Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.4 Pro
91
MiMo-V2.5-Pro
86
Pick GPT-5.4 Pro 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
+20.9 difference
Knowledge
+1.0 difference
GPT-5.4 Pro
MiMo-V2.5-Pro
$30 / $180
$null / $null
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 its workflow or ecosystem matters more than the raw scoreboard.
GPT-5.4 Pro is clearly ahead on the provisional aggregate, 91 to 86. 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 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, 91 to 86. 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.
For engineers, researchers, and the plain curious — a weekly brief on new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.