LogoLMSpeed
  • Home
  • Free
  • Models
  • Providers
  • Docs
LogoLMSpeed
  1. Home
  3. Compare
  5. Models
  7. Claude Opus 4.6 vs Kimi K2
LogoLMSpeed

The best API speed test tool

GitHubGitHubTwitterX (Twitter)Email
Product
  • Features
  • Pricing
  • FAQ
Leaderboard
  • Overview
  • Speed Ranking
  • Latency Ranking
  • Health Ranking
  • Model Pricing
  • Model Speed
  • Reasoning
  • Coding
Models
  • All Models
  • GPT
  • Claude
  • Gemini
  • DeepSeek
  • Llama
  • Qwen
Free Models
  • All Free Models
  • Free GPT
  • Free Claude
  • Free Gemini
  • Free DeepSeek
  • Free Llama
  • Free Qwen
Resources
  • Speed Test
  • Provider Directory
  • Documentation
Legal
  • Cookie Policy
  • Privacy Policy
  • Terms of Service
© 2026 LMSpeed All Rights Reserved.Made by Nexmoe with ❤️
Back to models

Data points: 128

On this page

Key TakeawaysComparison sheetBenchmark score comparisonAPI audit comparisonProvider examplesWhen to choose each modelFAQRelated compare reports

Key Takeaways

The readout for Claude Opus 4.6 and Kimi K2, before the detailed comparison sheet.

Decision read

Claude Opus 4.6

Claude Opus 4.6 currently has the stronger profile, with verified wins split 4 to 2.

Evidence depth

128 data points

Includes 31 benchmark rows, 0 audit samples, and 8 provider examples.

Selection signal

Start with Claude Opus 4.6

The charts below split 39 high-signal samples across speed, scores, and audit health.

Change comparison

Switch either side of this report to compare another model with the same LMSpeed data pipeline.

Select a different model to open a new comparison URL.

Model compare

Claude Opus 4.6 vs Kimi K2

claude-opus-4-6-vs-kimi-k2

Model A

Claude

Claude Opus 4.6

Model B

MoonshotAI

Kimi K2

Overall leaderLeadingContender
Verified metric wins4 wins2 wins
Where it leadsAverage speed, Free providers, Provider coverage, Recent tests

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Category performance

Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.

Model A coverage
7 / 8
Model B coverage
7 / 8
Shared
7 shared categories
Claude Opus 4.6Kimi K2
Category performanceCompare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.AgentsCodingReasoningKnowledgeMathMultilingualMultimodalInstruction following

Avg. score

Claude Opus 4.6

65.8

Avg. score

Kimi K2

57.2

Selected category

Coding

Claude Opus 4.6 leads by 28.6

Professional benchmark details

Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.

