Model comparison · text
GLM-5.1 vs GLM-5.2
Symmetrical, primary-source facts with unknown values left visible. No winner is assigned without comparable measurements.
Technical differences
Side-by-side facts
| Field | GLM-5.1 | GLM-5.2 |
|---|---|---|
| Developer | Z.ai | Z.ai |
| Family | Glm 5 1 | Glm 5 2 |
| Model | GLM-5.1 | GLM-5.2 |
| Version | GLM-5.1 | GLM-5.2 |
| Lifecycle | active | active |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
| Context window | 202752 | 1048576 |
| Total parameters | 753864139008 | 753329940480 |
| Active parameters | Unknown | Unknown |
| License | mit | mit |
| Open weights | Yes | Yes |
| API available | Yes | Yes |
| Self-hostable | Yes | Yes |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, tools |
14 comparable fields · 5 material differences · Pair passes the primary-source comparison gate
Primary benchmark evidence
Comparable performance
No protocol-matched benchmark yet.Results appear here only when both models share the same benchmark version, metric, evaluation protocol, and evidence class.
GLM-5.1 capabilities
Input price$1.26
Output price$3.96
Serving providers1
Canonical IDzai-org/GLM-5.1
GLM-5.2 capabilities
Input price$1.19
Output price$3.74
Serving providers1
Canonical IDzai-org/GLM-5.2
Internal comparison graph
Related comparisons
Primary evidence