A detailed side-by-side comparison of Grok and GLM — capabilities, strengths, and which AI is best for your needs.
Grok by xAI and GLM by Z.ai are among the leading AI models available today. While both are powerful, they take different approaches and excel in different areas.
Grok is built around Real-time knowledge access, while GLM focuses on Top-tier coding and agentic abilities. Below we compare them across key capabilities to help you choose the right one for your tasks.
| Feature | ● Grok | ● GLM |
|---|---|---|
| Provider | xAI | Z.ai |
| Latest Model | Grok 4 | GLM 5 |
| Release Year | 2026 | 2026 |
| Context Window | 500K tokens | 1M tokens |
| Pricing | Free / X Premium $16/mo | Free / API pay-per-use |
| Open Source | No | Yes |
| Multimodal | Yes | Yes |
| Web Access | Yes | Yes |
| API Available | Yes | Yes |
| Thinking Mode | Yes | Yes |
| Image Generation | Yes | No |
| Code Execution | No | No |
| File Upload | Yes | Yes |
| Voice Mode | No | No |
Both Grok and GLM are excellent AI assistants, but they serve different needs. The best choice depends on your specific use case.
The good news? You can try both for free right here on ChatAI.org and decide for yourself which one works best for you.
It depends on your needs. Grok excels at Real-time information, Direct answers, while GLM is stronger at Coding, Agentic tasks. Both are top-tier AI models.
Yes, both Grok and GLM are available for free on chatai.org. No registration required.
GLM has a slight edge in coding tasks, but both models handle code generation, debugging, and explanation very well.
GLM has a larger context window (1M), compared to Grok's 500K. This matters for long documents.
Grok generally responds faster, though both models deliver quick responses for most tasks.
No. Grok is made by xAI and GLM is made by Z.ai. They use different architectures and have different strengths.