Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.4 nano
60
o1-pro
29
Pick GPT-5.4 nano if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
Knowledge
+25.8 difference
GPT-5.4 nano
o1-pro
$0.2 / $1.25
$150 / $600
191 t/s
N/A
3.64s
N/A
400K
200K
Pick GPT-5.4 nano if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
GPT-5.4 nano is clearly ahead on the provisional aggregate, 60 to 29. 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 $0.20 input / $1.25 output per 1M tokens for GPT-5.4 nano. That is roughly 480.0x on output cost alone. GPT-5.4 nano gives you the larger context window at 400K, compared with 200K for o1-pro.
GPT-5.4 nano is ahead on BenchLM's provisional leaderboard, 60 to 29. The biggest single separator in this matchup is GPQA, where the scores are 82.8% and 79%.
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 53.2. Inside this category, GPQA is the benchmark that creates the most daylight between them.
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