GPT-5.4 Pro vs Muse Spark 1.1
Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
GPT-5.4 Pro leads for most workloads.
Based on BenchLM composite scores, July 2026.
GPT-5.4 Pro
84
Muse Spark 1.1
78
Pick GPT-5.4 Pro if you want the stronger benchmark profile. Muse Spark 1.1 only becomes the better choice if knowledge is the priority.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | GPT-5.4 Pro | Δ | Muse Spark 1.1 |
|---|---|---|---|
| Knowledge | 48.4 | → 13.7 | 62.1 |
| Agentic | 89.3 | ← 8.9 | 80.4 |
| Multimodal | 94.0 | ← 5.6 | 88.4 |
| Coding | — | — | 61.5 |
| Reasoning | 83.3 | — | — |
| Math | 50.0 | — | — |
Operational Comparison
GPT-5.4 Pro
Muse Spark 1.1
$30 / $180
N/A
74 t/s
N/A
151.79s
N/A
1.05M
1M
Quick Verdict
Pick GPT-5.4 Pro if you want the stronger benchmark profile. Muse Spark 1.1 only becomes the better choice if knowledge is the priority.
GPT-5.4 Pro is clearly ahead on the provisional aggregate, 84 to 78. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 Pro's sharpest advantage is in agentic, where it averages 89.3 against 80.4. The single biggest benchmark swing on the page is HLE, 58.7% to 62.1%. Muse Spark 1.1 does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 1M for Muse Spark 1.1.
Benchmark Deep Dive
Frequently Asked Questions (4)
Which is better, GPT-5.4 Pro or Muse Spark 1.1?
GPT-5.4 Pro is ahead on BenchLM's provisional leaderboard, 84 to 78. The biggest single separator in this matchup is HLE, where the scores are 58.7% and 62.1%.
Which is better for knowledge tasks, GPT-5.4 Pro or Muse Spark 1.1?
Muse Spark 1.1 has the edge for knowledge tasks in this comparison, averaging 62.1 versus 48.4. Inside this category, HLE w/o tools is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, GPT-5.4 Pro or Muse Spark 1.1?
GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 80.4. Muse Spark 1.1 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 1.1?
GPT-5.4 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 94 versus 88.4. Muse Spark 1.1 stays close enough that the answer can still flip depending on your workload.
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