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GPT-5.4 vs Llama 4 Scout

GPT-5.4 leads Llama 4 Scout on the Artificial Analysis Intelligence Index, 39.0 to 6.5, and Llama 4 Scout costs 30.0x less per output token ($0.50 vs $15.00 per million). Updated October 22, 2026; 70 benchmarks have a result for both.

Replace GPT-5.4 Replace Llama 4 Scout
GPT-5.4OpenAI
Coding
64.4
Overall
69.6
Output $/M
$15.00
70
Llama 4 ScoutMeta Llama
Coding
No data
Overall
24.9
Output $/M
$0.50
0
vs boards won of 70 shared

GPT-5.4 or Llama 4 Scout: which to pick

Only GPT-5.4 has a coding score, 64.4 on the Vibe Coding Index; Llama 4 Scout has none, so the two cannot be ranked on coding.

Pick Llama 4 Scout for output tokens 30.0x cheaper ($0.50 vs $15.00 per million) and a larger context window (1.31M against 1.05M tokens).

Model AGPT-5.4OpenAI64.4/1003 independent benchmarks$1.02 per solved taskModel BLlama 4 ScoutMeta LlamaNot benchmarkedNo coding benchmark$1.276 per solved task
Shared results
70
GPT-5.4 only
40
Llama 4 Scout only
12
Like-for-like categories
8 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
GPT-5.4 64.4 from 3 benchmarks, Llama 4 Scout not benchmarked.
Widest category
Agentic work, 71.6 points apart on average over 1 shared benchmark.
Widest single gap
ARC-AGI: GPT-5.4 93.7% against Llama 4 Scout 0.5%, 93.2 points apart on a 0 to 100 scale.
Output price
GPT-5.4 $15.00 against Llama 4 Scout $0.50 per million output tokens, 30.0x apart.
Context window
GPT-5.4 takes 1.05M tokens, Llama 4 Scout 1.31M.

