Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.4
89
MiMo-V2.5-Pro
86
Verified leaderboard positions: GPT-5.4 #16 · 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 its workflow or ecosystem matters more than the raw scoreboard.
Agentic
+8.6 difference
Coding
+0.5 difference
Knowledge
+18.1 difference
GPT-5.4
MiMo-V2.5-Pro
$2.5 / $15
$null / $null
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 its workflow or ecosystem matters more than the raw scoreboard.
GPT-5.4 has the cleaner provisional overall profile here, landing at 89 versus 86. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
GPT-5.4's sharpest advantage is in knowledge, where it averages 66.1 against 48. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 75.1% to 68.4%.
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, 89 to 86. 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 66.1 versus 48. Inside this category, AA-Omniscience Hallucination Rate 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, Terminal-Bench Hard 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, GDPval-AA is the benchmark that creates the most daylight between them.
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