Compare · ModelsLive · 2 picked · head to head
GLM 5.1 vs GPT-5.2-Codex
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.2-Codex wins on 6/8 benchmarks
GPT-5.2-Codex wins 6 of 8 shared benchmarks. Leads in reasoning · math · knowledge.
Category leads
coding·GLM 5.1reasoning·GPT-5.2-Codexlanguage·GLM 5.1math·GPT-5.2-Codexknowledge·GPT-5.2-Codex
Hype vs Reality
Attention vs performance
GLM 5.1
#14 by perf·no signal
GPT-5.2-Codex
#13 by perf·no signal
Best value
GLM 5.1
3.8x better value than GPT-5.2-Codex
GLM 5.1
34.2 pts/$
$2.05/M
GPT-5.2-Codex
9.0 pts/$
$7.88/M
Vendor risk
Who is behind the model
z-ai
private · undisclosed
OpenAI
$840.0B·Tier 1
Head to head
8 benchmarks · 2 models
GLM 5.1GPT-5.2-Codex
LiveBench · Agentic Coding
GLM 5.1 leads by +3.3
GLM 5.1
55.0
GPT-5.2-Codex
51.7
LiveBench · Coding
GPT-5.2-Codex leads by +8.3
GLM 5.1
75.4
GPT-5.2-Codex
83.6
LiveBench · Data Analysis
GPT-5.2-Codex leads by +15.0
GLM 5.1
63.2
GPT-5.2-Codex
78.2
LiveBench · If
GLM 5.1 leads by +2.0
GLM 5.1
68.5
GPT-5.2-Codex
66.5
LiveBench · Language
GPT-5.2-Codex leads by +1.9
GLM 5.1
71.8
GPT-5.2-Codex
73.7
LiveBench · Mathematics
GPT-5.2-Codex leads by +3.9
GLM 5.1
84.9
GPT-5.2-Codex
88.8
LiveBench · Overall
GPT-5.2-Codex leads by +4.1
GLM 5.1
70.2
GPT-5.2-Codex
74.3
LiveBench · Reasoning
GPT-5.2-Codex leads by +5.2
GLM 5.1
72.5
GPT-5.2-Codex
77.7
Full benchmark table
| Benchmark | GLM 5.1 | GPT-5.2-Codex |
|---|---|---|
LiveBench · Agentic Coding | 55.0 | 51.7 |
LiveBench · Coding | 75.4 | 83.6 |
LiveBench · Data Analysis | 63.2 | 78.2 |
LiveBench · If | 68.5 | 66.5 |
LiveBench · Language | 71.8 | 73.7 |
LiveBench · Mathematics | 84.9 | 88.8 |
LiveBench · Overall | 70.2 | 74.3 |
LiveBench · Reasoning | 72.5 | 77.7 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GLM 5.1 | $0.95 | $3.15 | 203K tokens (~101 books) | $15.00 |
| GPT-5.2-Codex | $1.75 | $14.00 | 400K tokens (~200 books) | $48.13 |