xAI: Grok 4 Fast Reasoning
xai/grok-4-fast-reasoningCreated N/A|200K context context|Starting at $0.2/M input tokens|Starting at $0.5/M output tokens
[Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. Learn more in our docs]
Providers for Grok 4 Fast Reasoning
Routes requests to the best providers that are able to handle your prompt size and parameters.
| Provider | Context Window | Max Output | Input Price | Output Price | Cache Read | Cache Write |
|---|---|---|---|---|---|---|
X.AI | 200K | N/A | $0.2 | $0.5 | $0 | $0.05 |