GLM 5vsGPT-5
GLM 5 is cheaper than GPT-5 at $0.8/M vs $1.25/M input tokens.
| Spec | GLM 5 | GPT-5 |
|---|---|---|
| Input price | $0.8/M tokens | $1.25/M tokens |
| Output price | $2.56/M tokens | $10/M tokens |
| Context window | 203K tokens | 400K tokens |
| Weights | Open | Closed |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Aug 2025 |
| SWE-bench Verified | 77.8% | 74.9% |
Our Verdict
GLM 5
GPT-5
Not enough votes to call it. On the specs, nothing separates them.
GLM 5 costs 3.9x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GLM 5
Input
$0.80
1.6× cheaper
Output
$2.56
3.9× cheaper
GPT-5
Input
$1.25
Output
$10.00
GLM 5 is cheaper on both: 1.6× input, 3.9× output.
Where to run it
10 hosts, cheapest first
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
47%
GLM 5 uses 33.6x more bold
GLM 5
GPT-5
54%Vocabulary65%
17wSentence Length13w
0.37Hedging0.20
6.3Bold0.2
4.7Lists4.6
0.00Emoji0.00
0.60Headings0.16
0.18Transitions0.03
Based on 22 + 16 text responses
Research
What we learned reading every model
FAQ
