Compare · ModelsLive · 2 picked · head to head

Claude Opus 5.5 vs Kimi K2.7 Code

Side by side · benchmarks, pricing, and signals you can act on.

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Winner summary

Claude Opus 5.5 wins on 13/13 benchmarks

Claude Opus 5.5 wins 13 of 13 shared benchmarks. Leads in speed · agentic · coding.

Category leads

speed·Claude Opus 5.5agentic·Claude Opus 5.5coding·Claude Opus 5.5math·Claude Opus 5.5knowledge·Claude Opus 5.5

Hype vs Reality

Attention vs performance

Claude Opus 5.5

#3 by perf·#6 by attention

DESERVED

Kimi K2.7 Code

#69 by perf·#17 by attention

UNDERRATED

See full mindshare →

Best value

Kimi K2.7 Code

4.5x better value than Claude Opus 5.5

Claude Opus 5.5

6.9 pts/$

$12.00/M

Kimi K2.7 Code

30.5 pts/$

$1.84/M

Explore pricing →

Vendor risk

Who is behind the model

Anthropic

$965.0B·Tier 1

Medium risk

Moonshot AI

$18.0B·Tier 1

Medium risk

See the AI economy →

Head to head

13 benchmarks · 2 models

Claude Opus 5.5Kimi K2.7 Code

Artificial Analysis · CritPt

Claude Opus 5.5 leads by +21.7

Claude Opus 5.5

31.7

Kimi K2.7 Code

10.0

Artificial Analysis · GDPval

Claude Opus 5.5 leads by +41.0

Claude Opus 5.5

67.3

Kimi K2.7 Code

26.3

Artificial Analysis · Humanity's Last Exam

Claude Opus 5.5 leads by +26.4

Claude Opus 5.5

61.4

Kimi K2.7 Code

35.0

Artificial Analysis · Long Context Reasoning

Claude Opus 5.5 leads by +5.4

Claude Opus 5.5

84.7

Kimi K2.7 Code

79.3

Artificial Analysis · Quality Index

Claude Opus 5.5 leads by +31.8

Claude Opus 5.5

57.6

Kimi K2.7 Code

25.8

Artificial Analysis · SciCode

Claude Opus 5.5 leads by +19.1

Claude Opus 5.5

66.9

Kimi K2.7 Code

47.8

APEX-Agents

Claude Opus 5.5 leads by +35.9

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

Kimi K2.7 Code

37.6

Frontiercode

Claude Opus 5.5 leads by +24.6

Claude Opus 5.5

54.6

Kimi K2.7 Code

30.1

FrontierMath-Tier-4-v2-Private

Claude Opus 5.5 leads by +82.8

Claude Opus 5.5

95.0

Kimi K2.7 Code

12.2

FrontierMath-Tiers-1-3-v2-Private

Claude Opus 5.5 leads by +37.2

Claude Opus 5.5

91.2

Kimi K2.7 Code

54.0

GPQA diamond

Claude Opus 5.5 leads by +3.6

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

87.5

Kimi K2.7 Code

83.8

OTIS Mock AIME 2024-2025

Claude Opus 5.5 leads by +4.5

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

Claude Opus 5.5

100.0

Kimi K2.7 Code

95.5

SimpleQA Verified

Claude Opus 5.5 leads by +35.7

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

Kimi K2.7 Code

36.5

Full benchmark table

Benchmark	Claude Opus 5.5	Kimi K2.7 Code
Artificial Analysis · CritPt	31.7	10.0
Artificial Analysis · GDPval	67.3	26.3
Artificial Analysis · Humanity's Last Exam	61.4	35.0
Artificial Analysis · Long Context Reasoning	84.7	79.3
Artificial Analysis · Quality Index	57.6	25.8
Artificial Analysis · SciCode	66.9	47.8
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	37.6
Frontiercode	54.6	30.1
FrontierMath-Tier-4-v2-Private	95.0	12.2
FrontierMath-Tiers-1-3-v2-Private	91.2	54.0
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.	87.5	83.8
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.	100.0	95.5
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.	72.2	36.5

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
Kimi K2.7 Code	$0.61	$3.07	262K tokens (~131 books)	$12.26

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