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Command A vs GPT-5.4

Updated October 21, 2026. 50 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Command A Replace GPT-5.4
Command ACohere
Coding
No data
Overall
13.1
Output $/M
$10.00
1
GPT-5.4OpenAI
Coding
64.4
Overall
39.0
Output $/M
$15.00
48
vs boards won of 50 shared, 1 tied

Decision reading

Only GPT-5.4 has a coding score, 64.4 on the Vibe Coding Index; Command A has none, so the two cannot be ranked on coding.

Command A has the edge where output tokens cost 1.5x less, and where the benchmark that matters is CaseLaw (Vals AI), where it leads.

Model ACommand ACohereNot benchmarked1 independent benchmark$2.69 per solved taskModel BGPT-5.4OpenAI64.4/1003 independent benchmarks$1.02 per solved task
Shared results
50
Command A only
10
GPT-5.4 only
59
Like-for-like categories
7 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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 64.4 from 3 benchmarks.
Widest category
Math, 48.5 points apart on average over 3 shared benchmarks.
Widest single gap
AIME: Command A 13.3% against GPT-5.4 96.7%, 83.3 points apart on a 0 to 100 scale.
Output price
Command A $10.00 against GPT-5.4 $15.00 per million output tokens, 1.5x apart.
Context window
Command A takes 256K tokens, GPT-5.4 1.05M.

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-5.4Ties
Coding06
Intelligence01
Agentic work01
Reasoning06
Math03
Knowledge110
General0211 tie
All shared boards1481 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index06
Coding benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
LMArena WebDevNot measured1464Only GPT-5.4 measured
AA Coding Index27.871.1GPT-5.4
LiveCodeBench (Vals AI)35.1%84.1%GPT-5.4
SWE-bench Verified (Vals AI)7.8%78.2%GPT-5.4
Vibe Code Bench (Vals AI)Not measured67.4%Only GPT-5.4 measured
Code migration (Vals AI)Not measured35.0%Only GPT-5.4 measured
ProgramBench (Vals AI)Not measured0.5%Only GPT-5.4 measured
Terminal-Bench 2.1 (Vals AI)17.6%Not measuredOnly Command A measured
SkillsBench (Vals AI)Not measured51.7%Only GPT-5.4 measured
LiveCodeBench (Artificial Analysis run)28.7%Not measuredOnly Command A measured
SciCode38.5%Not measuredOnly Command A measured
Terminal-Bench Hard (Artificial Analysis run)25.0%57.6%GPT-5.4
Terminal-BenchNot measured81.8%Only GPT-5.4 measured
GSO-BenchNot measured31.4%Only GPT-5.4 measured
WeirdMLNot measured77.7%Only GPT-5.4 measured
MirrorCodeNot measured15.6%Only GPT-5.4 measured
ALE-BenchNot measured1607.0Only GPT-5.4 measured
LMArena Text: coding13301496GPT-5.4
LMArena Text: software and IT13361491GPT-5.4
LMArena WebDev: ReactNot measured1454Only GPT-5.4 measured
LMArena WebDev: HTMLNot measured1478Only GPT-5.4 measured
LMArena WebDev: from an imageNot measured1436Only GPT-5.4 measured
Neither model has a result on the other 16 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
AA Intelligence Index13.139.0GPT-5.4
Epoch Capabilities IndexNot measured157.3Only GPT-5.4 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
AA Agentic Index1.0Not measuredOnly Command A measured
Design Arena: agents building web appsNot measured1059Only GPT-5.4 measured
Design Arena: agents building full-stack appsNot measured1017Only GPT-5.4 measured
Design Arena: agents building mobile appsNot measured1087Only GPT-5.4 measured
Design Arena: agents building Android appsNot measured1038Only GPT-5.4 measured
Design Arena: agents building Godot gamesNot measured1135Only GPT-5.4 measured
Finance Agent (Vals AI)9.0%Not measuredOnly Command A measured
τ²-Bench Telecom80.7%87.1%GPT-5.4
APEX-AgentsNot measured52.4%Only GPT-5.4 measured
METR time horizonsNot measured74.3%Only GPT-5.4 measured
DeepResearch BenchNot measured35.1%Only GPT-5.4 measured
PostTrainBenchNot measured19.0%Only GPT-5.4 measured
Vending-Bench 2Not measured$6,144Only GPT-5.4 measured
Neither model has a result on the other 26 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index06
Reasoning benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
GPQA Diamond48.5%91.7%GPT-5.4
MMMU Pro (Vals AI)Not measured87.5%Only GPT-5.4 measured
GPQA Diamond (Artificial Analysis run)76.1%92.0%GPT-5.4
Humanity's Last Exam (Artificial Analysis run)12.0%43.7%GPT-5.4
GPQA Diamond (Epoch AI run)Not measured93.3%Only GPT-5.4 measured
ARC-AGINot measured93.7%Only GPT-5.4 measured
ARC-AGI-2Not measured74.0%Only GPT-5.4 measured
Chess puzzlesNot measured48.0%Only GPT-5.4 measured
Mystery game puzzlesNot measured37.0%Only GPT-5.4 measured
EBR-benchNot measured25.4%Only GPT-5.4 measured
LMArena Text: hard prompts13261485GPT-5.4
LMArena Text: expert12961507GPT-5.4
LMArena Text: hard prompts in English13351479GPT-5.4
LMArena Vision: diagramsNot measured1327Only GPT-5.4 measured
LMArena Vision: homeworkNot measured1336Only GPT-5.4 measured
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
AIME13.3%96.7%GPT-5.4
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 measured97.8%Only GPT-5.4 measured
FrontierMath, tiers 1 to 3Not measured78.6%Only GPT-5.4 measured
FrontierMath, tier 4Not measured49.0%Only GPT-5.4 measured
ProofBenchNot measured56.0%Only GPT-5.4 measured
LMArena Text: math13001488GPT-5.4
LMArena Text: mathematical work13121497GPT-5.4
Neither model has a result on the other 2 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index110
Knowledge benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
MMLU Pro69.2%87.5%GPT-5.4
LegalBench (Vals AI)79.7%86.0%GPT-5.4
CaseLaw (Vals AI)64.5%63.8%Command A
CorpFin (Vals AI)46.0%65.3%GPT-5.4
TaxEval (Vals AI)61.4%74.0%GPT-5.4
MortgageTax (Vals AI)Not measured68.3%Only GPT-5.4 measured
MedQA (Vals AI)80.5%96.1%GPT-5.4
MedCode (Vals AI)19.7%41.3%GPT-5.4
MMLU Pro (Artificial Analysis run)71.2%Not measuredOnly Command A measured
SimpleQA VerifiedNot measured45.1%Only GPT-5.4 measured
LMArena Text: science13391479GPT-5.4
LMArena Text: medicine and healthcare13341458GPT-5.4
LMArena Text: legal and government13481486GPT-5.4
LMArena Text: business and finance13151474GPT-5.4
Neither model has a result on the other 3 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
Design Arena: websitesNot measured1199Only GPT-5.4 measured
Design Arena: UI componentsNot measured1215Only GPT-5.4 measured
Design Arena: game devNot measured1195Only GPT-5.4 measured
Design Arena: data vizNot measured1195Only GPT-5.4 measured
Design Arena: 3DNot measured1065Only GPT-5.4 measured
Design Arena: all code categoriesNot measured1180Only GPT-5.4 measured
Design Arena: SVGNot measured1142Only GPT-5.4 measured
Design Arena: ASCII artNot measured1188Only GPT-5.4 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index021
General benchmarks for Command A and GPT-5.4
BenchmarkCommand AGPT-5.4Leader
SAGE (Vals AI)Not measured43.3%Only GPT-5.4 measured
MedScribe (Vals AI)55.7%77.5%GPT-5.4
IFBench73.9%73.9%Tie
Long context reasoning (AA-LCR)52.7%82.0%GPT-5.4
DTBench61.3%94.4%GPT-5.4
LMCA10.3%52.0%GPT-5.4
CL-benchNot measured27.9%Only GPT-5.4 measured
Furniture assemblyNot measured37.5%Only GPT-5.4 measured
CL-bench LifeNot measured21.7%Only GPT-5.4 measured
LMArena Text13311469GPT-5.4
LMArena Text: instruction following13091469GPT-5.4
LMArena Text: creative writing13191439GPT-5.4
LMArena VisionNot measured1303Only GPT-5.4 measured
LMArena Text: English13441467GPT-5.4
LMArena Text: non-English13131465GPT-5.4
LMArena Text: Chinese13271520GPT-5.4
LMArena Text: German13421472GPT-5.4
LMArena Text: Japanese12851485GPT-5.4
LMArena Text: Korean12851449GPT-5.4
LMArena Text: French13511493GPT-5.4
LMArena Text: Spanish13471452GPT-5.4
LMArena Text: Russian13141480GPT-5.4
LMArena Text: Polish13241472GPT-5.4
LMArena Text: multi-turn13381482GPT-5.4
LMArena Text: longer queries13341473GPT-5.4
LMArena Text: writing and language13281458GPT-5.4
LMArena Text: entertainment and media13061438GPT-5.4
LMArena Vision: EnglishNot measured1301Only GPT-5.4 measured
LMArena Vision: ChineseNot measured1354Only GPT-5.4 measured
LMArena Vision: reading textNot measured1312Only GPT-5.4 measured
LMArena Vision: humorNot measured1284Only GPT-5.4 measured
LMArena Vision: recognizing thingsNot measured1251Only GPT-5.4 measured
LMArena Vision: creative writingNot measured1283Only GPT-5.4 measured
LMArena DocumentNot measured1471Only GPT-5.4 measured
Neither model has a result on the other 12 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
BenchmarkCommand AGPT-5.4Leader
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$0.010Fits in one request

