Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.4
93
MiMo-V2.5-Pro
82
Verified leaderboard positions: GPT-5.4 #4 · MiMo-V2.5-Pro unranked
Pick GPT-5.4 if you want the stronger benchmark profile. MiMo-V2.5-Pro only becomes the better choice if you want the cheaper token bill.
Agentic
+8.6 difference
Coding
+0.5 difference
Knowledge
+44.8 difference
GPT-5.4
MiMo-V2.5-Pro
$2.5 / $15
$1 / $3
74 t/s
N/A
151.79s
N/A
1.05M
1M
Pick GPT-5.4 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 is clearly ahead on the provisional aggregate, 93 to 82. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4's sharpest advantage is in knowledge, where it averages 92.8 against 48. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 75.1% to 68.4%.
GPT-5.4 is also the more expensive model on tokens at $2.50 input / $15.00 output per 1M tokens, versus $1.00 input / $3.00 output per 1M tokens for MiMo-V2.5-Pro. That is roughly 5.0x on output cost alone. GPT-5.4 gives you the larger context window at 1.05M, compared with 1M for MiMo-V2.5-Pro.
GPT-5.4 is ahead on BenchLM's provisional leaderboard, 93 to 82. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 75.1% and 68.4%.
GPT-5.4 has the edge for knowledge tasks in this comparison, averaging 92.8 versus 48. Inside this category, HLE w/o tools is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for coding in this comparison, averaging 57.7 versus 57.2. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for agentic tasks in this comparison, averaging 77 versus 68.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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