xAI model
Grok 4 Fast Non Reasoning
Grok 4 Fast Non Reasoning is a xAI model tracked in Sim. It supports a 2M token context window. Pricing starts at $0.2/1M input tokens and $0.5/1M output tokens. Key capabilities include Temperature 0-1, Tool choice, Structured outputs. Best for long-context retrieval, large documents, and high-memory workflows.
Input price$0.2/1M
Cached input$0.05/1M
Output price$0.5/1M
Context window2M
Max outputNot published
ProviderxAI
UpdatedApr 1, 2026
Best forBest for long-context retrieval, large documents, and high-memory workflows.
Temperature0 to 1
Reasoning effortNot supported
VerbosityNot supported
Thinking levelsNot supported
Structured outputsSupported
Tool choiceSupported
Computer useNot supported
Deep researchNot supported
Memory supportSupported
Max output tokensNot published
Frequently asked questions
Grok 4 Fast Non Reasoning is a xAI model available in Sim. Grok 4 Fast Non Reasoning is a xAI model tracked in Sim. It supports a 2M token context window. Pricing starts at $0.2/1M input tokens and $0.5/1M output tokens. Key capabilities include Temperature 0-1, Tool choice, Structured outputs.