Noometry

Model comparison

Command A vs GPT-5.5 Pro

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 36.5 on the Noometry Index. Command A costs 15× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

Last verified . 2 shared benchmarks.

Command A Cohere

36.5

Rank #215 Confirmed

GPT-5.5 Pro OpenAI

64.3

Rank #8 Confirmed

Summary

  • They share 2 benchmarks with published results for both. Command A scores higher in 0 categories and GPT-5.5 Pro in 3 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-5.5 Pro leads 73.3 to 18.3.
  • The biggest single-benchmark swing is LMCA: 10.3% for Command A and 53.9% for GPT-5.5 Pro.
  • Command A is cheaper at $2.50 / $10 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
  • GPT-5.5 Pro accepts more context: 1.05M tokens versus 256K.
  • Command A has downloadable open weights; the other is API-only.

Side by side

Command AGPT-5.5 Pro
ProviderCohereOpenAI
Noometry Index36.564.3
Released2025-03-132026-04-23
WeightsOpenProprietary
Context window256K1.05M
Max output8K128K
Input $ / M tokens$2.50$30
Output $ / M tokens$10$180
Results tracked2414

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Category by category

Coding Not comparable

Command A: 27.2 (#322), GPT-5.5 Pro: —

BenchmarkCommand AGPT-5.5 Pro
Aider Polyglot12%—
LMArena Coding1330—

Agentic & Tool Use Not comparable

Command A: 35.9 (#40), GPT-5.5 Pro: —

BenchmarkCommand AGPT-5.5 Pro
Berkeley Function Calling Leaderboard57.1%—

Reasoning GPT-5.5 Pro leads

Command A: 18.3 (#283), GPT-5.5 Pro: 73.3 (#10)

BenchmarkCommand AGPT-5.5 Pro
DTBench61.3%96%
LMCA10.3%53.9%
ARC-AGI-2—84.6%
SimpleBench—76.9%
Kagi LLM Benchmark28.8%—
ARC-AGI-1—96.5%
CritPt—30.6%
Chess Puzzles—64%
LMArena Hard Prompts1326—
Epoch Capabilities Index—162.07

Math GPT-5.5 Pro leads

Command A: 36.2 (#171), GPT-5.5 Pro: 84.0 (#10)

BenchmarkCommand AGPT-5.5 Pro
FrontierMath (Tiers 1-3)—87.7%
FrontierMath Tier 4—78%
OTIS Mock AIME 2024-2025—100%
LMArena Math1300—
FrontierMath (Feb 2025 set)—52.4%
FrontierMath Tier 4 (v1)—39.6%

Knowledge GPT-5.5 Pro leads

Command A: 37.1 (#159), GPT-5.5 Pro: 64.1 (#19)

BenchmarkCommand AGPT-5.5 Pro
GPQA Diamond—93.9%
Vectara Hallucination Rate9.3%—
LMArena Expert1295—

Multilingual Not comparable

Command A: 45.3 (#170), GPT-5.5 Pro: —

BenchmarkCommand AGPT-5.5 Pro
LMArena Non-English1313—
LMArena Chinese1327—
LMArena French1351—
LMArena German1341—
LMArena Japanese1285—
LMArena Korean1285—
LMArena Russian1314—
LMArena Spanish1347—

Instruction Following Not comparable

Command A: 69.1 (#177), GPT-5.5 Pro: —

BenchmarkCommand AGPT-5.5 Pro
LMArena Instruction Following1309—

Long Context Not comparable

Command A: 40.6 (#151), GPT-5.5 Pro: —

BenchmarkCommand AGPT-5.5 Pro
LMArena Longer Query1334—

Writing & Preference Not comparable

Command A: 47.6 (#208), GPT-5.5 Pro: —

BenchmarkCommand AGPT-5.5 Pro
LMArena Text1331—
LMArena Creative Writing1319—
EQ-Bench Creative Writing1145—
LMArena Multi-Turn1339—

Frequently asked questions

Is Command A better than GPT-5.5 Pro?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 36.5 on the Noometry Index. Command A costs 15× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

Which is cheaper, Command A or GPT-5.5 Pro?

Command A is cheaper. It lists at $2.50 per million input tokens and $10 per million output tokens; GPT-5.5 Pro lists at $30 and $180.

Which has the bigger context window?

GPT-5.5 Pro does, with 1.05M tokens against 256K.

How many benchmarks do Command A and GPT-5.5 Pro share?

2 benchmarks have published results for both models. Command A has 24 scored results on Noometry and GPT-5.5 Pro has 14.

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