Noometry

Model comparison

Claude Sonnet 4.5 vs Gemini 2.0 Flash (Feb 2025)

Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 34.8 on the Noometry Index.

Last verified . 36 shared benchmarks.

Claude Sonnet 4.5 Anthropic

44.0

Rank #76 Confirmed

Gemini 2.0 Flash (Feb 2025) Google

34.8

Rank #223 Confirmed

Summary

  • They share 36 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 8 categories and Gemini 2.0 Flash (Feb 2025) in 2 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in coding, where Claude Sonnet 4.5 leads 47.8 to 28.2.
  • The biggest single-benchmark swing is SWE-bench Verified (bash only): 71.4% for Claude Sonnet 4.5 and 13.5% for Gemini 2.0 Flash (Feb 2025).

Side by side

Claude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
ProviderAnthropicGoogle
Noometry Index44.034.8
Released2025-09-292024-12-06
WeightsProprietaryProprietary
Context window1M—
Max output64K—
Input $ / M tokens$3—
Output $ / M tokens$15—
Results tracked7354

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Category by category

Coding Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 47.8 (#54), Gemini 2.0 Flash (Feb 2025): 28.2 (#308)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
SWE-bench Verified (bash only)71.4%13.5%
WeirdML47.7%25.8%
LMArena Coding14891351
SWE-bench Verified71.3%—
Aider Polyglot—38.2%
LMArena WebDev1393—
SWE-bench Multilingual67%—
SciCode44.7%—
GSO14.7%—
BigCodeBench Instruct—45.9%
LiveBench Coding—63.4%
BigCodeBench Complete—59.9%
CadEval—30%
ALE-Bench796.15—
AlgoTune1.52—

Agentic & Tool Use Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 38.1 (#30), Gemini 2.0 Flash (Feb 2025): 28.0 (#85)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
Terminal-Bench46.5%—
Berkeley Function Calling Leaderboard73.2%—
GDPval42.5%—
Remote Labor Index2.1%—
TheAgentCompany—11.4%
τ²-bench Airline72%—
τ²-bench Banking25.3%—
τ²-bench Retail72.4%—
τ²-bench Telecom84.9%—
Cybench60%—
DeepResearch Bench52.6%—
OSWorld62.9%—
LMArena Search1159—
METR Time Horizons67.4%—
Vending-Bench 23,839—

Reasoning Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 26.9 (#113), Gemini 2.0 Flash (Feb 2025): 15.2 (#308)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
ARC-AGI-213.6%1.3%
SimpleBench54.3%31.1%
Kagi LLM Benchmark57.9%37.8%
EnigmaEval6%1.1%
LMArena Hard Prompts14621346
DTBench83.2%63.2%
Epoch Capabilities Index146.84135.36
NYT Connections (extended)37.3%—
ARC-AGI-163.7%—
CritPt1.1%—
Chess Puzzles12%—
EBR-Bench2.4%—
LiveBench Reasoning—78.2%
Mystery Game Puzzles17%—
LiveBench Data Analysis—69.4%
LMCA38.8%—
ForecastBench61.9—
LiveBench—66.9%

Math Gemini 2.0 Flash (Feb 2025) leads

Claude Sonnet 4.5: 31.9 (#190), Gemini 2.0 Flash (Feb 2025): 36.1 (#127)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
OTIS Mock AIME 2024-202577.8%57.8%
Omni-MATH55.3%45.9%
LMArena Math14481351
MATH Level 597.7%82.2%
FrontierMath (Feb 2025 set)15.2%1.7%
FrontierMath (Tiers 1-3)23.9%—
FrontierMath Tier 42.4%—
ProofBench19%—
LiveBench Math—75.8%
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 48.4 (#70), Gemini 2.0 Flash (Feb 2025): 32.0 (#207)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
GPQA Diamond82.3%64.1%
Humanity's Last Exam13.7%6.6%
MMLU-Pro86.9%73.7%
GPQA (HELM)68.6%55.6%
LMArena Expert14831340
SimpleQA Verified30.7%—
Confabulations—12.4%
Vectara Hallucination Rate12%—
MMLU—79.7%

Multimodal Gemini 2.0 Flash (Feb 2025) leads

Claude Sonnet 4.5: 34.1 (#84), Gemini 2.0 Flash (Feb 2025): 35.9 (#74)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
LMArena Vision—1158
GeoBench—77%
VPCT39.8%—
LMArena Document1450—

Multilingual Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 53.6 (#65), Gemini 2.0 Flash (Feb 2025): 47.6 (#144)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
LMArena Non-English14251342
LMArena Chinese14591373
LMArena French14591390
LMArena German14271354
LMArena Japanese13901293
LMArena Korean14031314
LMArena Russian14361351
LMArena Spanish14571363

Instruction Following Too close to call

Claude Sonnet 4.5: 75.2 (#74), Gemini 2.0 Flash (Feb 2025): 74.6 (#91)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
IFEval85%84.1%
LMArena Instruction Following14591336
LiveBench Instruction Following—85.8%

Long Context Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 45.2 (#45), Gemini 2.0 Flash (Feb 2025): 38.1 (#198)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
LMArena Longer Query14761345
Fiction.LiveBench—61.1%

Writing & Preference Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 66.7 (#33), Gemini 2.0 Flash (Feb 2025): 49.8 (#184)

BenchmarkClaude Sonnet 4.5Gemini 2.0 Flash (Feb 2025)
LMArena Text14391354
LMArena Creative Writing14421340
EQ-Bench Creative Writing16781128
WildBench85.4%80%
LMArena Multi-Turn14651350
Short-Story Creative Writing—73.8%
LiveBench Language—51.3%

Frequently asked questions

Is Claude Sonnet 4.5 better than Gemini 2.0 Flash (Feb 2025)?

Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 34.8 on the Noometry Index.

Is Claude Sonnet 4.5 or Gemini 2.0 Flash (Feb 2025) better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.8 versus 28.2 in the Noometry coding category.

How many benchmarks do Claude Sonnet 4.5 and Gemini 2.0 Flash (Feb 2025) share?

36 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Gemini 2.0 Flash (Feb 2025) has 54.

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