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Model compare

Claude Sonnet 4.6 vs GPT-4o

The readout for Claude Sonnet 4.6 and GPT-4o, before the detailed comparison sheet.

Model A

Claude Sonnet 4.6

Anthropic

Leading
vs

Model B

GPT-4o

OpenAI

Contender

Key Takeaways

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

Decision read

Claude Sonnet 4.6

Claude Sonnet 4.6 has the higher weighted result; Model A / B score 92 to 8.

Evidence depth

103 data points

Includes 19 benchmark rows, 0 audit samples, and 10 provider examples.

Selection signal

Start with Claude Sonnet 4.6

The charts below split 29 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 Sonnet 4.6 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare
Claude Sonnet 4.6
GPT-4o
Overall leaderLeadingContender
Weighted overall score92.0 pts8.0 pts
Benchmark category leads6 categories0 categories
Operational advantagesCheapest input price, Free providers, Provider coverageAverage speed, First-token latency
Context window1M tokens128K tokens
Max output128K tokens16.4K 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 modeWeb search

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 Sonnet 4.6
GPT-4o
DeveloperAnthropicOpenAI
ReleasedFeb 2026Nov 2024
ParametersNo dataNo data
TokenizerClaudeGPT
Knowledge cutoffNo data2023-10-31
OpenRouter IDanthropic/claude-sonnet-4.6openai/gpt-4o
ReferencesNo dataNo data

When to choose each model

This report only uses LMSpeed data for Claude Sonnet 4.6 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Claude Sonnet 4.6

Claude Sonnet 4.6 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Cheapest input price, Free providers, Provider coverage).

GPT-4o

GPT-4o has these operational advantages: 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
7 / 8
Model B coverage
6 / 8
Shared
6 shared categories

Avg. score

Claude Sonnet 4.6

53.1

Avg. score

GPT-4o

43

Agents

Claude Sonnet 4.6 leads by 13.7

Claude Sonnet 4.652.7
GPT-4o39

Coding

Claude Sonnet 4.6 leads by 9.9

Claude Sonnet 4.655.9
GPT-4o46

Reasoning

Claude Sonnet 4.6 leads by 9.9

Claude Sonnet 4.649.8
GPT-4o39.9

Knowledge

Claude Sonnet 4.6 leads by 21.6

Claude Sonnet 4.670.6
GPT-4o49

Math

Claude Sonnet 4.6 leads by 11.0

Claude Sonnet 4.653.2
GPT-4o42.2

Multilingual

No data

Claude Sonnet 4.6-
GPT-4o-

Multimodal

Claude Sonnet 4.6

Claude Sonnet 4.645.7
GPT-4o-

Instruction following

Claude Sonnet 4.6 leads by 2.1

Claude Sonnet 4.643.7
GPT-4o41.6

Professional benchmark details

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

Aggregatereported

BenchLM overall score

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

59.0

Rank #39/100 · confidence 3 · eval date 2026-02-01

+16.0

GPT-4o

43.0

Rank #91/100 · confidence 1 · eval date 2024-05-13

Pricingverified

Output price

SourceClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Claude Sonnet 4.6

$15.00/M

Rank #155/180 · confidence 4

+$5.00/M

GPT-4o

winner

$10.00/M

Rank #138/180 · confidence 4

Pricingverified

Blended price

SourceClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Claude Sonnet 4.6

$6.00/M

Rank #155/180 · confidence 4

+$1.63/M

GPT-4o

winner

$4.38/M

Rank #145/180 · confidence 4

Pricingverified

Input price

SourceClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Claude Sonnet 4.6

$3.00/M

Rank #155/180 · confidence 4

+$0.500/M

GPT-4o

winner

$2.50/M

Rank #150/180 · confidence 4

Reasoningverified

HLE

SourceClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Claude Sonnet 4.6

winner

33.6%

Rank #44/209 · confidence 4

+31.2%

GPT-4o

2.4%

Rank #207/209 · confidence 4

Reasoningverified

GPQA

SourceClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Claude Sonnet 4.6

winner

87.5%

Rank #46/212 · confidence 4

+33.2%

GPT-4o

54.3%

Rank #178/212 · confidence 4

Reasoningreported

MMLU-Pro

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

79.2%

Rank #69/129 · confidence 3 · eval date 2026-02-01

+4.4%

GPT-4o

74.8%

Rank #90/129 · confidence 4

Codingverified

SciCode

SourceClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Claude Sonnet 4.6

winner

46.8%

Rank #39/205 · confidence 4

+13.5%

GPT-4o

33.3%

Rank #138/205 · confidence 4

Codingreported

AA-SciCode

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

46.9

Rank #42/108 · confidence 3 · eval date 2026-02-01

+13.6

GPT-4o

33.3

Rank #91/108 · confidence 1 · eval date 2024-05-13

Mathreported

FrontierMath v2 (Tiers 1-3)