Aggregateverified

BenchLM overall score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

86.0

Rank #6/81 · confidence 4 · eval date 2026-02-01

+45.0

Kimi K2

41.0

Rank #53/81 · confidence 1 · eval date 2025-07-01

Performanceverified

Time to first answer token

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

1.77 s

Rank #31/83 · confidence 4

+0.26 s

Kimi K2

winner

1.51 s

Rank #27/83 · confidence 4

Performanceverified

Time to first token

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

1.77 s

Rank #48/83 · confidence 4

+0.26 s

Kimi K2

winner

1.51 s

Rank #41/83 · confidence 4

Performanceverified

Output speed

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

51.5 tok/s

Rank #66/83 · confidence 4

+27.7 tok/s

Kimi K2

23.8 tok/s

Rank #82/83 · confidence 4

Pricingverified

Output price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$25.00/M

Rank #84/96 · confidence 4

+$22.50/M

Kimi K2

winner

$2.50/M

Rank #45/96 · confidence 4

Pricingverified

Blended price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$10.00/M

Rank #84/96 · confidence 4

+$8.93/M

Kimi K2

winner

$1.07/M

Rank #46/96 · confidence 4

Pricingverified

Input price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$5.00/M

Rank #84/96 · confidence 4

+$4.40/M

Kimi K2

winner

$0.600/M

Rank #46/96 · confidence 4

Reasoningverified

MMLU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

winner

82.0%

Rank #31/74 · confidence 4 · eval date 2026-02-01

+0.1%

Kimi K2

81.9%

Rank #34/74 · confidence 4

Reasoningverified

GPQA

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

84.0%

Rank #33/104 · confidence 4

+7.3%

Kimi K2

76.7%

Rank #56/104 · confidence 4

Reasoningverified

AA-LCR

SourceClaude Opus 4.6

Claude Opus 4.6

winner

58.3

Rank #35/56 · confidence 4 · eval date 2026-02-01

+7.3

Kimi K2

51.0

Rank #39/56 · confidence 1 · eval date 2025-07-01

Reasoningverified

HLE

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

18.6%

Rank #41/104 · confidence 4

+12.3%

Kimi K2

6.3%

Rank #69/104 · confidence 4

Codingverified

Terminal-Bench Hard

SourceClaude Opus 4.6

Claude Opus 4.6

winner

48.5

Rank #8/58 · confidence 4 · eval date 2026-02-01

+32.6

Kimi K2

15.9

Rank #45/58 · confidence 1 · eval date 2025-07-01

Codingverified

AA Coding Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

47.6

Rank #9/60 · confidence 4 · eval date 2026-02-01

+25.5

Kimi K2

22.1

Rank #48/60 · confidence 1 · eval date 2025-07-01

Codingverified

BenchLM Coding score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

85.5

Rank #12/68 · confidence 4 · eval date 2026-02-01

+32.1

Kimi K2

53.4

Rank #41/68 · confidence 1 · eval date 2025-07-01

Codingverified

AA-SciCode

SourceClaude Opus 4.6

Claude Opus 4.6

winner

45.7

Rank #20/62 · confidence 4 · eval date 2026-02-01

+11.2

Kimi K2

34.5

Rank #50/62 · confidence 1 · eval date 2025-07-01

Codingverified

SciCode

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

45.7%

Rank #23/102 · confidence 4

+15.0%

Kimi K2

30.7%

Rank #81/102 · confidence 4

Mathverified

BenchLM Math score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

86.3

Rank #13/51 · confidence 4 · eval date 2026-02-01

+35.0

Kimi K2

51.3

Rank #38/51 · confidence 1 · eval date 2025-07-01

Knowledgeverified

AA-Omniscience Accuracy

SourceClaude Opus 4.6

Claude Opus 4.6

winner

45.2

Rank #8/57 · confidence 4 · eval date 2026-02-01

+18.4

Kimi K2

26.8

Rank #31/57 · confidence 1 · eval date 2025-07-01

Knowledgeverified

BenchLM Knowledge score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

90.1

Rank #8/66 · confidence 4 · eval date 2026-02-01

+34.1

Kimi K2

56.0

Rank #39/66 · confidence 1 · eval date 2025-07-01

Knowledgeverified

Artificial Analysis Intelligence Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

46.5

Rank #21/65 · confidence 4 · eval date 2026-02-01

+20.1

Kimi K2

26.3

Rank #48/65 · confidence 1 · eval date 2025-07-01

Knowledgeverified

AA-GPQA Diamond

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.0

Rank #28/62 · confidence 4 · eval date 2026-02-01

+7.4

Kimi K2

76.6

Rank #40/62 · confidence 1 · eval date 2025-07-01

Knowledgeverified

AA-Omniscience Hallucination Rate

SourceClaude Opus 4.6

Claude Opus 4.6

winner

76.0

Rank #29/57 · confidence 4 · eval date 2026-02-01

+1.8

Kimi K2

74.2

Rank #34/57 · confidence 1 · eval date 2025-07-01

Knowledgeverified

AA-HLE

SourceClaude Opus 4.6

Claude Opus 4.6

winner

18.6

Rank #31/62 · confidence 4 · eval date 2026-02-01

+11.6

Kimi K2

7.0

Rank #44/62 · confidence 1 · eval date 2025-07-01

Multimodalverified

Design Arena Website

SourceClaude Opus 4.6

Claude Opus 4.6

winner

1340.0

Rank #1/46 · confidence 4 · eval date 2026-02-01

+244.0

Kimi K2

1096.0

Rank #39/46 · confidence 1 · eval date 2025-07-01

Instruction followingverified

BenchLM Instruction Following score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

95.3

Rank #3/56 · confidence 4 · eval date 2026-02-01

+11.8

Kimi K2

83.5

Rank #19/56 · confidence 1 · eval date 2025-07-01

Instruction followingverified

AA-IFBench

SourceClaude Opus 4.6

Claude Opus 4.6

winner

44.6

Rank #37/59 · confidence 4 · eval date 2026-02-01

+3.1

Kimi K2

41.5

Rank #42/59 · confidence 1 · eval date 2025-07-01

Agentsverified

GDPval-AA

SourceClaude Opus 4.6

Claude Opus 4.6

winner

54.5

Rank #6/51 · confidence 4 · eval date 2026-02-01

+53.3

Kimi K2

1.2

Rank #51/51 · confidence 1 · eval date 2025-07-01

Agentsverified

GDPval-AA

SourceClaude Opus 4.6

Claude Opus 4.6

winner

1589.0

Rank #7/56 · confidence 4 · eval date 2026-02-01

+1064.0

Kimi K2

525.0

Rank #51/56 · confidence 1 · eval date 2025-07-01

Agentsverified

AA Agentic Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

64.2

Rank #9/56 · confidence 4 · eval date 2026-02-01

+40.0

Kimi K2

24.3

Rank #47/56 · confidence 1 · eval date 2025-07-01

Agentsverified

BenchLM Agentic score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

81.3

Rank #9/68 · confidence 4 · eval date 2026-02-01

+51.1

Kimi K2

30.2

Rank #57/68 · confidence 1 · eval date 2025-07-01

Agentsverified

Tau2-Telecom

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.8

Rank #21/57 · confidence 4 · eval date 2026-02-01

+23.7

Kimi K2

61.1

Rank #40/57 · confidence 1 · eval date 2025-07-01

API audit comparison

Latest completed audits from shared providers, with four safety and integrity score groups plus report links.

