Noometry

Model comparison

Claude 3 Sonnet vs GPT-6 Luna

GPT-6 Luna is the stronger model overall, scoring 53.3 to 29.0 on the Noometry Index.

Last verified . 22 shared benchmarks.

Claude 3 Sonnet Anthropic

29.0

Rank #319 Confirmed

GPT-6 Luna OpenAI

53.3

Rank #36 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Claude 3 Sonnet scores higher in 0 categories and GPT-6 Luna in 9 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-6 Luna leads 76.1 to 10.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 3 Sonnet and 98.9% for GPT-6 Luna.

Side by side

Claude 3 SonnetGPT-6 Luna
ProviderAnthropicOpenAI
Noometry Index29.053.3
Released2024-02-292026-09-22
WeightsProprietaryProprietary
Context window—1.05M
Max output—128K
Input $ / M tokens—$0.10
Output $ / M tokens—$0.50
Results tracked3042

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Category by category

Coding GPT-6 Luna leads

Claude 3 Sonnet: 29.6 (#302), GPT-6 Luna: 55.5 (#25)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Coding12231439
DeepSWE—66.6%
FrontierCode—42.4%
LMArena WebDev—1581
SciCode—54.6%
WeirdML10.2%—
BigCodeBench Instruct42.7%—
BigCodeBench Complete53.8%—
ALE-Bench—1,577
HumanEval+64%—
MBPP+69.3%—

Agentic & Tool Use Not comparable

Claude 3 Sonnet: —, GPT-6 Luna: 33.3 (#54)

BenchmarkClaude 3 SonnetGPT-6 Luna
APEX-Agents—44.3%
GDP.pdf—23%

Reasoning GPT-6 Luna leads

Claude 3 Sonnet: 20.5 (#237), GPT-6 Luna: 48.2 (#41)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Hard Prompts11971411
DTBench53.6%90.1%
Epoch Capabilities Index120.7156.28
ARC-AGI-2—59.3%
NYT Connections (extended)—68.7%
ARC-AGI-1—86.7%
CritPt—19.4%
Chess Puzzles—31%
Mystery Game Puzzles—7%
LMCA—44.5%
WinoGrande75.1%—

Math GPT-6 Luna leads

Claude 3 Sonnet: 10.7 (#310), GPT-6 Luna: 76.1 (#15)

BenchmarkClaude 3 SonnetGPT-6 Luna
OTIS Mock AIME 2024-20252.5%98.9%
LMArena Math12131416
FrontierMath (Tiers 1-3)—78.9%
FrontierMath Tier 4—56.1%
ProofBench—64%
MATH Level 518.2%—

Knowledge GPT-6 Luna leads

Claude 3 Sonnet: 21.1 (#276), GPT-6 Luna: 57.0 (#41)

BenchmarkClaude 3 SonnetGPT-6 Luna
GPQA Diamond40.6%90.5%
LMArena Expert11731444
SimpleQA Verified—41.4%
MMLU75.9%—

Multimodal GPT-6 Luna leads

Claude 3 Sonnet: 25.2 (#125), GPT-6 Luna: 42.4 (#30)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Vision9841217
Blueprint-Bench 2—31.2%
Furniture Assembly—44.2%

Multilingual GPT-6 Luna leads

Claude 3 Sonnet: 37.8 (#234), GPT-6 Luna: 50.5 (#117)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Non-English12051386
LMArena Chinese11891433
LMArena French12291420
LMArena German12041369
LMArena Japanese11311369
LMArena Korean11281360
LMArena Russian12271394
LMArena Spanish12041393

Instruction Following GPT-6 Luna leads

Claude 3 Sonnet: 62.8 (#235), GPT-6 Luna: 74.3 (#99)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Instruction Following11991409

Long Context GPT-6 Luna leads

Claude 3 Sonnet: 36.7 (#228), GPT-6 Luna: 43.0 (#111)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Longer Query12111409

Writing & Preference GPT-6 Luna leads

Claude 3 Sonnet: 42.1 (#238), GPT-6 Luna: 58.3 (#119)

BenchmarkClaude 3 SonnetGPT-6 Luna
LMArena Text12181391
LMArena Creative Writing11861363
LMArena Multi-Turn12271396

Frequently asked questions

Is Claude 3 Sonnet better than GPT-6 Luna?

GPT-6 Luna is the stronger model overall, scoring 53.3 to 29.0 on the Noometry Index.

Is Claude 3 Sonnet or GPT-6 Luna better for coding?

GPT-6 Luna scores higher on coding benchmarks: 55.5 versus 29.6 in the Noometry coding category.

How many benchmarks do Claude 3 Sonnet and GPT-6 Luna share?

22 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and GPT-6 Luna has 42.

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