X
Grok 4.1 Fast Reasoning
Grok 4.1 Fast Reasoning, a language model from X.ai.
modelOverride: { model: "grok-4.1-fast-reasoning" }
XX.ai·Released November 2025
Pricing
- Input
- $0.20 / 1M
- Output
- $0.50 / 1M
Specifications
- Context window
- 2,000,000 tokens
- Max output
- 2,000,000 tokens
- Released
- November 2025
- Model string
- grok-4-1-fast-reasoning
Use this model
await mindstudio.generateText({ message: "...", modelOverride: { model: "grok-4.1-fast-reasoning", }, });