Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
GPT-4.1 is clearly ahead on the aggregate, 43 to 39. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-4.1's sharpest advantage is in knowledge, where it averages 78.3 against 70.5. The single biggest benchmark swing on the page is GPQA, 66.3 to 56.1. Phi-4 does hit back in coding, so the answer changes if that is the part of the workload you care about most.
GPT-4.1 is also the more expensive model on tokens at $2.00 input / $8.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Phi-4. That is roughly Infinityx on output cost alone. GPT-4.1 gives you the larger context window at 1M, compared with 16K for Phi-4.
Pick GPT-4.1 if you want the stronger benchmark profile. Phi-4 only becomes the better choice if coding is the priority or you want the cheaper token bill.
GPT-4.1
78.3
Phi-4
70.5
GPT-4.1
54.6
Phi-4
82.6
GPT-4.1 is ahead overall, 43 to 39. The biggest single separator in this matchup is GPQA, where the scores are 66.3 and 56.1.
GPT-4.1 has the edge for knowledge tasks in this comparison, averaging 78.3 versus 70.5. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Phi-4 has the edge for coding in this comparison, averaging 82.6 versus 54.6. GPT-4.1 stays close enough that the answer can still flip depending on your workload.
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