Noometry

Model comparison

C4ai Aya Expanse 32b vs Claude Opus 4.7

Claude Opus 4.7 is the stronger model overall, scoring 58.3 to 35.9 on the Noometry Index.

Last verified . 18 shared benchmarks.

C4ai Aya Expanse 32b Cohere

35.9

Rank #221 Confirmed

Claude Opus 4.7 Anthropic

58.3

Rank #19 Confirmed

Summary

  • They share 18 benchmarks with published results for both. C4ai Aya Expanse 32b scores higher in 0 categories and Claude Opus 4.7 in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Opus 4.7 leads 75.1 to 42.2.
  • Claude Opus 4.7 accepts more context: 1M tokens versus 128K.
  • C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.

Side by side

C4ai Aya Expanse 32bClaude Opus 4.7
ProviderCohereAnthropic
Noometry Index35.958.3
Released2024-10-242026-04-14
WeightsOpenProprietary
Context window128K1M
Max output4K128K
Input $ / M tokens—$5
Output $ / M tokens—$25
Results tracked1866

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Category by category

Coding Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 34.8 (#231), Claude Opus 4.7: 59.6 (#13)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Coding11971518
SWE-bench Verified—83.5%
FrontierCode—38.5%
LMArena WebDev—1558
SciCode—54.5%
GSO—44.1%
WeirdML—76.4%
MirrorCode—31.1%
ALE-Bench—1,323

Agentic & Tool Use Not comparable

C4ai Aya Expanse 32b: —, Claude Opus 4.7: 47.9 (#10)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
Terminal-Bench—80.2%
APEX-Agents—49.2%
OSWorld 2.0—18.2%
τ²-bench Banking—40.2%
PostTrainBench—28.6%
ExploitBench—26.5%
GBAEval—43.8%
GDP.pdf—21%
LMArena Search—1233
Vending-Bench 2—10,937

Reasoning Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 23.3 (#180), Claude Opus 4.7: 53.8 (#29)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Hard Prompts11931506
ARC-AGI-2—75.8%
SimpleBench—61.7%
Kagi LLM Benchmark—80.7%
NYT Connections (extended)—39%
ARC-AGI-1—93.5%
CritPt—12%
Chess Puzzles—30%
Thematic Generalization—72.8%
EBR-Bench—19%
Mystery Game Puzzles—28%
DTBench—94.7%
LMCA—52.2%
Epoch Capabilities Index—156.25
ForecastBench—60.3

Math Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 34.0 (#197), Claude Opus 4.7: 66.7 (#26)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Math12001499
FrontierMath (Tiers 1-3)—70.2%
FrontierMath Tier 4—31.7%
MathArena Final-Answer Competitions—73.6%
OTIS Mock AIME 2024-2025—97.8%
ProofBench—54%
FrontierMath (Feb 2025 set)—43.8%
FrontierMath Tier 4 (v1)—22.9%

Knowledge Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 33.2 (#206), Claude Opus 4.7: 62.6 (#23)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
Vectara Hallucination Rate10.9%12%
LMArena Expert11821521
GPQA Diamond—90.2%
Humanity's Last Exam—36.2%
SimpleQA Verified—51.7%

Multimodal Not comparable

C4ai Aya Expanse 32b: —, Claude Opus 4.7: 41.2 (#38)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Vision—1316
Blueprint-Bench 2—24.5%
Furniture Assembly—33.3%
LMArena Document—1495

Multilingual Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 38.4 (#230), Claude Opus 4.7: 57.3 (#10)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Non-English12131480
LMArena Chinese12111531
LMArena French12481503
LMArena German11991495
LMArena Japanese11631472
LMArena Korean11581464
LMArena Russian12271494
LMArena Spanish11931495

Instruction Following Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 62.6 (#237), Claude Opus 4.7: 78.4 (#10)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Instruction Following11961498

Long Context Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 37.2 (#220), Claude Opus 4.7: 46.2 (#25)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Longer Query12281505

Writing & Preference Claude Opus 4.7 leads

C4ai Aya Expanse 32b: 42.2 (#235), Claude Opus 4.7: 75.1 (#8)

BenchmarkC4ai Aya Expanse 32bClaude Opus 4.7
LMArena Text12241490
LMArena Creative Writing12001486
LMArena Multi-Turn11901505
EQ-Bench Creative Writing—1914
EQ-Bench 4—1311

Frequently asked questions

Is C4ai Aya Expanse 32b better than Claude Opus 4.7?

Claude Opus 4.7 is the stronger model overall, scoring 58.3 to 35.9 on the Noometry Index.

Is C4ai Aya Expanse 32b or Claude Opus 4.7 better for coding?

Claude Opus 4.7 scores higher on coding benchmarks: 59.6 versus 34.8 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4.7 does, with 1M tokens against 128K.

How many benchmarks do C4ai Aya Expanse 32b and Claude Opus 4.7 share?

18 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and Claude Opus 4.7 has 66.

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