# 重要提示：使用小米MiMo思考模式时需注意reasoning_content字段完整性

- 来源：Xiaomi MiMo (@XiaomiMiMo)
- 发布时间：2026-05-12 23:38
- AIHOT 分数：58
- AIHOT 链接：https://aihot.virxact.com/items/cmp2ta9wo00gksl1qg5olmil0
- 原文链接：https://x.com/XiaomiMiMo/status/2054224647546400871

## AI 摘要

当在多轮代理会话中启用小米MiMo思考模式，且对话历史包含工具调用时，后续用户回合中传回的助手消息必须保留完整的reasoning_content字段，否则API将返回400错误。缺失该字段会导致模型上下文不完整，进而削弱指令跟随能力、增加幻觉并显著降低用户体验。受影响的框架包括TRAE、Cursor、Roo Code等，受影响模型涵盖MiMo-V2.5-Pro、MiMo-V2.5等多个系列。开发团队正与相关维护者合作推送兼容性更新以解决此问题。更多详情请参阅官方文档。

## 正文

Heads up， agent users！

If you're using Xiaomi MiMo with thinking mode：
When thinking mode is enabled in a multi-turn agent session and the conversation history contains a tool call， any assistant message with tool calls passed back in subsequent user turns must preserve its full reasoning_content field - otherwise the API will return a 400 error.

Without it， the model's context is incomplete， which can lead to weaker instruction-following， more hallucinations， and a visibly degraded user experience.
Missing reasoning = incomplete context = degraded reasoning quality.

Affected frameworks include TRAE， Cursor， Roo Code， Codex， GitHub Copilot CLI， Zed， AutoGen. We're actively working with the maintainers to push compatibility updates.

Affected models： MiMo-V2.5-Pro， MiMo-V2.5， MiMo-V2-Pro， MiMo-V2-Omni， MiMo-V2-Flash.

See docs（https://platform.xiaomimimo.com/docs/en-US/usage-guide/passing-back-reasoning_content ）for more details.