Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GLM-4.5
--
GLM-5.1
83
Verified leaderboard positions: GLM-4.5 unranked · GLM-5.1 #21
Benchmark data for GLM-4.5 and GLM-5.1 is coming soon on BenchLM.
GLM-4.5
GLM-5.1
$0.6 / $2.2
$1.4 / $4.4
51 t/s
N/A
1.45s
N/A
128K
203K
Benchmark data for GLM-4.5 and GLM-5.1 is coming soon on BenchLM.
BenchLM does not have sourced benchmark coverage for GLM-4.5 yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
GLM-5.1 is priced at $1.40 input / $4.40 output per 1M tokens, versus $0.60 input / $2.20 output per 1M tokens for GLM-4.5. GLM-5.1 has the larger context window at 203K, compared with 128K for GLM-4.5.
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
GLM-4.5: $0.60 input / $2.20 output per 1M tokens GLM-5.1: $1.40 input / $4.40 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
Estimates at 50,000 req/day · 1000 tokens/req average.
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