Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Sonnet 5
94
o1-pro
28
Pick Claude Sonnet 5 if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
Knowledge
+21.6 difference
Claude Sonnet 5
o1-pro
$3 / $15
$150 / $600
N/A
N/A
N/A
N/A
1M
200K
Pick Claude Sonnet 5 if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
Claude Sonnet 5 is clearly ahead on the provisional aggregate, 94 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 $3.00 input / $15.00 output per 1M tokens for Claude Sonnet 5. That is roughly 40.0x on output cost alone. Claude Sonnet 5 gives you the larger context window at 1M, compared with 200K for o1-pro.
Claude Sonnet 5 is ahead on BenchLM's provisional leaderboard, 94 to 28.
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 57.4. Claude Sonnet 5 stays close enough that the answer can still flip depending on your workload.
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