DeepSeek V4 Pro vs GPT-5.2

Pick GPT-5.2 if you want the stronger benchmark profile. DeepSeek V4 Pro only becomes the better choice if agentic is the priority or you want the cheaper token bill.

GPT-5.2 is clearly ahead on the provisional aggregate, 82 to 71. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-5.2's sharpest advantage is in knowledge, where it averages 92.4 against 49.4. The single biggest benchmark swing on the page is GPQA, 72.9% to 92.4%. DeepSeek V4 Pro does hit back in agentic, so the answer changes if that is the part of the workload you care about most.

GPT-5.2 is also the more expensive model on tokens at $1.75 input / $14.00 output per 1M tokens, versus $1.74 input / $3.48 output per 1M tokens for DeepSeek V4 Pro. That is roughly 4.0x on output cost alone. GPT-5.2 is the reasoning model in the pair, while DeepSeek V4 Pro 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. DeepSeek V4 Pro gives you the larger context window at 1M, compared with 400K for GPT-5.2.