Noometry

Model comparison

Amazon Nova Micro vs Claude Opus 4.5

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 30.4 on the Noometry Index. Amazon Nova Micro costs 163× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

Last verified . 19 shared benchmarks.

Amazon Nova Micro Amazon

30.4

Rank #294 Confirmed

Claude Opus 4.5 Anthropic

50.5

Rank #47 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Amazon Nova Micro scores higher in 0 categories and Claude Opus 4.5 in 9 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Opus 4.5 leads 68.1 to 39.5.
  • The biggest single-benchmark swing is Berkeley Function Calling Leaderboard: 22.3% for Amazon Nova Micro and 77.5% for Claude Opus 4.5.
  • Amazon Nova Micro is cheaper at $0.035 / $0.14 per million input/output tokens, against $5 / $25 for Claude Opus 4.5.
  • Claude Opus 4.5 accepts more context: 200K tokens versus 128K.

Side by side

Amazon Nova MicroClaude Opus 4.5
ProviderAmazonAnthropic
Noometry Index30.450.5
Released2024-12-032025-11-01
WeightsProprietaryProprietary
Context window128K200K
Max output10K64K
Input $ / M tokens$0.035$5
Output $ / M tokens$0.14$25
Results tracked3269

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Category by category

Coding Claude Opus 4.5 leads

Amazon Nova Micro: 30.5 (#295), Claude Opus 4.5: 54.8 (#27)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Coding12181504
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 Coding20.2%—
ALE-Bench—1,025
AlgoTune—1.77

Agentic & Tool Use Claude Opus 4.5 leads

Amazon Nova Micro: 22.1 (#132), Claude Opus 4.5: 47.3 (#12)

BenchmarkAmazon Nova MicroClaude Opus 4.5
Berkeley Function Calling Leaderboard22.3%77.5%
Terminal-Bench—63.1%
GDPval—45.5%
Remote Labor Index—3.8%
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 Micro: 17.4 (#294), Claude Opus 4.5: 42.6 (#51)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Hard Prompts11911476
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 Reasoning25.1%—
Mystery Game Puzzles—22%
DTBench—89.9%
LiveBench Data Analysis34%—
LMCA—44.5%
Epoch Capabilities Index—150.09
ForecastBench—60.7
LiveBench29.6%—

Math Claude Opus 4.5 leads

Amazon Nova Micro: 26.9 (#254), Claude Opus 4.5: 38.6 (#132)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Math12061463
FrontierMath (Tiers 1-3)—34.4%
FrontierMath Tier 4—4.9%
OTIS Mock AIME 2024-2025—86.1%
ProofBench—36%
Omni-MATH21.4%—
LiveBench Math34.5%—
FrontierMath (Feb 2025 set)—20.7%
FrontierMath Tier 4 (v1)—4.2%

Knowledge Claude Opus 4.5 leads

Amazon Nova Micro: 29.6 (#237), Claude Opus 4.5: 56.5 (#44)

BenchmarkAmazon Nova MicroClaude Opus 4.5
Vectara Hallucination Rate5.5%10.9%
LMArena Expert11841487
GPQA Diamond—86%
Humanity's Last Exam—25.2%
SimpleQA Verified—45.7%
MMLU-Pro51.1%—
GPQA (HELM)38.3%—
MMLU70.8%—

Multimodal Not comparable

Amazon Nova Micro: —, Claude Opus 4.5: 31.4 (#107)

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

Multilingual Claude Opus 4.5 leads

Amazon Nova Micro: 36.5 (#239), Claude Opus 4.5: 54.3 (#47)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Non-English11861438
LMArena Chinese12091470
LMArena French12381471
LMArena German11921449
LMArena Japanese11541416
LMArena Korean11501424
LMArena Russian11851447
LMArena Spanish12251458

Instruction Following Claude Opus 4.5 leads

Amazon Nova Micro: 56.3 (#272), Claude Opus 4.5: 77.5 (#19)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Instruction Following11741478
LiveBench Instruction Following48%—
IFEval76%—

Long Context Claude Opus 4.5 leads

Amazon Nova Micro: 36.5 (#229), Claude Opus 4.5: 46.5 (#22)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Longer Query12051480
CL-bench—21.1%

Writing & Preference Claude Opus 4.5 leads

Amazon Nova Micro: 39.5 (#247), Claude Opus 4.5: 68.1 (#28)

BenchmarkAmazon Nova MicroClaude Opus 4.5
LMArena Text12081451
LMArena Creative Writing11721445
LMArena Multi-Turn11781466
EQ-Bench Creative Writing—1687
WildBench74.3%—
LiveBench Language15.8%—

Frequently asked questions

Is Amazon Nova Micro better than Claude Opus 4.5?

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 30.4 on the Noometry Index. Amazon Nova Micro costs 163× 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 Micro or Claude Opus 4.5?

Amazon Nova Micro is cheaper. It lists at $0.035 per million input tokens and $0.14 per million output tokens; Claude Opus 4.5 lists at $5 and $25.

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

Claude Opus 4.5 scores higher on coding benchmarks: 54.8 versus 30.5 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4.5 does, with 200K tokens against 128K.

How many benchmarks do Amazon Nova Micro and Claude Opus 4.5 share?

19 benchmarks have published results for both models. Amazon Nova Micro has 32 scored results on Noometry and Claude Opus 4.5 has 69.

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