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Model comparison

GPT-5.4 Pro vs Muse Spark

Data verified

Head-to-head evidence from 7 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

60.89/100
Margin
10.2pts
winning →
71.04/100
5 category wins0 category wins

Public leaderboard positions: GPT-5.4 Pro #44 (Estimated); Muse Spark #13 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. GPT-5.4 Pro and Muse Spark share 7 comparable benchmark results. 5 of 8 categories are comparable. 5 results are unique to GPT-5.4 Pro; 32 to Muse Spark.

Updated July 23, 2026
Shared results
7
GPT-5.4 Pro only
5
Muse Spark only
32
Comparable categories
5 / 8

Pick Muse Spark if you want the stronger benchmark profile. GPT-5.4 Pro only becomes the better choice if reasoning is the priority or you need the larger 1.05M context window.

Confidence note. This is a partial-evidence comparison with 7 shared benchmark results across 4 evidence categories; 5 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Muse Spark is clearly ahead on the BenchAlign aggregate, 71.04 to 60.89. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 262K for Muse Spark.

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 Muse Spark
CategoryGPT-5.4 ProΔMuse Spark
ReasoningGPT-5.4 Pro83.3Margin← 40.8Muse Spark42.5
AgenticGPT-5.4 Pro89.3Margin← 30.3Muse Spark59.0
MathGPT-5.4 Pro46.9Margin← 14.0Muse Spark32.9
MultimodalGPT-5.4 Pro94.0Margin← 11.5Muse Spark82.5
KnowledgeGPT-5.4 Pro58.7Margin← 8.3Muse Spark50.4
CodingGPT-5.4 ProNot measuredMarginNo overlapMuse Spark67.8

Decisive benchmark drivers

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

More
A · GPT-5.4 ProB · Muse Spark

  1. ARC-AGI-2

    Reasoning
    Source ↗
    A 83.3%B 42.5%
    Winner: GPT-5.4 ProΔ 40.8
    ARC-AGI-2: GPT-5.4 Pro scored 83.3%; Muse Spark scored 42.5%. GPT-5.4 Pro wins this benchmark.

  2. FrontierMath v2 (Tier 4)

    Math
    Source ↗
    A 37.500%B 14.600%
    Winner: GPT-5.4 ProΔ 22.9
    FrontierMath v2 (Tier 4): GPT-5.4 Pro scored 37.500%; Muse Spark scored 14.600%. GPT-5.4 Pro wins this benchmark.

  3. MMMU-Pro

    Multimodal
    Source ↗
    A 94%B 80.4%
    Winner: GPT-5.4 ProΔ 13.6
    MMMU-Pro: GPT-5.4 Pro scored 94%; Muse Spark scored 80.4%. GPT-5.4 Pro wins this benchmark.

  4. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 50.000%B 39.000%
    Winner: GPT-5.4 ProΔ 11
    FrontierMath v2 (Tiers 1-3): GPT-5.4 Pro scored 50.000%; Muse Spark scored 39.000%. GPT-5.4 Pro wins this benchmark.

  5. HLE

    Knowledge
    Source ↗
    A 58.7%B 50.4%
    Winner: GPT-5.4 ProΔ 8.3
    HLE: GPT-5.4 Pro scored 58.7%; Muse Spark scored 50.4%. 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 ProMuse SparkComparison
Input / output priceUSD per 1M tokensGPT-5.4 Pro$30 input / $180 outputMuse SparkNot availableA complete price comparison is not available.
Generation speedtokens per secondGPT-5.4 Pro74 tok/sMuse SparkNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenGPT-5.4 Pro151.79 sMuse SparkNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensGPT-5.4 Pro1.05MMuse Spark262KGPT-5.4 Pro lists the larger context window.

