xAI has launched the Grok 4.1 Fast model, boasting a 2-million-token context window that can handle extensive documents, logs, or databases without losing context. Priced at $0.20 per million input tokens and $0.50 per million output tokens, the model is designed for cost-efficient tasks and in-depth research. While praised for its speed and tool-use performance, it may not be ideal for intensive coding tasks.