Gemini 3 Pro vs GPT-5.2

Pick Gemini 3 Pro if you want the stronger benchmark profile. GPT-5.2 only becomes the better choice if reasoning is the priority or you want the stronger reasoning-first profile.

Gemini 3 Pro has the cleaner provisional overall profile here, landing at 81 versus 79. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

Gemini 3 Pro's sharpest advantage is in multimodal & grounded, where it averages 81.1 against 80.3. The single biggest benchmark swing on the page is ARC-AGI-2, 31.1% to 52.9%. GPT-5.2 does hit back in reasoning, 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 $2.00 input / $12.00 output per 1M tokens for Gemini 3 Pro. GPT-5.2 is the reasoning model in the pair, while Gemini 3 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. Gemini 3 Pro gives you the larger context window at 2M, compared with 400K for GPT-5.2.