PANews 11月20日消息，xAI宣布推出新一代模型Grok 4.1 Fast，并同步上线Agent Tools API。Grok 4.1 Fast具备200万token上下文窗口，针对客户支持与深度研究等实际应用优化，支持工具调用、代码执行、网页浏览等功能，已在多领域环境中通过长程强化学习训练。该模型现已通过xAI API开放，定价为每百万token输入$0.2、输出$0.5，并在未来两周于OpenRouter平台免费试用。

<p>PANews 11月20日消息，xAI宣布推出新一代模型Grok 4.1 Fast，并同步上线Agent Tools API。Grok 4.1 Fast具备200万token上下文窗口，针对客户支持与深度研究等实际应用优化，支持工具调用、代码执行、网页浏览等功能，已在多领域环境中通过长程强化学习训练。该模型现已通过xAI API开放，定价为每百万token输入$0.2、输出$0.5，并在未来两周于OpenRouter平台免费试用。</p>

xAI发布Grok 4.1 Fast模型及Agent Tools API

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

<p>PANews reported on November 20th that xAI announced the release of its next-generation model, Grok 4.1 Fast, along with the simultaneous launch of its Agent Tools API. Grok 4.1 Fast features a 2 million token context window, is optimized for real-world applications such as customer support and in-depth research, and supports tool calls, code execution, and web browsing. It has been trained through long-term reinforcement learning in multiple domain environments. The model is now available through the xAI API, priced at $0.2 per million token input and $0.5 per million token output, and will be available for free trial on the OpenRouter platform for the next two weeks.</p>

xAI releases Grok 4.1 Fast model and Agent Tools API

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