Grok 4.1 Fast
Proprietary
About
Ultra-low latency variant of Grok 4.1 for real-time and high-throughput applications. Reasons automatically; does not support the reasoning.effort parameter (returns error if specified). Text-only. Context window is 1,048,576 tokens. API ID: grok-4-1-fast.
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
Providers(2)
Compare all →| Provider | Input (per 1M) | Output (per 1M) | Type | |
|---|---|---|---|---|
| OpenRouter | $0.2 | $0.5 | Serverless | |
| xAI Console | $1.0 | $4.0 | Serverless |
