Grok Build 0.1 vs GLM 5.3 Flash
Grok Build 0.1 vs GLM 5.3 Flash: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- GLM 5.3 Flash is 5.3× cheaper than Grok Build 0.1 for the same mix of input and output tokens.
- GLM 5.3 Flash has the larger context window (1M), useful for long documents and big codebases.
- GLM 5.3 Flash is the more recent release (Aug 26, 2026).
- Only GLM 5.3 Flash has openly published weights you can run yourself.
- Choose GLM 5.3 Flash if cost matters most; choose Grok Build 0.1 if you need its specific strengths above. For the best results, test both on your own prompts.
| Grok Build 0.1 | GLM 5.3 Flash | |
|---|---|---|
| Company | xAI | Z.ai (Zhipu) |
| Released | May 20, 2026 | Aug 26, 2026 ● |
| Overall index | — | 151.9 |
| GPQA Diamond | — | 90.2% |
| AIME math | — | 93.9% |
| FrontierMath | — | 55.8% |
| Input (per 1M tokens) | $1 | $0.15 ● |
| Output (per 1M tokens) | $2 | $0.50 ● |
| Cost for 1M input + 1M output tokens | $3.00 | $0.65 ● |
| Providers | 4 | 33 ● |
| Context | 256K | 1M ● |
| Max output | 225K | 944K ● |
| Inputs | Text, Image, Files | Text, Image, Video |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | ✓ |