Noometry

Model comparison

Amazon Nova Pro vs Claude Opus 4.5

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 31.0 on the Noometry Index. Amazon Nova Pro costs 7.1× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

Last verified . 21 shared benchmarks.

Amazon Nova Pro Amazon

31.0

Rank #281 Confirmed

Claude Opus 4.5 Anthropic

50.5

Rank #47 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Amazon Nova Pro scores higher in 0 categories and Claude Opus 4.5 in 10 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in agentic & tool use, where Claude Opus 4.5 leads 47.3 to 16.7.
  • The biggest single-benchmark swing is Berkeley Function Calling Leaderboard: 25% for Amazon Nova Pro and 77.5% for Claude Opus 4.5.
  • Amazon Nova Pro is cheaper at $0.80 / $3.20 per million input/output tokens, against $5 / $25 for Claude Opus 4.5.
  • Amazon Nova Pro accepts more context: 300K tokens versus 200K.

Side by side

Amazon Nova ProClaude Opus 4.5
ProviderAmazonAnthropic
Noometry Index31.050.5
Released2024-12-032025-11-01
WeightsProprietaryProprietary
Context window300K200K
Max output10K64K
Input $ / M tokens$0.80$5
Output $ / M tokens$3.20$25
Results tracked3869

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Category by category

Coding Claude Opus 4.5 leads

Amazon Nova Pro: 35.1 (#229), Claude Opus 4.5: 54.8 (#27)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Coding12701504
SWE-bench Verified—76.7%
SWE-bench Verified (bash only)—76.8%
LMArena WebDev—1494
SWE-bench Multilingual—70.7%
GSO—26.5%
WeirdML—63.7%
LiveBench Coding38.1%—
ALE-Bench—1,025
AlgoTune—1.77

Agentic & Tool Use Claude Opus 4.5 leads

Amazon Nova Pro: 16.7 (#147), Claude Opus 4.5: 47.3 (#12)

BenchmarkAmazon Nova ProClaude Opus 4.5
Berkeley Function Calling Leaderboard25%77.5%
Terminal-Bench—63.1%
GDPval—45.5%
Remote Labor Index—3.8%
TheAgentCompany1.7%—
τ²-bench Airline—84%
τ²-bench Banking—24.7%
τ²-bench Retail—79.6%
τ²-bench Telecom—92.3%
Cybench—82%
DeepResearch Bench—54.8%
OSWorld—66.3%
BALROG—43.5%
LMArena Search—1180
METR Time Horizons—75%
Vending-Bench 2—4,967

Reasoning Claude Opus 4.5 leads

Amazon Nova Pro: 20.0 (#243), Claude Opus 4.5: 42.6 (#51)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Hard Prompts12461476
Epoch Capabilities Index123.8150.09
ARC-AGI-2—37.6%
SimpleBench—62%
Kagi LLM Benchmark—80.2%
NYT Connections (extended)—52.5%
ARC-AGI-1—80%
Chess Puzzles—12%
EnigmaEval—11.9%
EBR-Bench—14.3%
LiveBench Reasoning32.6%—
Mystery Game Puzzles—22%
DTBench—89.9%
LiveBench Data Analysis48.3%—
LMCA—44.5%
ForecastBench—60.7
LiveBench43.5%—

Math Claude Opus 4.5 leads

Amazon Nova Pro: 28.5 (#243), Claude Opus 4.5: 38.6 (#132)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Math12521463
FrontierMath (Tiers 1-3)—34.4%
FrontierMath Tier 4—4.9%
OTIS Mock AIME 2024-2025—86.1%
ProofBench—36%
Omni-MATH24.2%—
LiveBench Math38%—
FrontierMath (Feb 2025 set)—20.7%
FrontierMath Tier 4 (v1)—4.2%

Knowledge Claude Opus 4.5 leads

Amazon Nova Pro: 27.4 (#250), Claude Opus 4.5: 56.5 (#44)

BenchmarkAmazon Nova ProClaude Opus 4.5
Humanity's Last Exam4.4%25.2%
Vectara Hallucination Rate5.1%10.9%
LMArena Expert12111487
GPQA Diamond—86%
SimpleQA Verified—45.7%
MMLU-Pro67.3%—
Confabulations30.1%—
GPQA (HELM)44.6%—
MMLU82%—

Multimodal Claude Opus 4.5 leads

Amazon Nova Pro: 25.0 (#126), Claude Opus 4.5: 31.4 (#107)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Vision980—
GeoBench—75%
VPCT—40%
Furniture Assembly—28.3%
LMArena Document—1462

Multilingual Claude Opus 4.5 leads

Amazon Nova Pro: 39.7 (#223), Claude Opus 4.5: 54.3 (#47)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Non-English12341438
LMArena Chinese12441470
LMArena French12711471
LMArena German12431449
LMArena Japanese12001416
LMArena Korean12031424
LMArena Russian12401447
LMArena Spanish11821458

Instruction Following Claude Opus 4.5 leads

Amazon Nova Pro: 64.9 (#226), Claude Opus 4.5: 77.5 (#19)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Instruction Following12351478
LiveBench Instruction Following67.1%—
IFEval81.5%—

Long Context Claude Opus 4.5 leads

Amazon Nova Pro: 38.1 (#205), Claude Opus 4.5: 46.5 (#22)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Longer Query12551480
CL-bench—21.1%

Writing & Preference Claude Opus 4.5 leads

Amazon Nova Pro: 43.9 (#226), Claude Opus 4.5: 68.1 (#28)

BenchmarkAmazon Nova ProClaude Opus 4.5
LMArena Text12591451
LMArena Creative Writing12121445
LMArena Multi-Turn12461466
Short-Story Creative Writing60.5%—
EQ-Bench Creative Writing—1687
WildBench77.7%—
LiveBench Language37%—

Frequently asked questions

Is Amazon Nova Pro better than Claude Opus 4.5?

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 31.0 on the Noometry Index. Amazon Nova Pro costs 7.1× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

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

Amazon Nova Pro is cheaper. It lists at $0.80 per million input tokens and $3.20 per million output tokens; Claude Opus 4.5 lists at $5 and $25.

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

Claude Opus 4.5 scores higher on coding benchmarks: 54.8 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 Opus 4.5 share?

21 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Claude Opus 4.5 has 69.

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