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Grok 4.20 (Reasoning)
xai/grok-4.20-0309-reasoning
xAI / Grok
Reasoning Grok for document-heavy analysis and long-horizon tool use
Released
2026-03-09
Context window
1M
Max output
30K
Weights
Closed
Modalities
TextInputImageInputDocumentInputTextOutput
Capabilities
AttachmentsReasoningTool callStructuredTemperature
Providers
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