xAI
X-Ai/Grok-4-Fast-Non-Reasoning
Fast Grok model for responsive chat, reasoning, and tool-assisted work
xai/grok-4-fast-non-reasoning
Context
2M
Output
2M
Released
2025-12-18
Knowledge cutoff
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Types
InputTextImageAudioVideo
OutputText
Reasoning
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Tool use
Supported
Structured output
—
Attachments
Supported
Open weights
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