Grok 4.5 vs Muse Spark
Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
Muse Spark leads for most workloads by a narrow margin.
Based on BenchLM composite scores, July 2026.
Grok 4.5
75
Muse Spark
76
Pick Muse Spark if you want the stronger benchmark profile. Grok 4.5 only becomes the better choice if agentic is the priority or you need the larger 500K context window.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | Grok 4.5 | Δ | Muse Spark |
|---|---|---|---|
| Agentic | 83.3 | ← 24.3 | 59.0 |
| Coding | 64.7 | ← 3.0 | 61.7 |
| Reasoning | — | — | 42.5 |
| Knowledge | — | — | 50.4 |
| Multimodal | — | — | 82.5 |
Operational Comparison
Grok 4.5
Muse Spark
$2 / $6
N/A
N/A
N/A
N/A
N/A
500K
262K
Quick Verdict
Pick Muse Spark if you want the stronger benchmark profile. Grok 4.5 only becomes the better choice if agentic is the priority or you need the larger 500K context window.
Muse Spark finishes one point ahead on BenchLM's provisional leaderboard, 76 to 75. That is enough to call, but not enough to treat as a blowout. This matchup comes down to a few meaningful edges rather than one model dominating the board.
Grok 4.5 gives you the larger context window at 500K, compared with 262K for Muse Spark.
Benchmark Deep Dive
Frequently Asked Questions (3)
Which is better, Grok 4.5 or Muse Spark?
Muse Spark is ahead on BenchLM's provisional leaderboard, 76 to 75. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 83.3% and 59%.
Which is better for coding, Grok 4.5 or Muse Spark?
Grok 4.5 has the edge for coding in this comparison, averaging 64.7 versus 61.7. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Grok 4.5 or Muse Spark?
Grok 4.5 has the edge for agentic tasks in this comparison, averaging 83.3 versus 59. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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