Provider
ClaudeClaude Opus 4.6
MoonshotAIKimi K2
No completed audits are available from shared providers yet.

Provider examples

Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.

Provider
ClaudeClaude Opus 4.6
MoonshotAIKimi K2
15 tests
Claude

Claude Opus 4.6

speed / latency

57 tok/s / 3926ms

input / output

No data

MoonshotAI

When to choose each model

This report only uses LMSpeed data for Claude Opus 4.6 and Kimi K2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Guidance
ClaudeClaude Opus 4.6
MoonshotAIKimi K2
When to choose each model

Claude Opus 4.6

Claude Opus 4.6 is stronger when you prioritize Average speed, Free providers, Provider coverage, Recent tests.

Kimi K2

Kimi K2 is stronger when you prioritize Cheapest input price, First-token latency.

FAQ

TL;DR: Claude Opus 4.6 leads across 128 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.

Why is this comparison indexable?
It has 6 verifiable comparison points, and both models have pricing or benchmark data.
Are missing metrics invented?
No. Metrics without LMSpeed data are omitted from this report.

Related compare reports

Continue from Claude Opus 4.6 vs Kimi K2 into nearby model comparisons with enough verified LMSpeed data.

Cheapest input price, First-token latency
Model metadataClaude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output.Kimi K2 exposes 262.1K tokens; notable signals: Text input, Text output, Tool calling, Structured outputs.
DeveloperAnthropicMoonshot AI
Context window1M tokens262.1K tokens
Max output128K tokens262.1K tokens
ReleasedApr 2026Sep 2025
Modalities

Input

TextImageFile

Output

Text

Input

Text

Output

Text
Features
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning
Text inputText outputTool callingStructured outputsJSON mode
ParametersNo dataNo data
TokenizerClaudeOther
Knowledge cutoffNo data2024-12-31
OpenRouter IDanthropic/claude-opus-4.6-fastmoonshotai/kimi-k2-0905
ReferencesNo dataNo data

Kimi K2

speed / latency

N/A / N/A

input / output

No data

GOU API10 tests
Claude

Claude Opus 4.6

speed / latency

51 tok/s / 9040ms

input / output

No data

MoonshotAI

Kimi K2

speed / latency

N/A / N/A

input / output

No data

QYES AI10 tests
Claude

Claude Opus 4.6

speed / latency

50 tok/s / 4968ms

input / output

No data

MoonshotAI

Kimi K2

speed / latency

40 tok/s / 2614ms

input / output

No data

6i2 API5 tests
Claude

Claude Opus 4.6

speed / latency

280 tok/s / 3242ms

input / output

No data

MoonshotAI

Kimi K2

speed / latency

N/A / N/A

input / output

No data

EasyMore5 tests
Claude

Claude Opus 4.6

speed / latency

27 tok/s / 15402ms

input / output

No data

MoonshotAI

Kimi K2

speed / latency

N/A / N/A

input / output

No data

紫脑喵
Claude

Claude Opus 4.6

claude-opus-4-6-thinking

speed / latency

No data

input / output

$5.00/M / $25.00/M

MoonshotAI

Kimi K2

kimi-k2-0905

speed / latency

No data

input / output

$0.010/M / $0.010/M

10dian-API
Claude

Claude Opus 4.6

claude-opus-4-6-thinking

speed / latency

No data

input / output

$0.060/M / $0.060/M

MoonshotAI

Kimi K2

kimi-k2-0905(次模型)

speed / latency

No data

input / output

$0.100/M / $0.100/M

CHB API
Claude

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0.068/M / $0.342/M

MoonshotAI

Kimi K2

kimi-k2-0905

speed / latency

No data

input / output

$1.03/M / $1.03/M

Rnglg2 API
ClaudeClaude Opus 4.6 vs GPT-5.46 verified data points
ClaudeClaude Opus 4.6 vs GPT-56 verified data points
ClaudeClaude Opus 4.6 vs Gemini 2.5 Pro6 verified data points
ClaudeClaude Opus 4.6 vs GPT-5.26 verified data points

Data as of Jun 19, 2026, 09:20 AM·Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.