Z.ai: GLM 5.1 vs GLM 5.2
Side-by-side comparison. Updated 2026-07-11.
Summary
Compare Z.ai: GLM 5.1 and GLM 5.2 across pricing, context window, modalities, strengths, weaknesses, and best-fit workloads.
Use the details below to weigh cost, context, modalities, and workload fit.
At a Glance
| Attribute | Z.ai: GLM 5.1 | GLM 5.2 |
|---|---|---|
| Provider | Z Ai | Z Ai |
| Tags | Intelligent Coding Agentic | Intelligent Coding Agentic Long Context |
| Context | 202,752 tokens | 1,048,576 tokens |
| Input price | $0.98/1M | $1.40/1M |
| Output price | $3.08/1M | $4.40/1M |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
Z.ai: GLM 5.1 Strengths
- Top-tier coding and long-horizon task completion
- Strong agentic reasoning for multi-step workflows
- Configurable reasoning depth for cost/quality tradeoffs
- Excellent instruction following on complex tasks
GLM 5.2 Strengths
- 99.2 on AIME 2026 (vendor-reported)
- 91.2 on GPQA-Diamond (vendor-reported)
- 62.1 on SWE-bench Pro (vendor-reported)
- ~1024K token context window
- Open-weight MIT license