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
CategoryGPT-5.4BarsLlama 4 ScoutTies
Coding50
Intelligence20
Agentic work10
Reasoning130
Math40
Knowledge110
Web design50
General290
All shared boards700
CodingLike-for-likeSix of these boards feed the Vibe Coding Index50
Coding benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
SWE-bench VerifiedNot measured9.1%Only Llama 4 Scout measured
LMArena WebDev1464Not measuredOnly GPT-5.4 measured
AA Coding Index71.18.2GPT-5.4
LiveCodeBench (Vals AI)84.1%38.5%GPT-5.4
SWE-bench Verified (Vals AI)78.2%Not measuredOnly GPT-5.4 measured
Vibe Code Bench (Vals AI)67.4%Not measuredOnly GPT-5.4 measured
Code migration (Vals AI)35.0%Not measuredOnly GPT-5.4 measured
ProgramBench (Vals AI)0.5%Not measuredOnly GPT-5.4 measured
SkillsBench (Vals AI)51.7%Not measuredOnly GPT-5.4 measured
LiveCodeBench (Artificial Analysis run)Not measured29.9%Only Llama 4 Scout measured
SciCodeNot measured21.3%Only Llama 4 Scout measured
Terminal-Bench Hard (Artificial Analysis run)57.6%1.5%GPT-5.4
Terminal-Bench81.8%Not measuredOnly GPT-5.4 measured
GSO-Bench31.4%Not measuredOnly GPT-5.4 measured
WeirdML77.7%Not measuredOnly GPT-5.4 measured
MirrorCode15.6%Not measuredOnly GPT-5.4 measured
ALE-Bench1607.0Not measuredOnly GPT-5.4 measured
LMArena Text: coding14961286GPT-5.4
LMArena Text: software and IT14911286GPT-5.4
LMArena WebDev: React1454Not measuredOnly GPT-5.4 measured
LMArena WebDev: HTML1478Not measuredOnly GPT-5.4 measured
LMArena WebDev: from an image1436Not measuredOnly GPT-5.4 measured
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
AA Intelligence Index39.06.5GPT-5.4
Epoch Capabilities Index157.3129.6GPT-5.4
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
AA Agentic IndexNot measured0.5Only Llama 4 Scout measured
Design Arena: agents building web apps1059Not measuredOnly GPT-5.4 measured
Design Arena: agents building full-stack apps1017Not measuredOnly GPT-5.4 measured
Design Arena: agents building mobile apps1087Not measuredOnly GPT-5.4 measured
Design Arena: agents building Android apps1031Not measuredOnly GPT-5.4 measured
Design Arena: agents building Godot games1135Not measuredOnly GPT-5.4 measured
τ²-Bench Telecom87.1%15.5%GPT-5.4
APEX-Agents52.4%Not measuredOnly GPT-5.4 measured
METR time horizons74.3%Not measuredOnly GPT-5.4 measured
DeepResearch Bench35.1%Not measuredOnly GPT-5.4 measured
PostTrainBench19.0%Not measuredOnly GPT-5.4 measured
Vending-Bench 2$6,144Not measuredOnly GPT-5.4 measured
Berkeley Function Calling Leaderboard (BFCL)Not measured28.1%Only Llama 4 Scout measured
Neither model has a result on the other 28 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index130
Reasoning benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
GPQA Diamond91.7%47.0%GPT-5.4
MMMU Pro (Vals AI)87.5%58.8%GPT-5.4
GPQA Diamond (Artificial Analysis run)92.0%58.7%GPT-5.4
Humanity's Last Exam (Artificial Analysis run)43.7%3.8%GPT-5.4
GPQA Diamond (Epoch AI run)93.3%51.8%GPT-5.4
ARC-AGI93.7%0.5%GPT-5.4
ARC-AGI-274.0%0.0%GPT-5.4
Chess puzzles48.0%Not measuredOnly GPT-5.4 measured
Mystery game puzzles37.0%Not measuredOnly GPT-5.4 measured
EBR-bench25.4%Not measuredOnly GPT-5.4 measured
LMArena Text: hard prompts14851266GPT-5.4
LMArena Text: expert15071235GPT-5.4
LMArena Text: hard prompts in English14791293GPT-5.4
LMArena Vision: diagrams13271125GPT-5.4
LMArena Vision: homework13361148GPT-5.4
Kagi LLM Benchmark63.8%36.9%GPT-5.4
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
AIME96.7%19.0%GPT-5.4
MATH 500 (Vals AI)Not measured79.2%Only Llama 4 Scout measured
MGSM (Vals AI)Not measured88.0%Only Llama 4 Scout measured
AA Math IndexNot measured14.0Only Llama 4 Scout measured
AIME 2025 (Artificial Analysis run)Not measured14.0%Only Llama 4 Scout measured
OTIS Mock AIME97.8%7.8%GPT-5.4
FrontierMath, tiers 1 to 378.6%Not measuredOnly GPT-5.4 measured
FrontierMath, tier 449.0%Not measuredOnly GPT-5.4 measured
ProofBench56.0%Not measuredOnly GPT-5.4 measured
MATH level 5Not measured62.3%Only Llama 4 Scout measured
LMArena Text: math14881287GPT-5.4
LMArena Text: mathematical work14971286GPT-5.4
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index110
Knowledge benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
MMLU Pro87.5%69.6%GPT-5.4
LegalBench (Vals AI)86.0%72.0%GPT-5.4
CaseLaw (Vals AI)63.8%Not measuredOnly GPT-5.4 measured
CorpFin (Vals AI)65.3%46.8%GPT-5.4
TaxEval (Vals AI)74.0%55.2%GPT-5.4
MortgageTax (Vals AI)68.3%57.8%GPT-5.4
MedQA (Vals AI)96.1%50.9%GPT-5.4
MedCode (Vals AI)41.3%23.3%GPT-5.4
MMLU Pro (Artificial Analysis run)Not measured75.2%Only Llama 4 Scout measured
SimpleQA Verified45.1%Not measuredOnly GPT-5.4 measured
LMArena Text: science14791278GPT-5.4
LMArena Text: medicine and healthcare14581275GPT-5.4
LMArena Text: legal and government14861285GPT-5.4
LMArena Text: business and finance14741257GPT-5.4
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index50
Web design benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
Design Arena: websites1198750GPT-5.4
Design Arena: UI components1212765GPT-5.4
Design Arena: game dev1194772GPT-5.4
Design Arena: data viz1196896GPT-5.4
Design Arena: 3D1065Not measuredOnly GPT-5.4 measured
Design Arena: all code categories1179789GPT-5.4
Design Arena: SVG1141Not measuredOnly GPT-5.4 measured
Design Arena: ASCII art1188Not measuredOnly 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 index290
General benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
SAGE (Vals AI)43.3%34.8%GPT-5.4
MedScribe (Vals AI)77.5%50.6%GPT-5.4
IFBench73.9%39.5%GPT-5.4
Long context reasoning (AA-LCR)82.0%27.7%GPT-5.4
DTBench94.4%57.9%GPT-5.4
LMCA52.0%12.0%GPT-5.4
Fiction.LiveBenchNot measured36.0%Only Llama 4 Scout measured
CL-bench27.9%Not measuredOnly GPT-5.4 measured
Furniture assembly37.5%Not measuredOnly GPT-5.4 measured
CL-bench Life21.7%Not measuredOnly GPT-5.4 measured
LMArena Text14691279GPT-5.4
LMArena Text: instruction following14691248GPT-5.4
LMArena Text: creative writing14391249GPT-5.4
LMArena Vision13031118GPT-5.4
LMArena Text: English14671304GPT-5.4
LMArena Text: non-English14651252GPT-5.4
LMArena Text: Chinese15201255GPT-5.4
LMArena Text: German14721273GPT-5.4
LMArena Text: Japanese14851206GPT-5.4
LMArena Text: Korean14491207GPT-5.4
LMArena Text: French14931283GPT-5.4
LMArena Text: Spanish14521278GPT-5.4
LMArena Text: Russian14801263GPT-5.4
LMArena Text: Polish14721265GPT-5.4
LMArena Text: multi-turn14821280GPT-5.4
LMArena Text: longer queries14731265GPT-5.4
LMArena Text: writing and language14581269GPT-5.4
LMArena Text: entertainment and media14381242GPT-5.4
LMArena Vision: English13011143GPT-5.4
LMArena Vision: Chinese13541106GPT-5.4
LMArena Vision: reading text13121117GPT-5.4
LMArena Vision: humor12841102GPT-5.4
LMArena Vision: recognizing things1251Not measuredOnly GPT-5.4 measured
LMArena Vision: creative writing12831126GPT-5.4
LMArena Document1471Not measuredOnly GPT-5.4 measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 and Llama 4 Scout
BenchmarkGPT-5.4Llama 4 ScoutLeader
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

