# 在 Arena 發現 Grok 4.1 Fast Reasoning

Grok 4.1 Fast Reasoning 是 xAI 的 AI 模型，於 2025-11-19 發布。 首次發現 2026-09-11。 目錄顯示上下文視窗為 2,000,000 token。 14個參考連結。

- 類型: 發現
- 開發商: xAI
- 確認程度: 已確認
- 首次發現: 2026-09-11T21:39:38.120Z
- 模型: [Grok 4.1 Fast](https://alexgetman.com/zh-Hant/models/xai/grok-4-1-fast/)
- 標準網址: https://alexgetman.com/zh-Hant/signals/2026/09/11/grok-4-1-fast-reasoning/

## 參考連結

- [Arena · leaderboards](https://x.ai/news/grok-4-1-fast)
- [models.dev · catalogue](https://models.dev/#grok-4.1-fast)
- [models.dev · catalogue](https://models.dev/#grok-4.1-fast-non-reasoning)
- [TrueFoundry · Azure catalogue](https://github.com/truefoundry/models/blob/main/providers/azure-ai-foundry/grok-4-1-fast-reasoning.yaml)
- [TrueFoundry · Azure catalogue](https://github.com/truefoundry/models/blob/main/providers/microsoft-foundry/grok-4-1-fast-reasoning.yaml)
- [OpenCode · discovery](https://opencode.ai/data/xai/grok-4-1-fast-reasoning)
- [OpenCode · discovery](https://opencode.ai/data/xai/grok-4-1-fast)
- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [Vertex AI · Model Garden](https://console.cloud.google.com/vertex-ai/publishers/xai/model-garden/grok-4.1-fast-non-reasoning)
- [Vertex AI · Model Garden](https://console.cloud.google.com/vertex-ai/publishers/xai/model-garden/grok-4.1-fast-reasoning)
- [models.dev · catalogue](https://models.dev/#grok-4-1-fast-non-reasoning)
- [models.dev · catalogue](https://models.dev/#grok-4-1-fast-reasoning)
- [Azure Foundry · lifecycle](https://learn.microsoft.com/en-us/azure/foundry/concepts/model-lifecycle-retirement?view=azureml-api-2)
- [models.dev · catalogue](https://models.dev/#grok-4.1-fast-reasoning)