Noometry

Model comparison

Claude 3 Sonnet vs GPT-4.5

GPT-4.5 is the stronger model overall, scoring 37.2 to 29.0 on the Noometry Index.

Last verified . 22 shared benchmarks.

Claude 3 Sonnet Anthropic

29.0

Rank #319 Confirmed

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Claude 3 Sonnet scores higher in 1 category and GPT-4.5 in 8 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-4.5 leads 32.6 to 10.7.
  • The biggest single-benchmark swing is MATH Level 5: 18.2% for Claude 3 Sonnet and 78.6% for GPT-4.5.

Side by side

Claude 3 SonnetGPT-4.5
ProviderAnthropicOpenAI
Noometry Index29.037.2
Released2024-02-292025-02-27
WeightsProprietaryProprietary
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked3042

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Category by category

Coding GPT-4.5 leads

Claude 3 Sonnet: 29.6 (#302), GPT-4.5: 42.2 (#109)

BenchmarkClaude 3 SonnetGPT-4.5
WeirdML10.2%39.4%
LMArena Coding12231396
Aider Polyglot—44.9%
BigCodeBench Instruct42.7%—
LiveBench Coding—75.2%
BigCodeBench Complete53.8%—
HumanEval+64%—
MBPP+69.3%—

Agentic & Tool Use Not comparable

Claude 3 Sonnet: —, GPT-4.5: 27.9 (#97)

BenchmarkClaude 3 SonnetGPT-4.5
Cybench—17.5%

Reasoning Claude 3 Sonnet leads

Claude 3 Sonnet: 20.5 (#237), GPT-4.5: 13.9 (#330)

BenchmarkClaude 3 SonnetGPT-4.5
LMArena Hard Prompts11971403
Epoch Capabilities Index120.7136.74
ARC-AGI-2—0.8%
SimpleBench—34.5%
ARC-AGI-1—10.3%
EnigmaEval—3.2%
LiveBench Reasoning—71.1%
DTBench53.6%—
LiveBench Data Analysis—64.3%
ForecastBench—61.7
LiveBench—69%
WinoGrande75.1%—

Math GPT-4.5 leads

Claude 3 Sonnet: 10.7 (#310), GPT-4.5: 32.6 (#211)

BenchmarkClaude 3 SonnetGPT-4.5
OTIS Mock AIME 2024-20252.5%37.8%
LMArena Math12131412
MATH Level 518.2%78.6%
LiveBench Math—69.3%

Knowledge GPT-4.5 leads

Claude 3 Sonnet: 21.1 (#276), GPT-4.5: 32.5 (#211)

BenchmarkClaude 3 SonnetGPT-4.5
GPQA Diamond40.6%68.7%
LMArena Expert11731394
Humanity's Last Exam—5.4%
Confabulations—13.6%
MMLU75.9%—

Multimodal GPT-4.5 leads

Claude 3 Sonnet: 25.2 (#125), GPT-4.5: 37.6 (#71)

BenchmarkClaude 3 SonnetGPT-4.5
LMArena Vision9841195
VPCT—45%

Multilingual GPT-4.5 leads

Claude 3 Sonnet: 37.8 (#234), GPT-4.5: 52.5 (#83)

BenchmarkClaude 3 SonnetGPT-4.5
LMArena Non-English12051413
LMArena Chinese11891421
LMArena French12291418
LMArena German12041457
LMArena Japanese11311416
LMArena Korean11281392
LMArena Russian12271419
LMArena Spanish1204—

Instruction Following GPT-4.5 leads

Claude 3 Sonnet: 62.8 (#235), GPT-4.5: 72.6 (#134)

BenchmarkClaude 3 SonnetGPT-4.5
LMArena Instruction Following11991404
LiveBench Instruction Following—72.3%

Long Context GPT-4.5 leads

Claude 3 Sonnet: 36.7 (#228), GPT-4.5: 40.4 (#155)

BenchmarkClaude 3 SonnetGPT-4.5
LMArena Longer Query12111406
Fiction.LiveBench—63.9%

Writing & Preference GPT-4.5 leads

Claude 3 Sonnet: 42.1 (#238), GPT-4.5: 56.9 (#134)

BenchmarkClaude 3 SonnetGPT-4.5
LMArena Text12181417
LMArena Creative Writing11861394
LMArena Multi-Turn12271444
Short-Story Creative Writing—75.6%
EQ-Bench Creative Writing—1258
LiveBench Language—61.5%

Frequently asked questions

Is Claude 3 Sonnet better than GPT-4.5?

GPT-4.5 is the stronger model overall, scoring 37.2 to 29.0 on the Noometry Index.

Is Claude 3 Sonnet or GPT-4.5 better for coding?

GPT-4.5 scores higher on coding benchmarks: 42.2 versus 29.6 in the Noometry coding category.

How many benchmarks do Claude 3 Sonnet and GPT-4.5 share?

22 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and GPT-4.5 has 42.

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