Model comparison

Claude 3.7 Sonnet vs gpt-oss-120b

Claude 3.7 Sonnet is the stronger model overall, scoring 39.4 to 36.0 on the Noometry Index.

Last verified . 33 shared benchmarks.

Claude 3.7 Sonnet Anthropic

39.4

Rank #154 Confirmed

gpt-oss-120b OpenAI

36.0

Rank #210 Confirmed

Summary

  • They share 33 benchmarks with published results for both. Claude 3.7 Sonnet scores higher in 5 categories and gpt-oss-120b in 4 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in agentic & tool use, where Claude 3.7 Sonnet leads 33.9 to 12.1.
  • The biggest single-benchmark swing is Fiction.LiveBench: 83.3% for Claude 3.7 Sonnet and 44.4% for gpt-oss-120b.
  • gpt-oss-120b has downloadable open weights; the other is API-only.

Side by side

Claude 3.7 Sonnet and gpt-oss-120b specifications
Claude 3.7 Sonnetgpt-oss-120b
ProviderAnthropicOpenAI
Noometry Index39.436.0
Released2025-02-242025-08-05
WeightsProprietaryOpen
Context window—131K
Max output—41K
Input $ / M tokens—$0.037
Output $ / M tokens—$0.17
Results tracked5848

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Category by category

Coding Claude 3.7 Sonnet leads

Claude 3.7 Sonnet: 41.1 (#120), gpt-oss-120b: 33.2 (#251)

Coding benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
SWE-bench Verified (bash only)52.8%26%
Aider Polyglot64.9%41.8%
LMArena Coding13611380
SWE-bench Verified61%—
SciCode—36%
GSO3.8%—
WeirdML—48.2%
LiveBench Coding74.5%—
CadEval54%—
ALE-Bench—575.62
AlgoTune—1.41

Agentic & Tool Use Claude 3.7 Sonnet leads

Claude 3.7 Sonnet: 33.9 (#46), gpt-oss-120b: 12.1 (#145)

Agentic & Tool Use benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
METR Time Horizons60%56.6%
Terminal-Bench—18.7%
APEX-Agents—4.4%
TheAgentCompany30.9%—
Cybench20%—
DeepResearch Bench43.6%—
OSWorld35.8%—
Vending-Bench 2—-21.53

Reasoning Too close to call

Claude 3.7 Sonnet: 18.7 (#252), gpt-oss-120b: 19.5 (#236)

Reasoning benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
SimpleBench46.4%22.1%
LMArena Hard Prompts13331364
Epoch Capabilities Index141.16139.94
ARC-AGI-20.9%—
Kagi LLM Benchmark—58.6%
ARC-AGI-128.6%—
CritPt—1.1%
Chess Puzzles—20%
EnigmaEval4.2%—
LiveBench Reasoning87.8%—
Mystery Game Puzzles—2%
DTBench—76.3%
LiveBench Data Analysis74%—
LMCA—22.1%
Surface Evolver Bench—25%
ForecastBench61.8—
LiveBench76.1%—

Math gpt-oss-120b leads

Claude 3.7 Sonnet: 35.7 (#137), gpt-oss-120b: 50.6 (#43)

Math benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
OTIS Mock AIME 2024-202557.8%88.9%
Omni-MATH33%68.8%
LMArena Math13361388
LiveBench Math79%—
MATH Level 591.2%—
FrontierMath (Feb 2025 set)4.1%—

Knowledge gpt-oss-120b leads

Claude 3.7 Sonnet: 39.7 (#117), gpt-oss-120b: 42.3 (#89)

Knowledge benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
GPQA Diamond79.7%75.8%
MMLU-Pro78.4%79.5%
Confabulations14.7%15.7%
GPQA (HELM)60.8%68.4%
LMArena Expert13211356
Humanity's Last Exam8%—
Vectara Hallucination Rate—14.2%

Multimodal Not comparable

Claude 3.7 Sonnet: 33.1 (#90), gpt-oss-120b: —

Multimodal benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
LMArena Vision1169—
GeoBench68%—
VPCT39%—
SpatialViz-Bench33.9%—

Multilingual gpt-oss-120b leads

Claude 3.7 Sonnet: 44.3 (#174), gpt-oss-120b: 48.2 (#142)

Multilingual benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
LMArena Non-English12961350
LMArena Chinese12991384
LMArena French13021370
LMArena German13011355
LMArena Japanese12681332
LMArena Korean12491283
LMArena Russian13111343
LMArena Spanish12991388

Instruction Following Claude 3.7 Sonnet leads

Claude 3.7 Sonnet: 73.1 (#120), gpt-oss-120b: 69.5 (#168)

Instruction Following benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
IFEval83.4%83.6%
LMArena Instruction Following13521318
LiveBench Instruction Following81.3%—

Long Context Claude 3.7 Sonnet leads

Claude 3.7 Sonnet: 50.2 (#10), gpt-oss-120b: 31.4 (#273)

Long Context benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
Fiction.LiveBench83.3%44.4%
LMArena Longer Query13731319

Writing & Preference Claude 3.7 Sonnet leads

Claude 3.7 Sonnet: 54.6 (#145), gpt-oss-120b: 46.7 (#213)

Writing & Preference benchmarks
BenchmarkClaude 3.7 Sonnetgpt-oss-120b
LMArena Text13141366
LMArena Creative Writing13321274
Short-Story Creative Writing81.1%77.1%
EQ-Bench Creative Writing1412961
WildBench81.4%84.5%
LMArena Multi-Turn13391340
LiveBench Language59.9%—

Frequently asked questions

Is Claude 3.7 Sonnet better than gpt-oss-120b?

Claude 3.7 Sonnet is the stronger model overall, scoring 39.4 to 36.0 on the Noometry Index.

Is Claude 3.7 Sonnet or gpt-oss-120b better for coding?

Claude 3.7 Sonnet scores higher on coding benchmarks: 41.1 versus 33.2 in the Noometry coding category.

How many benchmarks do Claude 3.7 Sonnet and gpt-oss-120b share?

33 benchmarks have published results for both models. Claude 3.7 Sonnet has 58 scored results on Noometry and gpt-oss-120b has 48.

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