Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-4.1 nano
28
GPT-5.4 Pro
92
Pick GPT-5.4 Pro if you want the stronger benchmark profile. GPT-4.1 nano only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Knowledge
+1.3 difference
GPT-4.1 nano
GPT-5.4 Pro
$0.1 / $0.4
$30 / $180
181 t/s
74 t/s
0.63s
151.79s
1M
1.05M
Pick GPT-5.4 Pro if you want the stronger benchmark profile. GPT-4.1 nano only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
GPT-5.4 Pro is clearly ahead on the provisional aggregate, 92 to 28. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $0.10 input / $0.40 output per 1M tokens for GPT-4.1 nano. That is roughly 450.0x on output cost alone. GPT-5.4 Pro is the reasoning model in the pair, while GPT-4.1 nano is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 1M for GPT-4.1 nano.
GPT-5.4 Pro is ahead on BenchLM's provisional leaderboard, 92 to 28.
GPT-4.1 nano has the edge for knowledge tasks in this comparison, averaging 50.3 versus 49. GPT-5.4 Pro stays close enough that the answer can still flip depending on your workload.
For engineers, researchers, and the plain curious — a weekly brief on new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.