Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
GPT-5.4 Pro is clearly ahead on the aggregate, 94 to 85. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 Pro's sharpest advantage is in coding, where it averages 89 against 72.7. The single biggest benchmark swing on the page is LiveCodeBench, 86 to 61.
GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $1.50 input / $6.00 output per 1M tokens for GPT-5.1. That is roughly 30.0x on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 200K for GPT-5.1.
Pick GPT-5.4 Pro if you want the stronger benchmark profile. GPT-5.1 only becomes the better choice if you want the cheaper token bill.
GPT-5.4 Pro
88.8
GPT-5.1
81
GPT-5.4 Pro
89
GPT-5.1
72.7
GPT-5.4 Pro
98
GPT-5.1
96.8
GPT-5.4 Pro
96.7
GPT-5.1
92
GPT-5.4 Pro
97
GPT-5.1
89
GPT-5.4 Pro
97
GPT-5.1
89
GPT-5.4 Pro is ahead overall, 94 to 85. The biggest single separator in this matchup is LiveCodeBench, where the scores are 86 and 61.
GPT-5.4 Pro has the edge for knowledge tasks in this comparison, averaging 88.8 versus 81. Inside this category, HLE is the benchmark that creates the most daylight between them.
GPT-5.4 Pro has the edge for coding in this comparison, averaging 89 versus 72.7. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
GPT-5.4 Pro has the edge for math in this comparison, averaging 98 versus 96.8. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.
GPT-5.4 Pro has the edge for reasoning in this comparison, averaging 96.7 versus 92. Inside this category, BBH is the benchmark that creates the most daylight between them.
GPT-5.4 Pro has the edge for instruction following in this comparison, averaging 97 versus 89. Inside this category, IFEval is the benchmark that creates the most daylight between them.
GPT-5.4 Pro has the edge for multilingual tasks in this comparison, averaging 97 versus 89. Inside this category, MGSM is the benchmark that creates the most daylight between them.
Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.
Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.