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Model compare

Claude Opus 4.6 vs Claude Sonnet 4.6

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

Model A

Claude Opus 4.6

Anthropic

Leading
vs

Model B

Claude Sonnet 4.6

Anthropic

Contender

Key Takeaways

Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Decision read

Claude Opus 4.6

Claude Opus 4.6 has the higher weighted result; Model A / B score 76.6 to 23.4.

Evidence depth

144 data points

Includes 40 benchmark rows, 0 audit samples, and 10 provider examples.

Selection signal

Start with Claude Opus 4.6

The charts below split 50 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.

Comparison sheet

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

Model compare
Claude Opus 4.6
Claude Sonnet 4.6
Overall leaderLeadingContender
Weighted overall score76.6 pts23.4 pts
Benchmark category leads6 categories1 categories
Operational advantagesFree providers, Provider coverageCheapest input price, Average speed, First-token latency
Context window1M tokens1M tokens
Max output128K tokens128K tokens
Modalities

Input

TextImageFile

Output

Text

Input

TextImageFile

Output

Text
Features
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning

The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.

Model metadata

Model compare
Claude Opus 4.6
Claude Sonnet 4.6
DeveloperAnthropicAnthropic
ReleasedFeb 2026Feb 2026
ParametersNo dataNo data
TokenizerClaudeClaude
Knowledge cutoffNo dataNo data
OpenRouter IDanthropic/claude-opus-4.6anthropic/claude-sonnet-4.6
ReferencesNo dataNo data

When to choose each model

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

Claude Opus 4.6

Claude Opus 4.6 is stronger in benchmark categories (Agents, Coding, Reasoning, Math, Multimodal) and operational dimensions (Free providers, Provider coverage).

Claude Sonnet 4.6

Claude Sonnet 4.6 is stronger in benchmark categories (Knowledge) and operational dimensions (Cheapest input price, Average speed, First-token latency).

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
8 / 8
Model B coverage
7 / 8
Shared
7 shared categories

