Head-to-head comparison across 4benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Mythos Preview
99
Muse Spark
82
Verified leaderboard positions: Claude Mythos Preview #1 · Muse Spark unranked
Pick Claude Mythos Preview if you want the stronger benchmark profile. Muse Spark only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Agentic
+23.4 difference
Coding
+22.1 difference
Knowledge
+24.5 difference
Multimodal
+10.2 difference
Claude Mythos Preview
Muse Spark
$25 / $125
N/A
N/A
N/A
N/A
N/A
1M
262K
Pick Claude Mythos Preview if you want the stronger benchmark profile. Muse Spark only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Claude Mythos Preview is clearly ahead on the provisional aggregate, 99 to 82. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Mythos Preview's sharpest advantage is in knowledge, where it averages 74.9 against 50.4. The single biggest benchmark swing on the page is SWE-bench Pro, 77.8% to 52.4%.
Claude Mythos Preview gives you the larger context window at 1M, compared with 262K for Muse Spark.
Claude Mythos Preview is ahead on BenchLM's provisional leaderboard, 99 to 82. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 77.8% and 52.4%.
Claude Mythos Preview has the edge for knowledge tasks in this comparison, averaging 74.9 versus 50.4. Inside this category, HLE is the benchmark that creates the most daylight between them.
Claude Mythos Preview has the edge for coding in this comparison, averaging 83.8 versus 61.7. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Claude Mythos Preview has the edge for agentic tasks in this comparison, averaging 82.4 versus 59. Inside this category, CyberGym is the benchmark that creates the most daylight between them.
Claude Mythos Preview has the edge for multimodal and grounded tasks in this comparison, averaging 92.4 versus 82.2. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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