Model Comparator
Compare up to four models using the same criteria.
2 models compared
- GLM-4.5-Air
Z.AI
- Grok 4 Fast (Non-reasoning)
SpaceXSI
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | GLM-4.5-Air Z.AI | Grok 4 Fast (Non-reasoning) SpaceXSI | Add a model · 2/4 |
|---|---|---|---|
| Intelligence | 11.1 | 11.1 | |
| Math | Best: 80.7 | 41.3 | |
| Speed | 73.7 t/s | — | |
| TTFT | 2.42 s | — | |
| Input · $ / 1M tokens | Best: $0.17 | $0.20×1.2 relative to the lowest price among the compared models | |
| Output · $ / 1M tokens | $0.98×2 relative to the lowest price among the compared models | Best: $0.50 | |
| Context window | 128K | Best: 2M | |
| Reasoning | Yes | No | |
| Open weights | Yes | No |
Intelligence
- GLM-4.5-Air
- 11.1
- Grok 4 Fast (Non-reasoning)
- 11.1
Math
- GLM-4.5-Air
- Best: 80.7
- Grok 4 Fast (Non-reasoning)
- 41.3
Speed
- GLM-4.5-Air
- 73.7 t/s
- Grok 4 Fast (Non-reasoning)
- —
TTFT
- GLM-4.5-Air
- 2.42 s
- Grok 4 Fast (Non-reasoning)
- —
Input · $ / 1M tokens
- GLM-4.5-Air
- Best: $0.17
- Grok 4 Fast (Non-reasoning)
- $0.20×1.2 relative to the lowest price among the compared models
Output · $ / 1M tokens
- GLM-4.5-Air
- $0.98×2 relative to the lowest price among the compared models
- Grok 4 Fast (Non-reasoning)
- Best: $0.50
Context window
- GLM-4.5-Air
- 128K
- Grok 4 Fast (Non-reasoning)
- Best: 2M
Reasoning
- GLM-4.5-Air
- Yes
- Grok 4 Fast (Non-reasoning)
- No
Open weights
- GLM-4.5-Air
- Yes
- Grok 4 Fast (Non-reasoning)
- No
Each reasoning level remains a separate configuration.
Score and cost
Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.
- GLM-4.5-Air11.1 · $0.372
- Grok 4 Fast (Non-reasoning)11.1 · $0.275