Compare · ModelsLive · 2 picked · head to head
GPT-5.4 Pro vs Muse Spark
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.4 Pro wins on 4/5 benchmarks
GPT-5.4 Pro wins 4 of 5 shared benchmarks. Leads in math · knowledge.
Category leads
math·GPT-5.4 Proknowledge·GPT-5.4 Pro
Hype vs Reality
Attention vs performance
GPT-5.4 Pro
#41 by perf·no signal
Muse Spark
#83 by perf·no signal
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
U
Unknown
private · undisclosed
Head to head
5 benchmarks · 2 models
GPT-5.4 ProMuse Spark
FrontierMath-2025-02-28-Private
GPT-5.4 Pro leads by +11.0
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
GPT-5.4 Pro
50.0
Muse Spark
39.0
FrontierMath-Tier-4-2025-07-01-Private
GPT-5.4 Pro leads by +22.9
FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning.
GPT-5.4 Pro
37.5
Muse Spark
14.6
GPQA diamond
GPT-5.4 Pro leads by +6.4
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GPT-5.4 Pro
92.8
Muse Spark
86.4
HLE
GPT-5.4 Pro leads by +3.9
HLE (Humanity's Last Exam) · a reasoning benchmark designed to be the hardest public evaluation of AI. Questions span mathematics, physics, philosophy, and logic · curated to be at or beyond the frontier of human expert capability. Tested with and without tool augmentation. Claude Opus 4.7 scores 46.9% without tools and 54.7% with tools · making it one of the few benchmarks where the top score is below 60%.
GPT-5.4 Pro
41.5
Muse Spark
37.6
SimpleQA Verified
Muse Spark leads by +18.5
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
GPT-5.4 Pro
47.8
Muse Spark
66.3
Full benchmark table
| Benchmark | GPT-5.4 Pro | Muse Spark |
|---|---|---|
FrontierMath-2025-02-28-Private FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning. | 50.0 | 39.0 |
FrontierMath-Tier-4-2025-07-01-Private FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning. | 37.5 | 14.6 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 92.8 | 86.4 |
HLE HLE (Humanity's Last Exam) · a reasoning benchmark designed to be the hardest public evaluation of AI. Questions span mathematics, physics, philosophy, and logic · curated to be at or beyond the frontier of human expert capability. Tested with and without tool augmentation. Claude Opus 4.7 scores 46.9% without tools and 54.7% with tools · making it one of the few benchmarks where the top score is below 60%. | 41.5 | 37.6 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 47.8 | 66.3 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $30.00 | $180.00 | 1.1M tokens (~525 books) | $675.00 | |
U Muse Spark | — | — | — | — |