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ModelDeprecatedProprietaryfamily · Grok

grok-4.20-0309-non-reasoning

xAIdocs.x.ai/developers/models/grok-4.20-0309-non-r

Grok 4.20 is a high-performance model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherence, delivering consistently precise and truthful responses.

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Updated 4 h ago · first seen 11 Sept 2026

model_01M299WBFFVB1CJG1KQZ98Q8E0

Context
1M tokens
T1 · 4 h ago

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

18 claims · 17 properties1 conflicting

Familyfamily1

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ValueValid from → toStatusSourceConfidenceExtractor
GrokcurrentcurrentxAI — docsT1highdeterministic

Statusstatus1

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deprecatedcurrentcurrentArtificial AnalysisT2mediumdeterministic

Opennessopenness1

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proprietarycurrentcurrentArtificial AnalysisT2mediumdeterministic

Context windowcontext_length2conflicting claims

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2M tokenscurrentconflictingArtificial AnalysisT2mediumdeterministic
1M tokenscurrentcurrentxAI — docsT1conflicteddeterministic

Modalitiesmodalities1

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image, textcurrentcurrentxAI — docsT1highdeterministic

Input modalitiesmodalities_input1

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text, imagecurrentcurrentxAI — docsT1highdeterministic

Output modalitiesmodalities_output1

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textcurrentcurrentxAI — docsT1highdeterministic

API model idapi_model_id1

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grok-4.20-0309-non-reasoningcurrentcurrentxAI — docsT1highdeterministic

Official pageofficial_url1

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https://docs.x.ai/developers/models/grok-4.20-0309-non-reasoningcurrentcurrentxAI — docsT1highdeterministic

Batch apibatch_api1

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YescurrentcurrentxAI — docsT1highdeterministic

Descriptiondescription1

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Grok 4.20 is a high-performance model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherence, delivering consistently precise and truthful responses.currentcurrentxAI — docsT1highdeterministic

Aa median output tokens per secondmetric.aa_median_output_tokens_per_second1

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94.3currentcurrentArtificial AnalysisT2mediumdeterministic

Reasoningreasoning1

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NocurrentcurrentxAI — docsT1highdeterministic

Regionsregions1

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us-east-1, us-west-2currentcurrentxAI — docsT1highdeterministic

Structured outputstructured_output1

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YescurrentcurrentxAI — docsT1highdeterministic

Tool callingtool_calling1

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YescurrentcurrentxAI — docsT1highdeterministic

Visionvision1

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YescurrentcurrentxAI — docsT1highdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →