Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Mythos 5
99
o1-pro
28
Verified leaderboard positions: Claude Mythos 5 #1 · o1-pro unranked
Pick Claude Mythos 5 if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
Knowledge
+4.4 difference
Claude Mythos 5
o1-pro
$10 / $50
$150 / $600
N/A
N/A
N/A
N/A
1M+
200K
Pick Claude Mythos 5 if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
Claude Mythos 5 is clearly ahead on the provisional aggregate, 99 to 28. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o1-pro is also the more expensive model on tokens at $150.00 input / $600.00 output per 1M tokens, versus $10.00 input / $50.00 output per 1M tokens for Claude Mythos 5. That is roughly 12.0x on output cost alone. Claude Mythos 5 gives you the larger context window at 1M+, compared with 200K for o1-pro.
Claude Mythos 5 is ahead on BenchLM's provisional leaderboard, 99 to 28. The biggest single separator in this matchup is GPQA, where the scores are 94.1% and 79%.
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 74.6. Inside this category, GPQA is the benchmark that creates the most daylight between them.
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