Noometry

Model comparison

Command A vs Grok 4.1 Fast

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 35.9 on the Noometry Index.

Last verified . 21 shared benchmarks.

Command A Cohere

35.9

Rank #212 Confirmed

Grok 4.1 Fast xAI

40.9

Rank #131 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Command A scores higher in 2 categories and Grok 4.1 Fast in 7 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.1 Fast leads 42.3 to 17.7.
  • The biggest single-benchmark swing is DTBench: 61.3% for Command A and 87.7% for Grok 4.1 Fast.
  • Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $2.50 / $10 for Command A.
  • Command A accepts more context: 256K tokens versus 128K.
  • Command A has downloadable open weights; the other is API-only.

Side by side

Command AGrok 4.1 Fast
ProviderCoherexAI
Noometry Index35.940.9
Released2025-03-132025-06-27
WeightsOpenProprietary
Context window256K128K
Max output8K30K
Input $ / M tokens$2.50$0.20
Output $ / M tokens$10$0.50
Results tracked2432

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Category by category

Coding Grok 4.1 Fast leads

Command A: 26.8 (#317), Grok 4.1 Fast: 33.8 (#236)

BenchmarkCommand AGrok 4.1 Fast
LMArena Coding13311411
Aider Polyglot12%—
LMArena WebDev—1241
ALE-Bench—394.93

Agentic & Tool Use Too close to call

Command A: 35.7 (#36), Grok 4.1 Fast: 36.1 (#35)

BenchmarkCommand AGrok 4.1 Fast
Berkeley Function Calling Leaderboard57.1%69.6%
τ²-bench Banking—13.1%
LMArena Search—1171
Vending-Bench 2—1,107

Reasoning Grok 4.1 Fast leads

Command A: 17.7 (#276), Grok 4.1 Fast: 42.3 (#45)

BenchmarkCommand AGrok 4.1 Fast
LMArena Hard Prompts13261407
DTBench61.3%87.7%
SimpleBench—56%
Kagi LLM Benchmark28.8%—
NYT Connections (extended)—87.4%
LMCA10.3%—
ForecastBench—61

Math Command A leads

Command A: 33.5 (#172), Grok 4.1 Fast: 30.9 (#201)

BenchmarkCommand AGrok 4.1 Fast
LMArena Math13001408
MathArena Final-Answer Competitions—60.9%
ProofBench—4%

Knowledge Command A leads

Command A: 36.5 (#157), Grok 4.1 Fast: 32.6 (#203)

BenchmarkCommand AGrok 4.1 Fast
Vectara Hallucination Rate9.3%17.8%
LMArena Expert12951398

Multimodal Not comparable

Command A: —, Grok 4.1 Fast: 36.3 (#71)

BenchmarkCommand AGrok 4.1 Fast
LMArena Vision—1201

Multilingual Grok 4.1 Fast leads

Command A: 45.5 (#166), Grok 4.1 Fast: 51.1 (#110)

BenchmarkCommand AGrok 4.1 Fast
LMArena Non-English13131391
LMArena Chinese13271441
LMArena French13521416
LMArena German13411404
LMArena Japanese12831347
LMArena Korean12851361
LMArena Russian13141387
LMArena Spanish13461411

Instruction Following Grok 4.1 Fast leads

Command A: 69.3 (#172), Grok 4.1 Fast: 72.8 (#127)

BenchmarkCommand AGrok 4.1 Fast
LMArena Instruction Following13091376

Long Context Grok 4.1 Fast leads

Command A: 40.6 (#147), Grok 4.1 Fast: 42.4 (#121)

BenchmarkCommand AGrok 4.1 Fast
LMArena Longer Query13341390

Writing & Preference Grok 4.1 Fast leads

Command A: 47.8 (#204), Grok 4.1 Fast: 57.4 (#126)

BenchmarkCommand AGrok 4.1 Fast
LMArena Text13311408
LMArena Creative Writing13191394
EQ-Bench Creative Writing11451327
LMArena Multi-Turn13381389

Frequently asked questions

Is Command A better than Grok 4.1 Fast?

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 35.9 on the Noometry Index.

Which is cheaper, Command A or Grok 4.1 Fast?

Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; Command A lists at $2.50 and $10.

Is Command A or Grok 4.1 Fast better for coding?

Grok 4.1 Fast scores higher on coding benchmarks: 33.8 versus 26.8 in the Noometry coding category.

Which has the bigger context window?

Command A does, with 256K tokens against 128K.

How many benchmarks do Command A and Grok 4.1 Fast share?

21 benchmarks have published results for both models. Command A has 24 scored results on Noometry and Grok 4.1 Fast has 32.

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