xAI releases Grok 4.1 Fast model and Agent Tools API

PANews, November 20 news, xAI announced the launch of the next-generation model Grok 4.1 Fast, along with the release of the Agent Tools API. Grok 4.1 Fast features a 2 million token context window, optimized for practical applications such as customer support and in-depth research, supporting tool invocation, code execution, and web browsing. It has been trained in various environments through long reinforcement learning. The model is now available via the xAI API, priced at $0.2 per million tokens input and $0.5 per million tokens output, and will be available for free trial on the OpenRouter platform for the next two weeks.
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