Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemini 3 Pro
83
GPT-5.2
83
Treat this as a split decision. Gemini 3 Pro makes more sense if multimodal & grounded is the priority or you need the larger 2M context window; GPT-5.2 is the better fit if reasoning is the priority or you want the stronger reasoning-first profile.
Reasoning
+21.8 difference
Multimodal
+1.5 difference
Gemini 3 Pro
GPT-5.2
$null / $null
$2 / $8
109 t/s
73 t/s
32.65s
130.34s
2M
400K
Treat this as a split decision. Gemini 3 Pro makes more sense if multimodal & grounded is the priority or you need the larger 2M context window; GPT-5.2 is the better fit if reasoning is the priority or you want the stronger reasoning-first profile.
Gemini 3 Pro and GPT-5.2 finish on the same provisional overall score, so this is less about a single winner and more about where the edge shows up. The provisional headline says tie; the benchmark table is where the real choice happens.
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.
Gemini 3 Pro and GPT-5.2 are tied on the provisional overall score, so the right pick depends on which category matters most for your use case.
GPT-5.2 has the edge for reasoning in this comparison, averaging 52.9 versus 31.1. Inside this category, ARC-AGI-2 is the benchmark that creates the most daylight between them.
Gemini 3 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 81 versus 79.5. Inside this category, V* is the benchmark that creates the most daylight between them.
For engineers, researchers, and the plain curious — a weekly brief on new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.