Avg. score

Claude Opus 4.6

51.8

Avg. score

Claude Sonnet 4.6

52.9

Agents

Claude Opus 4.6 leads by 2.4

Claude Opus 4.654.3
Claude Sonnet 4.651.9

Coding

Claude Opus 4.6 leads by 0.6

Claude Opus 4.656.6
Claude Sonnet 4.656

Reasoning

Claude Opus 4.6 leads by 3.3

Claude Opus 4.653.4
Claude Sonnet 4.650.1

Knowledge

Claude Sonnet 4.6 leads by 17.3

Claude Opus 4.653.3
Claude Sonnet 4.670.6

Math

Claude Opus 4.6 leads by 3.1

Claude Opus 4.655.7
Claude Sonnet 4.652.6

Multilingual

Claude Opus 4.6

Claude Opus 4.648.4
Claude Sonnet 4.6-

Multimodal

Claude Opus 4.6 leads by 2.4

Claude Opus 4.647.8
Claude Sonnet 4.645.4

Instruction following

Claude Opus 4.6 leads by 1.0

Claude Opus 4.644.8
Claude Sonnet 4.643.8

Professional benchmark details

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

Aggregatereported

BenchLM overall score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

62.0

Rank #41/111 · confidence 4 · eval date 2026-02-01

+3.0

Claude Sonnet 4.6

59.0

Rank #54/111 · confidence 4 · eval date 2026-02-01

Pricingverified

Blended price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$10.00/M

Rank #169/186 · confidence 4

+$4.00/M

Claude Sonnet 4.6

winner

$6.00/M

Rank #159/186 · confidence 4

Pricingverified

Input price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$5.00/M

Rank #168/186 · confidence 4

+$2.00/M

Claude Sonnet 4.6

winner

$3.00/M

Rank #159/186 · confidence 4

Pricingverified

Output price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$25.00/M

Rank #169/186 · confidence 4

+$10.00/M

Claude Sonnet 4.6

winner

$15.00/M

Rank #159/186 · confidence 4

Reasoningreported

BenchLM Reasoning score

SourceClaude Opus 4.6

Claude Opus 4.6

67.1

Rank #42/67 · confidence 4 · eval date 2026-02-01

+0.8

Claude Sonnet 4.6

winner

67.9

Rank #41/67 · confidence 4 · eval date 2026-02-01

Reasoningverified

HLE

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

19.1%

Rank #89/216 · confidence 4

+14.5%

Claude Sonnet 4.6

winner

33.6%

Rank #49/216 · confidence 4

Reasoningverified

GPQA

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

84.0%

Rank #75/218 · confidence 4

+3.5%

Claude Sonnet 4.6

winner

87.5%

Rank #50/218 · confidence 4

Reasoningreported

MMLU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

winner

82.0%

Rank #50/129 · confidence 4 · eval date 2026-02-01

+2.8%

Claude Sonnet 4.6

79.2%

Rank #69/129 · confidence 4 · eval date 2026-02-01

Reasoningreported

CritPt

SourceClaude Opus 4.6

Claude Opus 4.6

winner

2.8

Rank #57/88 · confidence 4 · eval date 2026-02-01

+1.9

Claude Sonnet 4.6

0.9

Rank #74/88 · confidence 4 · eval date 2026-02-01

Reasoningreported

AA-LCR

SourceClaude Opus 4.6

Claude Opus 4.6

67.0

Rank #71/106 · confidence 4 · eval date 2026-02-01

+1.3

Claude Sonnet 4.6

winner

68.3

Rank #70/106 · confidence 4 · eval date 2026-02-01

Codingreported

SWE-Rebench

SourceClaude Opus 4.6

Claude Opus 4.6

winner

65.3

Rank #1/11 · confidence 4 · eval date 2026-02-01

+4.6

Claude Sonnet 4.6

60.7

Rank #5/11 · confidence 4 · eval date 2026-02-01

Codingreported

React Native Evals

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.1

Rank #3/12 · confidence 4 · eval date 2026-02-01

+3.5

Claude Sonnet 4.6

80.6

Rank #5/12 · confidence 4 · eval date 2026-02-01

Codingreported

Vibe Code Bench

SourceClaude Opus 4.6

Claude Opus 4.6

winner

57.6

Rank #5/33 · confidence 4 · eval date 2026-02-01

+6.1

Claude Sonnet 4.6

51.5

Rank #7/33 · confidence 4 · eval date 2026-02-01

Codingreported

SWE-bench Verified

SourceClaude Opus 4.6

Claude Opus 4.6

winner

80.8

Rank #8/49 · confidence 4 · eval date 2026-02-01

+1.2

Claude Sonnet 4.6

79.6

Rank #15/49 · confidence 4 · eval date 2026-02-01

Codingreported

FrontierCode 1.1 Main

SourceClaude Opus 4.6

Claude Opus 4.6

winner

26.9

Rank #10/11 · confidence 4 · eval date 2026-02-01

+2.6

Claude Sonnet 4.6

24.3

Rank #11/11 · confidence 4 · eval date 2026-02-01

Codingreported

BenchLM Coding score

SourceClaude Opus 4.6

Claude Opus 4.6

50.3

Rank #54/87 · confidence 4 · eval date 2026-02-01

+11.5

Claude Sonnet 4.6

winner

61.8

Rank #23/87 · confidence 4 · eval date 2026-02-01

Codingreported

AA-SciCode

SourceClaude Opus 4.6

Claude Opus 4.6

45.7

Rank #54/113 · confidence 4 · eval date 2026-02-01

+1.2

Claude Sonnet 4.6

winner

46.9

Rank #49/113 · confidence 4 · eval date 2026-02-01

Mathreported

FrontierMath v2 (Tiers 1-3)

SourceClaude Opus 4.6

Claude Opus 4.6

winner

40.7

Rank #10/47 · confidence 4 · eval date 2026-02-01

+8.3

Claude Sonnet 4.6

32.4

Rank #18/47 · confidence 4 · eval date 2026-02-01

Mathreported

FrontierMath v2 (Tier 4)

