Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GLM-5.1
83
o1
57
Verified leaderboard positions: GLM-5.1 #21 · o1 unranked
Pick GLM-5.1 if you want the stronger benchmark profile. o1 only becomes the better choice if knowledge is the priority.
Knowledge
+23.4 difference
GLM-5.1
o1
$1.4 / $4.4
$15 / $60
N/A
98 t/s
N/A
32.29s
203K
200K
Pick GLM-5.1 if you want the stronger benchmark profile. o1 only becomes the better choice if knowledge is the priority.
GLM-5.1 is clearly ahead on the provisional aggregate, 83 to 57. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o1 is also the more expensive model on tokens at $15.00 input / $60.00 output per 1M tokens, versus $1.40 input / $4.40 output per 1M tokens for GLM-5.1. That is roughly 13.6x on output cost alone. GLM-5.1 gives you the larger context window at 203K, compared with 200K for o1.
GLM-5.1 is ahead on BenchLM's provisional leaderboard, 83 to 57.
o1 has the edge for knowledge tasks in this comparison, averaging 75.7 versus 52.3. GLM-5.1 stays close enough that the answer can still flip depending on your workload.
Estimates at 50,000 req/day · 1000 tokens/req average.
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