcode	95.6	58.9
Mystery Game Puzzles	68.0	60.3
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.	100.0	100.0
PostTrainBench	43.8	40.4
Proofbench	100.0	99.0
Remote Labor Index	21.3	17.1
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.	86.1	90.0
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.	72.2	76.0
WeirdML v3	55.4	46.0

Pricing · per 1M tokens · projected $/mo at 10M tokens

Model	Input	Output	Context	Projected $/mo
Claude Opus 5.5	$4.00	$20.00	1.0M tokens (~500 books)	$80.00
Gemini 4 Argon	$2.00	$10.00	1.0M tokens (~524 books)	$40.00

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