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| Attribute | vertex_ai/xai/grok-4.1-fast-reasoning |
|---|---|
| Provider | Vertex AI |
| Input $/1M | $0.200 |
| Output $/1M | $0.500 |
| Context Window | 128K |
| Max Output | 128K |
| Vision | Yes |
| Function Calling | Yes |
| Prompt Caching | Yes |
| Reasoning | Yes |
| Computer Use | No |
| Response Schema | Yes |
| PDF Input | No |
| Deprecated | No |
| Input cost | $0.000200 |
| Output cost | $0.000250 |
| Total cost | $0.000450 |