Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Mythos 5
99
DeepSeek V4 Pro (Max)
87
Verified leaderboard positions: Claude Mythos 5 #1 · DeepSeek V4 Pro (Max) #6
Pick Claude Mythos 5 if you want the stronger benchmark profile. DeepSeek V4 Pro (Max) only becomes the better choice if you want the cheaper token bill.
Agentic
+13.0 difference
Coding
+10.0 difference
Knowledge
+8.5 difference
Claude Mythos 5
DeepSeek V4 Pro (Max)
$10 / $50
$1.74 / $3.48
N/A
N/A
N/A
N/A
1M+
1M
Pick Claude Mythos 5 if you want the stronger benchmark profile. DeepSeek V4 Pro (Max) only becomes the better choice if you want the cheaper token bill.
Claude Mythos 5 is clearly ahead on the provisional aggregate, 99 to 87. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Mythos 5's sharpest advantage is in agentic, where it averages 87 against 74. The single biggest benchmark swing on the page is HLE, 64.5% to 37.7%.
Claude Mythos 5 is also the more expensive model on tokens at $10.00 input / $50.00 output per 1M tokens, versus $1.74 input / $3.48 output per 1M tokens for DeepSeek V4 Pro (Max). That is roughly 14.4x on output cost alone. Claude Mythos 5 gives you the larger context window at 1M+, compared with 1M for DeepSeek V4 Pro (Max).
Claude Mythos 5 is ahead on BenchLM's provisional leaderboard, 99 to 87. The biggest single separator in this matchup is HLE, where the scores are 64.5% and 37.7%.
Claude Mythos 5 has the edge for knowledge tasks in this comparison, averaging 74.6 versus 66.1. Inside this category, HLE is the benchmark that creates the most daylight between them.
Claude Mythos 5 has the edge for coding in this comparison, averaging 85.9 versus 75.9. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Claude Mythos 5 has the edge for agentic tasks in this comparison, averaging 87 versus 74. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
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