GPT-5.5 vs Muse Spark 1.1
Head-to-head comparison across 4benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
GPT-5.5 leads for most workloads.
Based on BenchLM composite scores, July 2026.
GPT-5.5
80
Muse Spark 1.1
78
Verified leaderboard positions: GPT-5.5 #6 · Muse Spark 1.1 unranked
Pick GPT-5.5 if you want the stronger benchmark profile. Muse Spark 1.1 only becomes the better choice if multimodal & grounded is the priority.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | GPT-5.5 | Δ | Muse Spark 1.1 |
|---|---|---|---|
| Multimodal | 70.4 | → 18.0 | 88.4 |
| Knowledge | 57.8 | → 4.3 | 62.1 |
| Coding | 58.6 | → 2.9 | 61.5 |
| Agentic | 81.6 | ← 1.2 | 80.4 |
| Reasoning | 85.0 | — | — |
| Math | 51.7 | — | — |
Operational Comparison
GPT-5.5
Muse Spark 1.1
$5 / $30
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1M
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Quick Verdict
Pick GPT-5.5 if you want the stronger benchmark profile. Muse Spark 1.1 only becomes the better choice if multimodal & grounded is the priority.
GPT-5.5 has the cleaner provisional overall profile here, landing at 80 versus 78. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
GPT-5.5's sharpest advantage is in agentic, where it averages 81.6 against 80.4. The single biggest benchmark swing on the page is HLE, 52.2% to 62.1%. Muse Spark 1.1 does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Benchmark Deep Dive
Frequently Asked Questions (5)
Which is better, GPT-5.5 or Muse Spark 1.1?
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 80 to 78. The biggest single separator in this matchup is HLE, where the scores are 52.2% and 62.1%.
Which is better for knowledge tasks, GPT-5.5 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for knowledge tasks in this comparison, averaging 62.1 versus 57.8. Inside this category, HLE w/o tools is the benchmark that creates the most daylight between them.
Which is better for coding, GPT-5.5 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for coding in this comparison, averaging 61.5 versus 58.6. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, GPT-5.5 or Muse Spark 1.1?
GPT-5.5 has the edge for agentic tasks in this comparison, averaging 81.6 versus 80.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
Which is better for multimodal and grounded tasks, GPT-5.5 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for multimodal and grounded tasks in this comparison, averaging 88.4 versus 70.4. GPT-5.5 stays close enough that the answer can still flip depending on your workload.
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