Model Comparator
Compare up to four models using the same criteria.
2 models compared
- Grok 4 Fast (Non-reasoning)
SpaceXSI
- GLM-4.5-Air
Z.AI
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | Grok 4 Fast (Non-reasoning) SpaceXSI | GLM-4.5-Air Z.AI | Add a model · 2/4 |
|---|---|---|---|
| Intelligence | 11.1 | 11.1 | |
| Math | 41.3 | Best: 80.7 | |
| Speed | — | 74.7 t/s | |
| TTFT | — | 2.39 s | |
| Input · $ / 1M tokens | $0.20×1.2 relative to the lowest price among the compared models | Best: $0.17 | |
| Output · $ / 1M tokens | Best: $0.50 | $0.98×2 relative to the lowest price among the compared models | |
| Context window | Best: 2M | 128K | |
| Reasoning | No | Yes | |
| Open weights | No | Yes |
Intelligence
- Grok 4 Fast (Non-reasoning)
- 11.1
- GLM-4.5-Air
- 11.1
Math
- Grok 4 Fast (Non-reasoning)
- 41.3
- GLM-4.5-Air
- Best: 80.7
Speed
- Grok 4 Fast (Non-reasoning)
- —
- GLM-4.5-Air
- 74.7 t/s
TTFT
- Grok 4 Fast (Non-reasoning)
- —
- GLM-4.5-Air
- 2.39 s
Input · $ / 1M tokens
- Grok 4 Fast (Non-reasoning)
- $0.20×1.2 relative to the lowest price among the compared models
- GLM-4.5-Air
- Best: $0.17
Output · $ / 1M tokens
- Grok 4 Fast (Non-reasoning)
- Best: $0.50
- GLM-4.5-Air
- $0.98×2 relative to the lowest price among the compared models
Context window
- Grok 4 Fast (Non-reasoning)
- Best: 2M
- GLM-4.5-Air
- 128K
Reasoning
- Grok 4 Fast (Non-reasoning)
- No
- GLM-4.5-Air
- Yes
Open weights
- Grok 4 Fast (Non-reasoning)
- No
- GLM-4.5-Air
- Yes
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.
- Grok 4 Fast (Non-reasoning)11.1 · $0.275
- GLM-4.5-Air11.1 · $0.372