Command A costs less

Repository review

50K input + 3K output tokens

Command A$0.155Fits in one request
GPT-5.4$0.170Fits in one request

Command A costs less

Agent loop

200K input + 10K output tokens

Command A$0.600Fits in one request
GPT-5.4$0.650Fits in one request

Command A 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
SpecificationCohere Command AOpenAI GPT-5.4
MakerCohereOpenAI
WeightsOpen weightsNo public weights listed
ReleasedMarch 13, 2025March 5, 2026
Context window256K1.05M
Input $/Mtok$2.50$2.50
Output $/Mtok$10.00$15.00
Coding indexNot benchmarked64.4
Independent measurements behind it13
Cost per solved task$2.69$1.02
SourceOpenRouter listingOpenRouter listing

Questions

Is Command A better than GPT-5.4 for coding?

Only GPT-5.4 has a coding score, 64.4 on the Vibe Coding Index; Command A has none, so the two cannot be ranked on coding. Command A has the edge where output tokens cost 1.5x less, and where the benchmark that matters is CaseLaw (Vals AI), where it leads.

Which is cheaper, Command A or GPT-5.4?

Command A costs $2.50 per million input tokens and $10.00 per million output tokens; GPT-5.4 costs $2.50 and $15.00. Per solved SWE-bench Verified task, Command A costs $2.69 and GPT-5.4 $1.02.

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

GPT-5.4, with 1.05M tokens against 256K.

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

50 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's on 3. Where only one model has a result, the page says so instead of naming a winner.

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