# Grok 4.1 Fast

Grok 4.1 Fast は xAI のAIモデルです。リリース日：2025-11-19。

- 開発元: xAI
- Id: grok-4.1-fast
- 報道段階: 2025-11-19T00:00:00.000Z
- リリース済み: 2025-11-19T00:00:00.000Z
- 発見: 2026-09-19T17:20:46.653Z
  - [参照リンク](https://models.dev/#grok-4.1-fast)
- 状態: リリース済み
- APIでの提供: 2025-11-19
  - [参照リンク](https://docs.x.ai/developers/release-notes#grok-41-fast-is-available-in-enterprise-api)
- 正規URL: https://alexgetman.com/ja/models/xai/grok-4-1-fast/

## よくある質問

### Grok 4.1 Fast のリリース日は？

2025-11-19。

## 時系列

- 2026-10-07T19:38:07.564Z · [xAI · release notes](https://docs.x.ai/developers/release-notes#grok-41-fast-is-available-in-enterprise-api)
> You can now use Grok 4.1 Fast in the xAI Enterprise API

## 参照リンク

- [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)
- [xai-release-notes](https://docs.x.ai/developers/release-notes#grok-41-fast-is-available-in-enterprise-api)
- [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)
- [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-non-reasoning)
- [models.dev · catalogue](https://models.dev/#grok-4-1-fast-reasoning)
- [models-dev](https://models.dev/#grok-4.1-fast)
- [models.dev · catalogue](https://models.dev/#grok-4.1-fast-non-reasoning)
- [models.dev · catalogue](https://models.dev/#grok-4.1-fast-reasoning)
- [OpenCode · discovery](https://opencode.ai/data/xai/grok-4-1-fast)
- [OpenCode · discovery](https://opencode.ai/data/xai/grok-4-1-fast-reasoning)
- [Arena · leaderboards](https://x.ai/news/grok-4-1-fast)

## シグナル

- [Arena で Grok 4.1 Fast Reasoning を発見](https://alexgetman.com/ja/signals/2026/09/11/grok-4-1-fast-reasoning/)