Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.4 Pro
92
MiMo-V2.5-Pro
82
Pick GPT-5.4 Pro if you want the stronger benchmark profile. MiMo-V2.5-Pro only becomes the better choice if you want the cheaper token bill.
Agentic
+20.9 difference
Knowledge
+1.0 difference
GPT-5.4 Pro
MiMo-V2.5-Pro
$30 / $180
$1 / $3
74 t/s
N/A
151.79s
N/A
1.05M
1M
Pick GPT-5.4 Pro if you want the stronger benchmark profile. MiMo-V2.5-Pro only becomes the better choice if you want the cheaper token bill.
GPT-5.4 Pro is clearly ahead on the provisional aggregate, 92 to 82. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 Pro's sharpest advantage is in agentic, where it averages 89.3 against 68.4. The single biggest benchmark swing on the page is HLE, 58.7% to 48%.
GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $1.00 input / $3.00 output per 1M tokens for MiMo-V2.5-Pro. That is roughly 60.0x on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 1M for MiMo-V2.5-Pro.
GPT-5.4 Pro is ahead on BenchLM's provisional leaderboard, 92 to 82. The biggest single separator in this matchup is HLE, where the scores are 58.7% and 48%.
GPT-5.4 Pro has the edge for knowledge tasks in this comparison, averaging 49 versus 48. Inside this category, HLE is the benchmark that creates the most daylight between them.
GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 68.4. MiMo-V2.5-Pro stays close enough that the answer can still flip depending on your workload.
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