Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.5
80
Gemini 3 Pro Deep Think
86
Verified leaderboard positions: Claude Opus 4.5 #7 · Gemini 3 Pro Deep Think unranked
Pick Gemini 3 Pro Deep Think if you want the stronger benchmark profile. Claude Opus 4.5 only becomes the better choice if reasoning is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Reasoning
+19.3 difference
Claude Opus 4.5
Gemini 3 Pro Deep Think
$null / $null
$null / $null
46 t/s
N/A
1.01s
N/A
200K
2M
Pick Gemini 3 Pro Deep Think if you want the stronger benchmark profile. Claude Opus 4.5 only becomes the better choice if reasoning is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Gemini 3 Pro Deep Think is clearly ahead on the provisional aggregate, 86 to 80. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3 Pro Deep Think is the reasoning model in the pair, while Claude Opus 4.5 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 Deep Think gives you the larger context window at 2M, compared with 200K for Claude Opus 4.5.
Gemini 3 Pro Deep Think is ahead on BenchLM's provisional leaderboard, 86 to 80.
Claude Opus 4.5 has the edge for reasoning in this comparison, averaging 64.4 versus 45.1. Gemini 3 Pro Deep Think stays close enough that the answer can still flip depending on your workload.
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