Compare · ModelsLive · 2 picked · head to head
GLM 5 vs GLM 5.1
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GLM 5.1 wins on 6/9 benchmarks
GLM 5.1 wins 6 of 9 shared benchmarks. Leads in arena · language · math.
Category leads
arena·GLM 5.1coding·GLM 5reasoning·GLM 5language·GLM 5.1math·GLM 5.1knowledge·GLM 5.1
Hype vs Reality
Attention vs performance
GLM 5
#53 by perf·#27 by attention
GLM 5.1
#14 by perf·no signal
Best value
GLM 5
1.1x better value than GLM 5.1
GLM 5
38.1 pts/$
$1.51/M
GLM 5.1
34.2 pts/$
$2.05/M
Vendor risk
Who is behind the model
z-ai
private · undisclosed
z-ai
private · undisclosed
Head to head
9 benchmarks · 2 models
GLM 5GLM 5.1
Chatbot Arena Elo · Overall
GLM 5.1 leads by +11.9
GLM 5
1455.6
GLM 5.1
1467.4
LiveBench · Agentic Coding
GLM 5
55.0
GLM 5.1
55.0
LiveBench · Coding
GLM 5.1 leads by +1.7
GLM 5
73.6
GLM 5.1
75.4
LiveBench · Data Analysis
GLM 5 leads by +4.7
GLM 5
67.9
GLM 5.1
63.2
LiveBench · If
GLM 5.1 leads by +13.1
GLM 5
55.3
GLM 5.1
68.5
LiveBench · Language
GLM 5 leads by +5.8
GLM 5
77.5
GLM 5.1
71.8
LiveBench · Mathematics
GLM 5.1 leads by +1.4
GLM 5
83.5
GLM 5.1
84.9
LiveBench · Overall
GLM 5.1 leads by +1.3
GLM 5
68.8
GLM 5.1
70.2
LiveBench · Reasoning
GLM 5.1 leads by +3.4
GLM 5
69.1
GLM 5.1
72.5
Full benchmark table
| Benchmark | GLM 5 | GLM 5.1 |
|---|---|---|
Chatbot Arena Elo · Overall | 1455.6 | 1467.4 |
LiveBench · Agentic Coding | 55.0 | 55.0 |
LiveBench · Coding | 73.6 | 75.4 |
LiveBench · Data Analysis | 67.9 | 63.2 |
LiveBench · If | 55.3 | 68.5 |
LiveBench · Language | 77.5 | 71.8 |
LiveBench · Mathematics | 83.5 | 84.9 |
LiveBench · Overall | 68.8 | 70.2 |
LiveBench · Reasoning | 69.1 | 72.5 |
Pricing · per 1M tokens · projected $/mo at 10M tokens