Grok 4.20 vs Muse Spark 1.1
Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
Muse Spark 1.1 leads for most workloads.
Based on BenchLM composite scores, July 2026.
Grok 4.20
68
Muse Spark 1.1
78
Pick Muse Spark 1.1 if you want the stronger benchmark profile. Grok 4.20 only becomes the better choice if you need the larger 2M context window.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | Grok 4.20 | Δ | Muse Spark 1.1 |
|---|---|---|---|
| Agentic | 47.1 | → 33.3 | 80.4 |
| Multimodal | 70.1 | → 18.3 | 88.4 |
| Coding | 61.1 | → 0.4 | 61.5 |
| Reasoning | 53.3 | — | — |
| Knowledge | — | — | 62.1 |
Operational Comparison
Grok 4.20
Muse Spark 1.1
$2 / $6
N/A
233 t/s
N/A
10.33s
N/A
2M
1M
Quick Verdict
Pick Muse Spark 1.1 if you want the stronger benchmark profile. Grok 4.20 only becomes the better choice if you need the larger 2M context window.
Muse Spark 1.1 is clearly ahead on the provisional aggregate, 78 to 68. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Muse Spark 1.1's sharpest advantage is in agentic, where it averages 80.4 against 47.1. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 47.1% to 80%.
Grok 4.20 gives you the larger context window at 2M, compared with 1M for Muse Spark 1.1.
Benchmark Deep Dive
Frequently Asked Questions (4)
Which is better, Grok 4.20 or Muse Spark 1.1?
Muse Spark 1.1 is ahead on BenchLM's provisional leaderboard, 78 to 68. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 47.1% and 80%.
Which is better for coding, Grok 4.20 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for coding in this comparison, averaging 61.5 versus 61.1. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Grok 4.20 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for agentic tasks in this comparison, averaging 80.4 versus 47.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for multimodal and grounded tasks, Grok 4.20 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for multimodal and grounded tasks in this comparison, averaging 88.4 versus 70.1. Inside this category, CharXiv is the benchmark that creates the most daylight between them.
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