xAI Grok 4.20 正式推出,上线四档推理模式并创非幻觉率测试最高纪录

Gate News 消息,3 月 19 日,xAI 的 Grok 4.20 今日正式结束 Beta 测试推出。Grok 4.20 上线 Auto、Fast、Expert、Heavy 四档推理模式:Auto 模式自动在 Fast 与 Expert 间选择;Fast 模式主打快速响应;Expert 模式进行深度思考。xAI 创始人 Elon Musk 在 X 平台发文征集用户对 Grok 4.20 的初印象,并表示「重大升级每周仍在推送」。

Grok 4.20 Beta 版在 Artificial Analysis 的非幻觉率测试中以 78% 创已测模型最高纪录,但综合智能指数为 48 分,落后于 Gemini 3.1 Pro 和 GPT-5.4 的 57 分。API 定价方面,输入为 2 美元、输出为 6 美元/百万 token,支持 200 万 token 超长上下文。

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