Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GLM-5.2
94
o3-mini
55
Verified leaderboard positions: GLM-5.2 #9 · o3-mini unranked
Pick GLM-5.2 if you want the stronger benchmark profile. o3-mini only becomes the better choice if knowledge is the priority.
Coding
+12.8 difference
Knowledge
+10.0 difference
GLM-5.2
o3-mini
$1.4 / $4.4
$1.1 / $4.4
N/A
160 t/s
N/A
7.12s
1M
200K
Pick GLM-5.2 if you want the stronger benchmark profile. o3-mini only becomes the better choice if knowledge is the priority.
GLM-5.2 is clearly ahead on the provisional aggregate, 94 to 55. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GLM-5.2's sharpest advantage is in coding, where it averages 62.1 against 49.3. The single biggest benchmark swing on the page is GPQA, 91.2% to 77.2%. o3-mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
GLM-5.2 gives you the larger context window at 1M, compared with 200K for o3-mini.
GLM-5.2 is ahead on BenchLM's provisional leaderboard, 94 to 55. The biggest single separator in this matchup is GPQA, where the scores are 91.2% and 77.2%.
o3-mini has the edge for knowledge tasks in this comparison, averaging 77.2 versus 67.2. Inside this category, GPQA is the benchmark that creates the most daylight between them.
GLM-5.2 has the edge for coding in this comparison, averaging 62.1 versus 49.3. o3-mini stays close enough that the answer can still flip depending on your workload.
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