Noometry

Model comparison

Claude Sonnet 5.5 vs Command A

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 36.5 on the Noometry Index.

Last verified . 12 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

Command A Cohere

36.5

Rank #215 Confirmed

Summary

  • They share 12 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 9 categories and Command A in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 36.2.
  • Claude Sonnet 5.5 is cheaper at $2 / $10 per million input/output tokens, against $2.50 / $10 for Command A.
  • Claude Sonnet 5.5 accepts more context: 1M tokens versus 256K.
  • Command A has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5Command A
ProviderAnthropicCohere
Noometry Index61.936.5
Released2026-09-282025-03-13
WeightsProprietaryOpen
Context window1M256K
Max output128K8K
Input $ / M tokens$2$2.50
Output $ / M tokens$10$10
Results tracked3224

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), Command A: 27.2 (#322)

BenchmarkClaude Sonnet 5.5Command A
LMArena Coding15131330
FrontierCode52.1%—
Aider Polyglot—12%
CursorBench55.5%—
LMArena WebDev1774—
FrontierSWE61.9%—
SciCode61%—
ALE-Bench1,819—

Agentic & Tool Use Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 45.0 (#16), Command A: 35.9 (#40)

BenchmarkClaude Sonnet 5.5Command A
APEX-Agents75.5%—
Berkeley Function Calling Leaderboard—57.1%

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 54.0 (#28), Command A: 18.3 (#283)

BenchmarkClaude Sonnet 5.5Command A
LMArena Hard Prompts14951326
Kagi LLM Benchmark—28.8%
NYT Connections (extended)80.5%—
CritPt31.4%—
Mystery Game Puzzles65%—
DTBench—61.3%
LMCA—10.3%
Epoch Capabilities Index165.03—

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 87.9 (#6), Command A: 36.2 (#171)

BenchmarkClaude Sonnet 5.5Command A
LMArena Math15101300
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#12), Command A: 37.1 (#159)

BenchmarkClaude Sonnet 5.5Command A
LMArena Expert15401295
GPQA Diamond95.6%—
SimpleQA Verified46.5%—
Vectara Hallucination Rate—9.3%

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), Command A: —

BenchmarkClaude Sonnet 5.5Command A
LMArena Vision1289—
Furniture Assembly75%—

Multilingual Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 55.3 (#30), Command A: 45.3 (#170)

BenchmarkClaude Sonnet 5.5Command A
LMArena Non-English14521313
LMArena Chinese15221327
LMArena Russian14511314
LMArena French—1351
LMArena German—1341
LMArena Japanese—1285
LMArena Korean—1285
LMArena Spanish—1347

Instruction Following Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 78.3 (#11), Command A: 69.1 (#177)

BenchmarkClaude Sonnet 5.5Command A
LMArena Instruction Following14951309

Long Context Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 45.9 (#28), Command A: 40.6 (#151)

BenchmarkClaude Sonnet 5.5Command A
LMArena Longer Query14981334

Writing & Preference Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#40), Command A: 47.6 (#208)

BenchmarkClaude Sonnet 5.5Command A
LMArena Text14711331
LMArena Creative Writing14651319
LMArena Multi-Turn14741339
EQ-Bench Creative Writing—1145

Frequently asked questions

Is Claude Sonnet 5.5 better than Command A?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 36.5 on the Noometry Index.

Which is cheaper, Claude Sonnet 5.5 or Command A?

Claude Sonnet 5.5 is cheaper. It lists at $2 per million input tokens and $10 per million output tokens; Command A lists at $2.50 and $10.

Is Claude Sonnet 5.5 or Command A better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 27.2 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 5.5 does, with 1M tokens against 256K.

How many benchmarks do Claude Sonnet 5.5 and Command A share?

12 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Command A has 24.

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