GLM 5
GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows.
Specifications
| Lab | Z.ai |
|---|---|
| Context window | 204.8K tokens |
| Input price | $0.60/1M |
| Output price | $1.92/1M |
| Release | Feb 2026 |
Strengths
- Flagship open-source model rivaling closed-source leaders
- Advanced agentic planning and full-system construction
- Deep backend reasoning with iterative self-correction
- Production-grade on large-scale programming tasks
Weaknesses
- Newer ecosystem with fewer integrations than established models
- Agentic reliability not yet battle-tested at scale
- Limited brand recognition outside China
Best for
- Complex systems design and architecture
- Long-horizon autonomous agent workflows
- Large-scale programming and backend development
- Cost-effective alternative to closed-source flagships
In Depth: GLM 5
Summary
GLM 5 is an AI model from Z.ai.
Released in Feb 2026. It currently appears in the Overall category on LMRank and 1 other category. It takes text input and produces text output, with a context window of 204.8K tokens. Input pricing is $0.60 per 1M tokens and output is $1.92 per 1M tokens on OpenRouter.