Compare · ModelsLive · 3 picked · head to head
GPT-5.1-Codex-Max vs GLM 5 vs GLM 5.1
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.1-Codex-Max wins on 4/9 benchmarks
GPT-5.1-Codex-Max wins 4 of 9 shared benchmarks. Leads in coding · knowledge.
Category leads
coding·GPT-5.1-Codex-Maxreasoning·GLM 5language·GLM 5.1math·GLM 5.1knowledge·GPT-5.1-Codex-Maxarena·GLM 5.1
Hype vs Reality
Attention vs performance
GPT-5.1-Codex-Max
#12 by perf·no signal
GLM 5
#55 by perf·#27 by attention
GLM 5.1
#16 by perf·no signal
Best value
GLM 5
1.5x better value than GLM 5.1
GPT-5.1-Codex-Max
12.8 pts/$
$5.63/M
GLM 5
45.7 pts/$
$1.26/M
GLM 5.1
30.9 pts/$
$2.27/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
z-ai
private · undisclosed
z-ai
private · undisclosed
Head to head
9 benchmarks · 3 models
GPT-5.1-Codex-MaxGLM 5GLM 5.1
LiveBench · Agentic Coding
GPT-5.1-Codex-Max leads by +1.7
GPT-5.1-Codex-Max
56.7
GLM 5
55.0
GLM 5.1
55.0
LiveBench · Coding
GPT-5.1-Codex-Max leads by +6.0
GPT-5.1-Codex-Max
81.4
GLM 5
73.6
GLM 5.1
75.4
LiveBench · Data Analysis
GLM 5 leads by +4.7
GPT-5.1-Codex-Max
54.9
GLM 5
67.9
GLM 5.1
63.2
LiveBench · If
GLM 5.1 leads by +1.3
GPT-5.1-Codex-Max
67.1
GLM 5
55.3
GLM 5.1
68.5
LiveBench · Language
GLM 5 leads by +2.1
GPT-5.1-Codex-Max
75.4
GLM 5
77.5
GLM 5.1
71.8
LiveBench · Mathematics
GLM 5.1 leads by +1.2
GPT-5.1-Codex-Max
83.7
GLM 5
83.5
GLM 5.1
84.9
LiveBench · Overall
GPT-5.1-Codex-Max leads by +1.8
GPT-5.1-Codex-Max
72.0
GLM 5
68.8
GLM 5.1
70.2
LiveBench · Reasoning
GPT-5.1-Codex-Max leads by +12.0
GPT-5.1-Codex-Max
84.6
GLM 5
69.1
GLM 5.1
72.5
Chatbot Arena Elo · Overall
GLM 5.1 leads by +11.9
GLM 5
1455.6
GLM 5.1
1467.4
Full benchmark table
| Benchmark | GPT-5.1-Codex-Max | GLM 5 | GLM 5.1 |
|---|---|---|---|
LiveBench · Agentic Coding | 56.7 | 55.0 | 55.0 |
LiveBench · Coding | 81.4 | 73.6 | 75.4 |
LiveBench · Data Analysis | 54.9 | 67.9 | 63.2 |
LiveBench · If | 67.1 | 55.3 | 68.5 |
LiveBench · Language | 75.4 | 77.5 | 71.8 |
LiveBench · Mathematics | 83.7 | 83.5 | 84.9 |
LiveBench · Overall | 72.0 | 68.8 | 70.2 |
LiveBench · Reasoning | 84.6 | 69.1 | 72.5 |
Chatbot Arena Elo · Overall | — | 1455.6 | 1467.4 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 | |
| $0.60 | $1.92 | 203K tokens (~101 books) | $9.30 | |
| $1.05 | $3.50 | 203K tokens (~101 books) | $16.63 |