SourceClaude Opus 4.6

Claude Opus 4.6

winner

22.9

Rank #11/36 · confidence 4 · eval date 2026-02-01

+14.6

Claude Sonnet 4.6

8.3

Rank #20/36 · confidence 4 · eval date 2026-02-01

Mathreported

BenchLM Math score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

58.6

Rank #29/63 · confidence 4 · eval date 2026-02-01

+9.6

Claude Sonnet 4.6

49.0

Rank #38/63 · confidence 4 · eval date 2026-02-01

Knowledgereported

SuperGPQA

SourceClaude Opus 4.6

Claude Opus 4.6

95.0

Rank #1/16 · confidence 4 · eval date 2026-02-01

0.0

Claude Sonnet 4.6

95.0

Rank #1/16 · confidence 4 · eval date 2026-02-01

Knowledgereported

BenchLM Knowledge score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

79.8

Rank #15/83 · confidence 4 · eval date 2026-02-01

+4.6

Claude Sonnet 4.6

75.2

Rank #27/83 · confidence 4 · eval date 2026-02-01

Knowledgereported

AA-Omniscience Accuracy

SourceClaude Opus 4.6

Claude Opus 4.6

winner

45.8

Rank #23/106 · confidence 4 · eval date 2026-02-01

+7.2

Claude Sonnet 4.6

38.6

Rank #40/106 · confidence 4 · eval date 2026-02-01

Knowledgereported

AA-Omniscience Hallucination Rate

SourceClaude Opus 4.6

Claude Opus 4.6

winner

80.1

Rank #43/106 · confidence 4 · eval date 2026-02-01

+11.6

Claude Sonnet 4.6

68.5

Rank #57/106 · confidence 4 · eval date 2026-02-01

Knowledgereported

Artificial Analysis Intelligence Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

26.4

Rank #57/117 · confidence 4 · eval date 2026-02-01

+1.7

Claude Sonnet 4.6

24.7

Rank #68/117 · confidence 4 · eval date 2026-02-01

Knowledgereported

AA-GPQA Diamond

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.0

Rank #67/113 · confidence 4 · eval date 2026-02-01

+4.1

Claude Sonnet 4.6

79.9

Rank #79/113 · confidence 4 · eval date 2026-02-01

Knowledgereported

AA-HLE

SourceClaude Opus 4.6

Claude Opus 4.6

winner

19.1

Rank #74/114 · confidence 4 · eval date 2026-02-01

+5.8

Claude Sonnet 4.6

13.3

Rank #82/114 · confidence 4 · eval date 2026-02-01

Multimodalreported

Design Arena Website

SourceClaude Opus 4.6

Claude Opus 4.6

winner

1306.0

Rank #14/78 · confidence 4 · eval date 2026-02-01

+7.0

Claude Sonnet 4.6

1299.0

Rank #15/78 · confidence 4 · eval date 2026-02-01

Multimodalreported

BenchLM Multimodal Grounded score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

59.5

Rank #40/56 · confidence 4 · eval date 2026-02-01

+5.4

Claude Sonnet 4.6

54.1

Rank #44/56 · confidence 4 · eval date 2026-02-01

Multimodalreported

AA-MMMU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

winner

72.5

Rank #45/68 · confidence 4 · eval date 2026-02-01

+1.9

Claude Sonnet 4.6

70.6

Rank #49/68 · confidence 4 · eval date 2026-02-01

Instruction followingreported

BenchLM Instruction Following score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

