Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.5
80
Gemini 3 Pro
83
Verified leaderboard positions: Claude Opus 4.5 #7 · Gemini 3 Pro unranked
Pick Gemini 3 Pro if you want the stronger benchmark profile. Claude Opus 4.5 only becomes the better choice if reasoning is the priority.
Reasoning
+33.3 difference
Multimodal
+10.4 difference
Claude Opus 4.5
Gemini 3 Pro
$null / $null
$null / $null
46 t/s
109 t/s
1.01s
32.65s
200K
2M
Pick Gemini 3 Pro if you want the stronger benchmark profile. Claude Opus 4.5 only becomes the better choice if reasoning is the priority.
Gemini 3 Pro has the cleaner provisional overall profile here, landing at 83 versus 80. 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 against 70.6. The single biggest benchmark swing on the page is MMMU-Pro, 70.6% to 81%. Claude Opus 4.5 does hit back in reasoning, so the answer changes if that is the part of the workload you care about most.
Gemini 3 Pro gives you the larger context window at 2M, compared with 200K for Claude Opus 4.5.
Gemini 3 Pro is ahead on BenchLM's provisional leaderboard, 83 to 80. The biggest single separator in this matchup is MMMU-Pro, where the scores are 70.6% and 81%.
Claude Opus 4.5 has the edge for reasoning in this comparison, averaging 64.4 versus 31.1. Gemini 3 Pro stays close enough that the answer can still flip depending on your workload.
Gemini 3 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 81 versus 70.6. Inside this category, ScreenSpot Pro is the benchmark that creates the most daylight between them.
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