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Command A vs GPT-5.4 Nano

GPT-5.4 Nano leads Command A on the Artificial Analysis Intelligence Index, 20.7 to 13.1, and GPT-5.4 Nano costs 8.0x less per output token ($1.25 vs $10.00 per million). Updated October 21, 2026; 54 benchmarks have a result for both.

Replace Command A Replace GPT-5.4 Nano
Command ACohere
Coding
No data
Overall
No data
Output $/M
$10.00
4
GPT-5.4 NanoOpenAI
Coding
44.8
Overall
45.7
Output $/M
$1.25
50
vs boards won of 54 shared

Command A or GPT-5.4 Nano: which to pick

Only GPT-5.4 Nano has a coding score, 44.8 on the Vibe Coding Index; Command A has none, so the two cannot be ranked on coding.

Pick Command A for work measured by τ²-Bench Telecom or LegalBench (Vals AI), where it leads.

Model ACommand ACohereNot benchmarked1 independent benchmark$2.69 per solved taskModel BGPT-5.4 NanoOpenAI44.8/1002 independent benchmarks$0.14 per solved task
Shared results
54
Command A only
8
GPT-5.4 Nano only
31
Like-for-like categories
7 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Command A not benchmarked, GPT-5.4 Nano 44.8 from 2 benchmarks.
Widest category
Math, 36.4 points apart on average over 3 shared benchmarks.
Widest single gap
AIME: Command A 13.3% against GPT-5.4 Nano 88.8%, 75.4 points apart on a 0 to 100 scale.
Output price
Command A $10.00 against GPT-5.4 Nano $1.25 per million output tokens, 8.0x apart.
Context window
Command A takes 256K tokens, GPT-5.4 Nano 400K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryCommand ABarsGPT-5.4 NanoTies
Coding08
Intelligence01
Agentic work12
Reasoning07
Math03
Knowledge28
General121
All shared boards450
CodingLike-for-likeSix of these boards feed the Vibe Coding Index08
Coding benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
AA Coding Index27.856.1GPT-5.4 Nano
LiveCodeBench (Vals AI)35.1%84.0%GPT-5.4 Nano
SWE-bench Verified (Vals AI)7.8%69.8%GPT-5.4 Nano
Vibe Code Bench (Vals AI)Not measured26.1%Only GPT-5.4 Nano measured
Code migration (Vals AI)Not measured14.5%Only GPT-5.4 Nano measured
Terminal-Bench 2.1 (Vals AI)17.6%41.6%GPT-5.4 Nano
LiveCodeBench (Artificial Analysis run)28.7%Not measuredOnly Command A measured
SciCode38.5%47.2%GPT-5.4 Nano
Terminal-Bench Hard (Artificial Analysis run)25.0%42.4%GPT-5.4 Nano
WeirdMLNot measured49.2%Only GPT-5.4 Nano measured
ALE-BenchNot measured1004.5Only GPT-5.4 Nano measured
LMArena Text: coding13301404GPT-5.4 Nano
LMArena Text: software and IT13361402GPT-5.4 Nano
Neither model has a result on the other 26 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
AA Intelligence Index13.120.7GPT-5.4 Nano
Epoch Capabilities IndexNot measured146.0Only GPT-5.4 Nano measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index12
Agentic work benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
AA Agentic Index1.016.0GPT-5.4 Nano
Finance Agent (Vals AI)9.0%38.2%GPT-5.4 Nano
Tax Agent Bench (Vals AI)Not measured5.0%Only GPT-5.4 Nano measured
Legal Research Bench (Vals AI)Not measured6.3%Only GPT-5.4 Nano measured
Excel Modeling Benchmark (Vals AI)Not measured44.8%Only GPT-5.4 Nano measured
τ²-Bench Telecom80.7%76.0%Command A
Berkeley Function Calling Leaderboard (BFCL)46.5%Not measuredOnly Command A measured
Neither model has a result on the other 34 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index07
Reasoning benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
GPQA Diamond48.5%77.5%GPT-5.4 Nano
MMMU Pro (Vals AI)Not measured73.6%Only GPT-5.4 Nano measured
GPQA Diamond (Artificial Analysis run)76.1%81.7%GPT-5.4 Nano
Humanity's Last Exam (Artificial Analysis run)12.0%28.3%GPT-5.4 Nano
GPQA Diamond (Epoch AI run)Not measured78.5%Only GPT-5.4 Nano measured
ARC-AGINot measured51.5%Only GPT-5.4 Nano measured
ARC-AGI-2Not measured5.7%Only GPT-5.4 Nano measured
Chess puzzlesNot measured45.0%Only GPT-5.4 Nano measured
Mystery game puzzlesNot measured9.0%Only GPT-5.4 Nano measured
LMArena Text: hard prompts13261381GPT-5.4 Nano
LMArena Text: expert12961396GPT-5.4 Nano
LMArena Text: hard prompts in English13351387GPT-5.4 Nano
LMArena Vision: diagramsNot measured1210Only GPT-5.4 Nano measured
LMArena Vision: homeworkNot measured1225Only GPT-5.4 Nano measured
Kagi LLM Benchmark28.8%39.7%GPT-5.4 Nano
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
AIME13.3%88.8%GPT-5.4 Nano
MATH 500 (Vals AI)76.2%Not measuredOnly Command A measured
MGSM (Vals AI)85.7%Not measuredOnly Command A measured
AA Math Index13.0Not measuredOnly Command A measured
AIME 2025 (Artificial Analysis run)13.0%Not measuredOnly Command A measured
OTIS Mock AIMENot measured87.8%Only GPT-5.4 Nano measured
FrontierMath, tiers 1 to 3Not measured44.9%Only GPT-5.4 Nano measured
FrontierMath, tier 4Not measured12.2%Only GPT-5.4 Nano measured
ProofBenchNot measured5.0%Only GPT-5.4 Nano measured
LMArena Text: math13001405GPT-5.4 Nano
LMArena Text: mathematical work13121409GPT-5.4 Nano
Neither model has a result on the other 2 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index28
Knowledge benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
MMLU Pro69.2%77.2%GPT-5.4 Nano
LegalBench (Vals AI)79.7%77.9%Command A
CaseLaw (Vals AI)64.5%51.9%Command A
CorpFin (Vals AI)46.0%61.2%GPT-5.4 Nano
TaxEval (Vals AI)61.4%67.4%GPT-5.4 Nano
MortgageTax (Vals AI)Not measured59.1%Only GPT-5.4 Nano measured
MedQA (Vals AI)80.5%Not measuredOnly Command A measured
MedCode (Vals AI)19.7%41.0%GPT-5.4 Nano
MMLU Pro (Artificial Analysis run)71.2%Not measuredOnly Command A measured
SimpleQA VerifiedNot measured11.7%Only GPT-5.4 Nano measured
LMArena Text: science13391374GPT-5.4 Nano
LMArena Text: medicine and healthcare13341369GPT-5.4 Nano
LMArena Text: legal and government13481368GPT-5.4 Nano
LMArena Text: business and finance13151366GPT-5.4 Nano
Neither model has a result on the other 4 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
Neither model has a result on 9 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index121
General benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
SAGE (Vals AI)Not measured38.1%Only GPT-5.4 Nano measured
MedScribe (Vals AI)55.7%77.1%GPT-5.4 Nano
Vals Multimodal IndexNot measured47.6%Only GPT-5.4 Nano measured
IFBench73.9%75.9%GPT-5.4 Nano
Long context reasoning (AA-LCR)52.7%76.7%GPT-5.4 Nano
DTBench61.3%80.3%GPT-5.4 Nano
LMCA10.3%36.9%GPT-5.4 Nano
LMArena Text13311372GPT-5.4 Nano
LMArena Text: instruction following13091362GPT-5.4 Nano
LMArena Text: creative writing13191315Command A
LMArena VisionNot measured1196Only GPT-5.4 Nano measured
LMArena Text: English13441381GPT-5.4 Nano
LMArena Text: non-English13131359GPT-5.4 Nano
LMArena Text: Chinese13271391GPT-5.4 Nano
LMArena Text: German13421368GPT-5.4 Nano
LMArena Text: Japanese12851343GPT-5.4 Nano
LMArena Text: Korean12851321GPT-5.4 Nano
LMArena Text: French13511395GPT-5.4 Nano
LMArena Text: Spanish13471371GPT-5.4 Nano
LMArena Text: Russian13141363GPT-5.4 Nano
LMArena Text: Polish13241366GPT-5.4 Nano
LMArena Text: multi-turn13381382GPT-5.4 Nano
LMArena Text: longer queries13341365GPT-5.4 Nano
LMArena Text: writing and language13281338GPT-5.4 Nano
LMArena Text: entertainment and media13061325GPT-5.4 Nano
LMArena Vision: EnglishNot measured1202Only GPT-5.4 Nano measured
LMArena Vision: ChineseNot measured1232Only GPT-5.4 Nano measured
LMArena Vision: reading textNot measured1204Only GPT-5.4 Nano measured
LMArena Vision: humorNot measured1161Only GPT-5.4 Nano measured
LMArena Vision: recognizing thingsNot measured1141Only GPT-5.4 Nano measured
LMArena Vision: creative writingNot measured1159Only GPT-5.4 Nano measured
Neither model has a result on the other 15 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Command A and GPT-5.4 Nano
BenchmarkCommand AGPT-5.4 NanoLeader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Command A$0.0075Fits in one request
GPT-5.4 Nano$0.0008Fits in one request

