GLM-4.5 vs Grok 4.20 0309 v2
Zhipu AI vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 73)
- •GLM-4.5 is cheaper ($0.60 vs $2.00 per 1M input)
- •Grok 4.20 0309 v2 is faster
| GLM-4.5 | Grok 4.20 0309 v2 | |
|---|---|---|
| Intelligence index | 73 | 91.1 |
| Developer | Zhipu AI | xAI |
| Type | LLM | LLM |
| Access | Open weights | — |
| Context window | 131,072 tokens | — |
| Input price | $0.60 / 1M | $2.00 / 1M |
| Output price | $2.20 / 1M | $6.00 / 1M |
| Speed | 85 tok/s | 105 tok/s |
| Released | July 28, 2025 | April 7, 2026 |
| Parameters | 355B (32B active) | — |
| Input modalities | Text | — |
| Output modalities | Text | — |
Shared benchmarks
GLM-4.5
Grok 4.20 0309 v2
GPQA Diamond
79.1
91.1
Humanity’s Last Exam
14.4
32.2