Z.ai: GLM 5.2
GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering,...
Everything else
| Max output | 128K |
|---|---|
| Input / 1M | $0.621 |
| Output / 1M | $1.95 |
| Cache read / 1M | $0.115 |
| Cache write / 1M | — |
| 1M in + 1M out | $2.57 |
| Takes | text |
| Returns | text |
| Tools | yes |
| Reasoning | optional · xhigh, high |
| Open weights | yes |
| Released | 2026-06-16 |
| Knowledge cutoff | — |
| Retires | — |
| Catalog id | z-ai/glm-5.2 |
Benchmarks
| source | epoch |
|---|---|
| eci | 151.37 |
| confidence | Confident |
| accessibility | Open weights (unrestricted) |
| gpqa | 0.919 |
| gpqaStderr | 0.0161 |
| sweBenchVerified | 0.787 |
| sweBenchVerifiedStderr | 0.0187 |
| aime | 0.864 |
| aimeStderr | 0.0422 |
| simpleQA | 0.381 |
| simpleQAStderr | 0.0154 |
Benchmark scores by Epoch AI, CC BY 4.0.
Using it
In 00, this model is picked per agent — and per tier, so the model that answers your customers need not be the one that writes your code. Get 00.