# Grok 4.1 Fast Reasoning detectado em Arena

Grok 4.1 Fast Reasoning é um modelo de xAI, lançado em 2025-11-19. Primeira detecção 2026-09-11. Os catálogos indicam contexto de 2.000.000 tokens. 14 links de referência.

- Tipo: Detecção
- Desenvolvedor: xAI
- Confirmação: Confirmado
- Primeira detecção: 2026-09-11T21:39:38.120Z
- Modelo: [Grok 4.1 Fast](https://alexgetman.com/pt/models/xai/grok-4-1-fast/)
- Canônico: https://alexgetman.com/pt/signals/2026/09/11/grok-4-1-fast-reasoning/

## Links de referência

- [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)