Model Comparator
Compare up to four models using the same criteria.
2 models compared
- Grok 4 Fast (Non-reasoning)
SpaceXSI
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | Grok 4 Fast (Non-reasoning) SpaceXSI | Add a model · 2/4 | |
|---|---|---|---|
| Intelligence | 11.1 | 11.1 | |
| Math | — | 41.3 | |
| Speed | 183 t/s | — | |
| TTFT | 0.67 s | — | |
| Input · $ / 1M tokens | $0.75×3.8 relative to the lowest price among the compared models | Best: $0.20 | |
| Output · $ / 1M tokens | $4.50×9 relative to the lowest price among the compared models | Best: $0.50 | |
| Context window | 400K | Best: 2M | |
| Reasoning | No | No | |
| Open weights | No | No |
Intelligence
- GPT-5.4 mini (Non-reasoning)
- 11.1
- Grok 4 Fast (Non-reasoning)
- 11.1
Math
- GPT-5.4 mini (Non-reasoning)
- —
- Grok 4 Fast (Non-reasoning)
- 41.3
Speed
- GPT-5.4 mini (Non-reasoning)
- 183 t/s
- Grok 4 Fast (Non-reasoning)
- —
TTFT
- GPT-5.4 mini (Non-reasoning)
- 0.67 s
- Grok 4 Fast (Non-reasoning)
- —
Input · $ / 1M tokens
- GPT-5.4 mini (Non-reasoning)
- $0.75×3.8 relative to the lowest price among the compared models
- Grok 4 Fast (Non-reasoning)
- Best: $0.20
Output · $ / 1M tokens
- GPT-5.4 mini (Non-reasoning)
- $4.50×9 relative to the lowest price among the compared models
- Grok 4 Fast (Non-reasoning)
- Best: $0.50
Context window
- GPT-5.4 mini (Non-reasoning)
- 400K
- Grok 4 Fast (Non-reasoning)
- Best: 2M
Reasoning
- GPT-5.4 mini (Non-reasoning)
- No
- Grok 4 Fast (Non-reasoning)
- No
Open weights
- GPT-5.4 mini (Non-reasoning)
- No
- 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.
- GPT-5.4 mini (Non-reasoning)11.1 · $1.69
- Grok 4 Fast (Non-reasoning)11.1 · $0.275