# Grok 4.1 Fast timeline

entity: /record/grok-4-1-fast.md  
id: ent_grok-4-1-fast  


## 2025

- 2025-11-19 | context_window | 2M | valid | [clm_774F5FAF9451](/claim/clm_774F5FAF9451.md)
- 2025-11-19 | model_release | Grok 4.1 Fast | valid | [clm_13B91C07A63A](/claim/clm_13B91C07A63A.md)

## 2026

- 2026-05-15 | retired | grok-4-1-fast-reasoning | valid | [clm_53450A803B87](/claim/clm_53450A803B87.md)

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.