GPT-5.4 Nano costs less

Repository review

50K input + 3K output tokens

Command A$0.155Fits in one request
GPT-5.4 Nano$0.014Fits in one request

GPT-5.4 Nano costs less

Agent loop

200K input + 10K output tokens

Command A$0.600Fits in one request
GPT-5.4 Nano$0.052Fits in one request

GPT-5.4 Nano costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Command A and GPT-5.4 Nano
SpecificationCohere Command AOpenAI GPT-5.4 Nano
MakerCohereOpenAI
WeightsOpen weightsNo public weights listed
ReleasedMarch 13, 2025March 17, 2026
Context window256K400K
Input $/Mtok$2.50$0.20
Output $/Mtok$10.00$1.25
Coding indexNot benchmarked44.8
Independent measurements behind it12
Cost per solved task$2.69$0.14
SourceOpenRouter listingOpenRouter listing

Questions

Is Command A better than GPT-5.4 Nano for coding?

Only GPT-5.4 Nano has a coding score, 44.8 on the Vibe Coding Index; Command A has none, so the two cannot be ranked on coding. Pick Command A for work measured by τ²-Bench Telecom or LegalBench (Vals AI), where it leads.

Which is cheaper, Command A or GPT-5.4 Nano?

Command A costs $2.50 per million input tokens and $10.00 per million output tokens; GPT-5.4 Nano costs $0.20 and $1.25. Per solved SWE-bench Verified task, Command A costs $2.69 and GPT-5.4 Nano $0.14.

Which has the bigger context window, Command A or GPT-5.4 Nano?

GPT-5.4 Nano, with 400K tokens against 256K.

How many benchmarks is the Command A vs GPT-5.4 Nano comparison based on?

54 benchmarks have a result for both models as of October 21, 2026. Command A's coding index rests on 1 independent benchmark and GPT-5.4 Nano's on 2. Where only one model has a result, the page says so instead of naming a winner.

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