Auto Router vs xAI: Grok 4 Fast
Side-by-side comparison based on OpenRouter API data.
Key Differences
- •Auto Router is -0.0x cheaper than xAI: Grok 4 Fast for input tokens
| Spec | Auto Router | xAI: Grok 4 Fast |
|---|---|---|
| Provider | OpenRouter | xAI |
| Context Length | 2M | 2M |
| Max Output | N/A | 30K |
| Input Price/1M | <$0.01 | $0.20 |
| Output Price/1M | <$0.01 | $0.50 |
| Cache Read/1M | Free | $0.05 |
| Cache Write/1M | Free | Free |
| Input Modalities | Text + Image + Audio + File + Video | Text + Image |
| Output Modalities | Text + Image | Text |
| Tokenizer | Router | Grok |
| Moderated | No | No |