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

32.4

Rank #18/47 · confidence 3 · eval date 2026-02-01

+32.1

GPT-4o

0.3

Rank #47/47 · confidence 1 · eval date 2024-05-13

Mathreported

BenchLM Math score

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

49.4

Rank #37/62 · confidence 3 · eval date 2026-02-01

+24.2

GPT-4o

25.2

Rank #60/62 · confidence 1 · eval date 2024-05-13

Knowledgereported

AA-Omniscience Accuracy

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

38.6

Rank #36/101 · confidence 3 · eval date 2026-02-01

+18.7

GPT-4o

19.9

Rank #86/101 · confidence 1 · eval date 2024-05-13

Knowledgereported

Artificial Analysis Intelligence Index

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

36.8

Rank #54/111 · confidence 3 · eval date 2026-02-01

+25.7

GPT-4o

11.1

Rank #101/111 · confidence 1 · eval date 2024-05-13

Knowledgereported

AA-Omniscience Hallucination Rate

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

68.5

Rank #56/101 · confidence 3 · eval date 2026-02-01

+30.6

GPT-4o

37.9

Rank #86/101 · confidence 1 · eval date 2024-05-13

Knowledgereported

AA-GPQA Diamond

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

79.9

Rank #74/108 · confidence 3 · eval date 2026-02-01

+25.6

GPT-4o

54.3

Rank #102/108 · confidence 1 · eval date 2024-05-13

Knowledgereported

AA-HLE

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

13.3

Rank #76/108 · confidence 3 · eval date 2026-02-01

+10.9

GPT-4o

2.4

Rank #108/108 · confidence 1 · eval date 2024-05-13

Multimodalreported

Design Arena Website

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

1305.0

Rank #12/75 · confidence 3 · eval date 2026-02-01

+463.0

GPT-4o

842.0

Rank #74/75 · confidence 1 · eval date 2024-05-13

Instruction followingreported

AA-IFBench

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

41.2

Rank #67/84 · confidence 3 · eval date 2026-02-01

+6.9

GPT-4o

34.3

Rank #80/84 · confidence 1 · eval date 2024-05-13

Agentsreported

τ²-bench results

SourceClaude Sonnet 4.6

Claude Sonnet 4.6

winner

79.5

Rank #55/82 · confidence 3 · eval date 2026-02-01

+54.4

GPT-4o

25.1

Rank #73/82 · confidence 1 · eval date 2024-05-13

API audit comparison

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

Provider
Claude Sonnet 4.6
GPT-4o
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 Sonnet 4.6
GPT-4o
速创API25 tests

Claude Sonnet 4.6

speed / latency

20 tok/s / 8427ms

input / output

No data

GPT-4o

speed / latency

88 tok/s / 1593ms

input / output

No data

CatClaw API10 tests

Claude Sonnet 4.6

speed / latency

N/A / N/A

input / output

No data

GPT-4o

speed / latency

57 tok/s / 3381ms

input / output

No data

ModelPool10 tests

Claude Sonnet 4.6

speed / latency

41 tok/s / 3714ms

input / output

No data

GPT-4o

speed / latency

N/A / N/A

input / output

No data

小水管 API10 tests

Claude Sonnet 4.6

speed / latency

31 tok/s / 4124ms

input / output

No data

GPT-4o

speed / latency

N/A / N/A

input / output

No data

EasyMore5 tests

Claude Sonnet 4.6

speed / latency

27 tok/s / 11925ms

input / output

No data

GPT-4o

speed / latency

N/A / N/A

input / output

No data

Dext API

Claude Sonnet 4.6

claude-sonnet-4-6

speed / latency

No data

input / output

$0.144/M/$0.719/M

GPT-4o

gpt-4o

speed / latency

No data

input / output

$0/M/$0/M

Moyanjdc API

Claude Sonnet 4.6

claude-sonnet-4-6

speed / latency

No data

input / output

$0/M/$0/M

GPT-4o

gpt-4o

speed / latency

No data

input / output

$75.00/M/$300.00/M

兔子API

Claude Sonnet 4.6

claude-sonnet-4-6

speed / latency

No data

input / output

$0/request

GPT-4o

gpt-4o-all

speed / latency

No data

input / output

$0/request

Crond

Claude Sonnet 4.6

claude-sonnet-4-6-免费

speed / latency

No data

input / output

$0.0030/request

GPT-4o

gpt-4o-2024-08-06

speed / latency

No data

input / output

$2.50/M/$10.00/M

Newagiai

Claude Sonnet 4.6

claude-sonnet-4-6

speed / latency

No data

input / output

$0.329/M/$1.64/M

GPT-4o

gpt-4o-all

speed / latency

No data

input / output

$0.0066/request

FAQ

Weighted outcome: Claude Sonnet 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.