Noometry

Model comparison

Amazon Nova Pro vs Claude Sonnet 4.5

Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 31.0 on the Noometry Index. Amazon Nova Pro costs 4.3× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Last verified . 26 shared benchmarks.

Amazon Nova Pro Amazon

31.0

Rank #281 Confirmed

Claude Sonnet 4.5 Anthropic

44.1

Rank #81 Confirmed

Summary

  • They share 26 benchmarks with published results for both. Amazon Nova Pro scores higher in 0 categories and Claude Sonnet 4.5 in 10 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Sonnet 4.5 leads 66.5 to 43.9.
  • The biggest single-benchmark swing is Berkeley Function Calling Leaderboard: 25% for Amazon Nova Pro and 73.2% for Claude Sonnet 4.5.
  • Amazon Nova Pro is cheaper at $0.80 / $3.20 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
  • Amazon Nova Pro accepts more context: 300K tokens versus 200K.

Side by side

Amazon Nova ProClaude Sonnet 4.5
ProviderAmazonAnthropic
Noometry Index31.044.1
Released2024-12-032025-09-29
WeightsProprietaryProprietary
Context window300K200K
Max output10K64K
Input $ / M tokens$0.80$3
Output $ / M tokens$3.20$15
Results tracked3873

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Category by category

Coding Claude Sonnet 4.5 leads

Amazon Nova Pro: 35.1 (#229), Claude Sonnet 4.5: 47.3 (#61)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
LMArena Coding12701489
SWE-bench Verified—71.3%
SWE-bench Verified (bash only)—71.4%
LMArena WebDev—1393
SWE-bench Multilingual—67%
SciCode—44.7%
GSO—14.7%
WeirdML—47.7%
LiveBench Coding38.1%—
ALE-Bench—796.15
AlgoTune—1.52

Agentic & Tool Use Claude Sonnet 4.5 leads

Amazon Nova Pro: 16.7 (#147), Claude Sonnet 4.5: 38.3 (#32)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
Berkeley Function Calling Leaderboard25%73.2%
Terminal-Bench—46.5%
GDPval—42.5%
Remote Labor Index—2.1%
TheAgentCompany1.7%—
τ²-bench Airline—72%
τ²-bench Banking—25.3%
τ²-bench Retail—72.4%
τ²-bench Telecom—84.9%
Cybench—60%
DeepResearch Bench—52.6%
OSWorld—62.9%
LMArena Search—1159
METR Time Horizons—67.4%
Vending-Bench 2—3,839

Reasoning Claude Sonnet 4.5 leads

Amazon Nova Pro: 20.0 (#243), Claude Sonnet 4.5: 26.9 (#125)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
LMArena Hard Prompts12461462
Epoch Capabilities Index123.8146.84
ARC-AGI-2—13.6%
SimpleBench—54.3%
Kagi LLM Benchmark—57.9%
NYT Connections (extended)—37.3%
ARC-AGI-1—63.7%
CritPt—1.1%
Chess Puzzles—12%
EnigmaEval—6%
EBR-Bench—2.4%
LiveBench Reasoning32.6%—
Mystery Game Puzzles—17%
DTBench—83.2%
LiveBench Data Analysis48.3%—
LMCA—38.8%
ForecastBench—61.9
LiveBench43.5%—

Math Claude Sonnet 4.5 leads

Amazon Nova Pro: 28.5 (#243), Claude Sonnet 4.5: 32.3 (#216)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
Omni-MATH24.2%55.3%
LMArena Math12521449
FrontierMath (Tiers 1-3)—23.9%
FrontierMath Tier 4—2.4%
OTIS Mock AIME 2024-2025—77.8%
ProofBench—19%
LiveBench Math38%—
MATH Level 5—97.7%
FrontierMath (Feb 2025 set)—15.2%
FrontierMath Tier 4 (v1)—4.2%

Knowledge Claude Sonnet 4.5 leads

Amazon Nova Pro: 27.4 (#250), Claude Sonnet 4.5: 48.4 (#76)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
Humanity's Last Exam4.4%13.7%
MMLU-Pro67.3%86.9%
Vectara Hallucination Rate5.1%12%
GPQA (HELM)44.6%68.6%
LMArena Expert12111482
GPQA Diamond—82.3%
SimpleQA Verified—30.7%
Confabulations30.1%—
MMLU82%—

Multimodal Claude Sonnet 4.5 leads

Amazon Nova Pro: 25.0 (#126), Claude Sonnet 4.5: 34.8 (#89)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
LMArena Vision980—
VPCT—39.8%
LMArena Document—1450

Multilingual Claude Sonnet 4.5 leads

Amazon Nova Pro: 39.7 (#223), Claude Sonnet 4.5: 53.4 (#69)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
LMArena Non-English12341425
LMArena Chinese12441459
LMArena French12711458
LMArena German12431427
LMArena Japanese12001390
LMArena Korean12031403
LMArena Russian12401437
LMArena Spanish11821457

Instruction Following Claude Sonnet 4.5 leads

Amazon Nova Pro: 64.9 (#226), Claude Sonnet 4.5: 75.0 (#78)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
IFEval81.5%85%
LMArena Instruction Following12351459
LiveBench Instruction Following67.1%—

Long Context Claude Sonnet 4.5 leads

Amazon Nova Pro: 38.1 (#205), Claude Sonnet 4.5: 45.2 (#46)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
LMArena Longer Query12551476

Writing & Preference Claude Sonnet 4.5 leads

Amazon Nova Pro: 43.9 (#226), Claude Sonnet 4.5: 66.5 (#34)

BenchmarkAmazon Nova ProClaude Sonnet 4.5
LMArena Text12591439
LMArena Creative Writing12121442
WildBench77.7%85.4%
LMArena Multi-Turn12461465
Short-Story Creative Writing60.5%—
EQ-Bench Creative Writing—1678
LiveBench Language37%—

Frequently asked questions

Is Amazon Nova Pro better than Claude Sonnet 4.5?

Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 31.0 on the Noometry Index. Amazon Nova Pro costs 4.3× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Which is cheaper, Amazon Nova Pro or Claude Sonnet 4.5?

Amazon Nova Pro is cheaper. It lists at $0.80 per million input tokens and $3.20 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.

Is Amazon Nova Pro or Claude Sonnet 4.5 better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 35.1 in the Noometry coding category.

Which has the bigger context window?

Amazon Nova Pro does, with 300K tokens against 200K.

How many benchmarks do Amazon Nova Pro and Claude Sonnet 4.5 share?

26 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Claude Sonnet 4.5 has 73.

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