Head-to-head comparison across 4benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.8
93
Muse Spark
81
Verified leaderboard positions: Claude Opus 4.8 #3 · Muse Spark unranked
Pick Claude Opus 4.8 if you want the stronger benchmark profile. Muse Spark only becomes the better choice if multimodal & grounded is the priority.
Agentic
+21.1 difference
Coding
+14.7 difference
Knowledge
+19.7 difference
Multimodal
+6.1 difference
Claude Opus 4.8
Muse Spark
$5 / $25
N/A
N/A
N/A
N/A
N/A
1M
262K
Pick Claude Opus 4.8 if you want the stronger benchmark profile. Muse Spark only becomes the better choice if multimodal & grounded is the priority.
Claude Opus 4.8 is clearly ahead on the provisional aggregate, 93 to 81. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Opus 4.8's sharpest advantage is in agentic, where it averages 80.1 against 59. The single biggest benchmark swing on the page is SWE-bench Pro, 69.2% to 52.4%. Muse Spark does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Claude Opus 4.8 gives you the larger context window at 1M, compared with 262K for Muse Spark.
Claude Opus 4.8 is ahead on BenchLM's provisional leaderboard, 93 to 81. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 69.2% and 52.4%.
Claude Opus 4.8 has the edge for knowledge tasks in this comparison, averaging 70.1 versus 50.4. Inside this category, HLE is the benchmark that creates the most daylight between them.
Claude Opus 4.8 has the edge for coding in this comparison, averaging 76.4 versus 61.7. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Claude Opus 4.8 has the edge for agentic tasks in this comparison, averaging 80.1 versus 59. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
Muse Spark has the edge for multimodal and grounded tasks in this comparison, averaging 82.2 versus 76.1. Inside this category, ScreenSpot Pro is the benchmark that creates the most daylight between them.
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