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Model comparison

GPT-5.4 Pro vs Llama 4 Scout

Data verified

Head-to-head evidence from 2 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

60.89/100
Margin
21.0pts
← winning
39.87/100
0 category wins0 category wins

Public leaderboard positions: GPT-5.4 Pro #44 (Estimated); Llama 4 Scout #174 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. GPT-5.4 Pro and Llama 4 Scout share 2 comparable benchmark results. 0 of 8 categories are comparable. 10 results are unique to GPT-5.4 Pro; 16 to Llama 4 Scout.

Updated July 23, 2026
Shared results
2
GPT-5.4 Pro only
10
Llama 4 Scout only
16
Comparable categories
0 / 8

Benchmark data for GPT-5.4 Pro and Llama 4 Scout is coming soon on BenchLM.

Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 2 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.

GPT-5.4 Pro is priced at $30.00 input / $180.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Llama 4 Scout. Llama 4 Scout has the larger context window at 10M, compared with 1.05M for GPT-5.4 Pro.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for GPT-5.4 Pro and Llama 4 Scout
CategoryGPT-5.4 ProΔLlama 4 Scout
AgenticGPT-5.4 Pro89.3MarginNo overlapLlama 4 ScoutNot measured
ReasoningGPT-5.4 Pro83.3MarginNo overlapLlama 4 ScoutNot measured
KnowledgeGPT-5.4 Pro58.7MarginNo overlapLlama 4 ScoutNot measured
MathGPT-5.4 Pro46.9MarginNo overlapLlama 4 ScoutNot measured
MultimodalGPT-5.4 Pro94.0MarginNo overlapLlama 4 ScoutNot measured

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · GPT-5.4 ProB · Llama 4 Scout

  1. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 50.000%B 0.000%
    Winner: GPT-5.4 ProΔ 50
    FrontierMath v2 (Tiers 1-3): GPT-5.4 Pro scored 50.000%; Llama 4 Scout scored 0.000%. GPT-5.4 Pro wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricGPT-5.4 ProLlama 4 ScoutComparison
Input / output priceUSD per 1M tokensGPT-5.4 Pro$30 input / $180 outputLlama 4 Scout$0 input / $0 outputLlama 4 Scout has the lower combined listed price.
Generation speedtokens per secondGPT-5.4 Pro74 tok/sLlama 4 Scout128 tok/sLlama 4 Scout has the higher measured throughput.
First-answer latencyseconds to first tokenGPT-5.4 Pro151.79 sLlama 4 Scout0.70 sLlama 4 Scout reaches the first token sooner.
Context windowmaximum listed tokensGPT-5.4 Pro1.05MLlama 4 Scout10MLlama 4 Scout lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
BrowseCompSource 89.3%—Not comparable
AA Agentic IndexSource —1.1%Not comparable
τ²-bench resultsSource —15.5%Not comparable
GDPval-AASource —0.0%Not comparable
GDPval-AASource —90Not comparable
Coding
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
AA Coding IndexSource —8.2%Not comparable
AA-SciCodeSource —17.0%Not comparable
Reasoning
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
ARC-AGI-2Source 83.3%—Not comparable
CritPtSource 30.0%0.0%GPT-5.4 Pro leads
AA-LCRSource —25.8%Not comparable
Knowledge
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
HLESource 58.7%—Not comparable
FrontierScienceSource 36.7%—Not comparable
FrontierScience ResearchSource 36.7%—Not comparable
HLE w/o toolsSource 42.7%—Not comparable
Artificial Analysis Intelligence IndexSource —10.0%Not comparable
AA-GPQA DiamondSource —58.7%Not comparable
AA-HLESource —4.3%Not comparable
AA-Omniscience IndexSource —-52.4%Not comparable
AA-Omniscience AccuracySource —14.6%Not comparable
AA-Omniscience Hallucination RateSource —78.3%Not comparable
Math
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
IPhO 2025 (Theory)Source 93.5%—Not comparable
FrontierMath (legacy)Source 50%—Not comparable
FrontierMath v2 (Tiers 1-3)Source 50.000%0.000%GPT-5.4 Pro leads
FrontierMath v2 (Tier 4)Source 37.500%—Not comparable
Multimodal
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
MMMU-ProSource 94%—Not comparable
AA-MMMU-ProSource —52.9%Not comparable
Design Arena WebsiteSource —780Not comparable
Inst. Following
BenchmarkGPT-5.4 ProLlama 4 ScoutResult
AA-IFBenchSource —39.5%Not comparable
Frequently Asked Questions (3)

Can I compare GPT-5.4 Pro and Llama 4 Scout on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for GPT-5.4 Pro and Llama 4 Scout today?

GPT-5.4 Pro: $30.00 input / $180.00 output per 1M tokens Llama 4 Scout: $0.00 input / $0.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

Self-host vs API cost

Estimates at 50,000 req/day · 1000 tokens/req average.

GPT-5.4 Pro
API / mo$157,500
Self-host / moNot listed
Break-even—
Proprietary model — self-hosting not applicable.
Llama 4 Scout
API / mo$0
Self-host / mo$2,278
Break-even—
Model the full break-even

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Last updated: July 23, 2026

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