52.6

Rank #49/52 · confidence 4 · eval date 2026-02-01

+4.4

Claude Sonnet 4.6

48.2

Rank #50/52 · confidence 4 · eval date 2026-02-01

Instruction followingreported

AA-IFBench

SourceClaude Opus 4.6

Claude Opus 4.6

winner

44.6

Rank #59/84 · confidence 4 · eval date 2026-02-01

+3.4

Claude Sonnet 4.6

41.2

Rank #67/84 · confidence 4 · eval date 2026-02-01

Agentsreported

Claw-Eval

SourceClaude Opus 4.6

Claude Opus 4.6

winner

70.4

Rank #3/27 · confidence 4 · eval date 2026-02-01

+2.6

Claude Sonnet 4.6

67.8

Rank #5/27 · confidence 4 · eval date 2026-02-01

Agentsreported

Gert Labs

SourceClaude Opus 4.6

Claude Opus 4.6

61.9

Rank #10/49 · confidence 4 · eval date 2026-02-01

+1.1

Claude Sonnet 4.6

winner

62.9

Rank #8/49 · confidence 4 · eval date 2026-02-01

Agentsreported

JobBench

SourceClaude Opus 4.6

Claude Opus 4.6

36.7

Rank #9/24 · confidence 4 · eval date 2026-02-01

+0.2

Claude Sonnet 4.6

winner

36.9

Rank #8/24 · confidence 4 · eval date 2026-02-01

Agentsreported

CyberGym

SourceClaude Opus 4.6

Claude Opus 4.6

winner

66.6

Rank #11/15 · confidence 4 · eval date 2026-02-01

+1.4

Claude Sonnet 4.6

65.2

Rank #12/15 · confidence 4 · eval date 2026-02-01

Agentsreported

OSWorld-Verified

SourceClaude Opus 4.6

Claude Opus 4.6

winner

72.7

Rank #15/27 · confidence 4 · eval date 2026-02-01

+0.6

Claude Sonnet 4.6

72.1

Rank #16/27 · confidence 4 · eval date 2026-02-01

Agentsreported

Terminal-Bench 2.0

SourceClaude Opus 4.6

Claude Opus 4.6

winner

65.4

Rank #24/53 · confidence 4 · eval date 2026-02-01

+6.3

Claude Sonnet 4.6

59.1

Rank #35/53 · confidence 4 · eval date 2026-02-01

Agentsreported

BenchLM Agentic score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

63.5

Rank #36/76 · confidence 4 · eval date 2026-02-01

+13.0

Claude Sonnet 4.6

50.5

Rank #54/76 · confidence 4 · eval date 2026-02-01

Agentsreported

τ²-bench results

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.8

Rank #46/82 · confidence 4 · eval date 2026-02-01

+5.3

Claude Sonnet 4.6

79.5

Rank #55/82 · confidence 4 · eval date 2026-02-01

API audit comparison

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

Provider
Claude Opus 4.6
Claude Sonnet 4.6
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
Claude Opus 4.6
Claude Sonnet 4.6
UoCode30 tests

Claude Opus 4.6

speed / latency

38 tok/s / 2611ms

input / output

No data

Claude Sonnet 4.6

speed / latency

32 tok/s / 6074ms

input / output

No data

OptAI25 tests

Claude Opus 4.6

speed / latency

43 tok/s / 2542ms

input / output

No data

Claude Sonnet 4.6

speed / latency

N/A / N/A

input / output

No data

天宫造物25 tests

Claude Opus 4.6

speed / latency

N/A / N/A

input / output

No data

Claude Sonnet 4.6

speed / latency

40 tok/s / 3145ms

input / output

No data

巨量API22 tests

Claude Opus 4.6

speed / latency

24 tok/s / 7946ms

input / output

No data

Claude Sonnet 4.6

speed / latency

39 tok/s / 5723ms

input / output

No data

Kunkunout API20 tests

Claude Opus 4.6

speed / latency

40 tok/s / 16141ms

input / output

No data

Claude Sonnet 4.6

speed / latency

N/A / N/A

input / output

No data

兔子API

Claude Opus 4.6

claude-opus-4-6-high

speed / latency

No data

input / output

$0/request

Claude Sonnet 4.6

claude-sonnet-4-6

speed / latency

No data

input / output

$0/request

熊猫 API

Claude Opus 4.6

熊猫-特供-按量-满血逆-claude-opus-4-6

speed / latency

No data

input / output

$0.015/M/$0.076/M

Claude Sonnet 4.6

熊猫-特供-按量-满血逆-claude-sonnet-4.6

speed / latency

No data

input / output

$0.0078/M/$0.039/M

KFCV50

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0.017/request

Claude Sonnet 4.6

claude-sonnet-4-6

speed / latency

No data

input / output

$0.010/request

PoloAPI

Claude Opus 4.6

claude-opus-4-6-c

speed / latency

No data

input / output

$0.027/request

Claude Sonnet 4.6

claude-sonnet-4-6-c

speed / latency

No data

input / output

$0.027/request

Crond

Claude Opus 4.6

claude-opus-4-6[次]

speed / latency

No data

input / output

$0.030/request

Claude Sonnet 4.6

claude-sonnet-4-6[次]

speed / latency

No data

input / output

$0.030/request

FAQ

Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

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.

Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.