GPT-5.4$0.010Fits in one request
Llama 4 Scout$0.0004Fits in one request

Llama 4 Scout costs less

Repository review

50K input + 3K output tokens

GPT-5.4$0.170Fits in one request
Llama 4 Scout$0.010Fits in one request

Llama 4 Scout costs less

Agent loop

200K input + 10K output tokens

GPT-5.4$0.650Fits in one request
Llama 4 Scout$0.040Fits in one request

Llama 4 Scout 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 GPT-5.4 and Llama 4 Scout
SpecificationOpenAI GPT-5.4Meta Llama 4 Scout
MakerOpenAIMeta Llama
WeightsNo public weights listedOpen weights
ReleasedMarch 5, 2026April 5, 2025
Context window1.05M1.31M
Input $/Mtok$2.50$0.175
Output $/Mtok$15.00$0.50
Coding index64.4Not benchmarked
Independent measurements behind it30
Cost per solved task$1.02$1.276
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 better than Llama 4 Scout for coding?

Only GPT-5.4 has a coding score, 64.4 on the Vibe Coding Index; Llama 4 Scout has none, so the two cannot be ranked on coding. Pick Llama 4 Scout for output tokens 30.0x cheaper ($0.50 vs $15.00 per million) and a larger context window (1.31M against 1.05M tokens).

Which is cheaper, GPT-5.4 or Llama 4 Scout?

GPT-5.4 costs $2.50 per million input tokens and $15.00 per million output tokens; Llama 4 Scout costs $0.175 and $0.50. Per solved SWE-bench Verified task, GPT-5.4 costs $1.02 and Llama 4 Scout $1.276.

Which has the bigger context window, GPT-5.4 or Llama 4 Scout?

Llama 4 Scout, with 1.31M tokens against 1.05M.

How many benchmarks is the GPT-5.4 vs Llama 4 Scout comparison based on?

70 benchmarks have a result for both models as of October 22, 2026. GPT-5.4's coding index rests on 3 independent benchmarks and Llama 4 Scout's on 0. Where only one model has a result, the page says so instead of naming a winner.

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