Benchmark Deep Dive

AgenticGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProMuse SparkResult
BrowseCompSource 89.3%—Not comparable
Terminal-Bench 2.0Source —59%Not comparable
τ²-bench resultsSource —91.5%Not comparable
DeepSearchQASource —74.8%Not comparable
CyberGymSource —43.5%Not comparable
Claw-EvalSource —63.8%Not comparable
AA Agentic IndexSource —28.7%Not comparable
GDPval-AASource —32.2%Not comparable
GDPval-AASource —1144Not comparable
Coding
BenchmarkGPT-5.4 ProMuse SparkResult
SWE-bench VerifiedSource —77.4%Not comparable
SWE-bench ProSource —52.4%Not comparable
LiveCodeBench ProSource —80.0%Not comparable
Vibe Code BenchSource —19.67%Not comparable
AA Coding IndexSource —58.6%Not comparable
AA-SciCodeSource —51.5%Not comparable
ReasoningGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProMuse SparkResult
ARC-AGI-2Source 83.3%42.5%GPT-5.4 Pro leads
CritPtSource 30.0%11.3%GPT-5.4 Pro leads
AA-LCRSource —69.7%Not comparable
KnowledgeGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProMuse SparkResult
HLESource 58.7%50.4%GPT-5.4 Pro leads
FrontierScienceSource 36.7%—Not comparable
FrontierScience ResearchSource 36.7%—Not comparable
HLE w/o toolsSource 42.7%42.8%Muse Spark leads
GPQA-DSource —89.5%Not comparable
HealthBench HardSource —42.8%Not comparable
MedXpertQA (Text)Source —52.6%Not comparable
Artificial Analysis Intelligence IndexSource —43.1%Not comparable
AA-GPQA DiamondSource —88.4%Not comparable
AA-HLESource —39.9%Not comparable
AA-Omniscience IndexSource —4.1%Not comparable
AA-Omniscience AccuracySource —44.6%Not comparable
AA-Omniscience Hallucination RateSource —73.2%Not comparable
MathGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProMuse SparkResult
IPhO 2025 (Theory)Source 93.5%—Not comparable
FrontierMath (legacy)Source 50%—Not comparable
FrontierMath v2 (Tiers 1-3)Source 50.000%39.000%GPT-5.4 Pro leads
FrontierMath v2 (Tier 4)Source 37.500%14.600%GPT-5.4 Pro leads
MultimodalGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProMuse SparkResult
MMMU-ProSource 94%80.4%GPT-5.4 Pro leads
CharXivSource —86.4%Not comparable
ERQASource —64.7%Not comparable
SimpleVQASource —71.3%Not comparable
ScreenSpot ProSource —84.1%Not comparable
ZeroBenchSource —33.0%Not comparable
MedXpertQA (MM)Source —78.4%Not comparable
AA-MMMU-ProSource —80.5%Not comparable
Inst. Following
BenchmarkGPT-5.4 ProMuse SparkResult
AA-IFBenchSource —75.9%Not comparable
Frequently Asked Questions (6)

Which is better, GPT-5.4 Pro or Muse Spark?

Muse Spark is ahead on BenchLM's BenchAlign leaderboard, 71.04 to 60.89. The biggest single separator in this matchup is ARC-AGI-2, where the scores are 83.3% and 42.5%.

Which is better for knowledge tasks, GPT-5.4 Pro or Muse Spark?

GPT-5.4 Pro has the edge for knowledge tasks in this comparison, averaging 58.7 versus 50.4. Inside this category, HLE is the benchmark that creates the most daylight between them.

Which is better for math, GPT-5.4 Pro or Muse Spark?

GPT-5.4 Pro has the edge for math in this comparison, averaging 46.9 versus 32.9. Inside this category, FrontierMath v2 (Tier 4) is the benchmark that creates the most daylight between them.

Which is better for reasoning, GPT-5.4 Pro or Muse Spark?

GPT-5.4 Pro has the edge for reasoning in this comparison, averaging 83.3 versus 42.5. Inside this category, ARC-AGI-2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GPT-5.4 Pro or Muse Spark?

GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 59. Muse Spark stays close enough that the answer can still flip depending on your workload.

Which is better for multimodal and grounded tasks, GPT-5.4 Pro or Muse Spark?

GPT-5.4 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 94 versus 82.5. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

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