Hi there,

Hi there,

I'm using the GitHub Copilot desktop app and connected a third-party model via my own API key (BYOK). The model I'm using supports configurable reasoning / thinking effort, but the desktop app doesn't offer any way to adjust it.

In the IDE clients (VS Code, Visual Studio, JetBrains), you can hover over a reasoning model and select the desired "Thinking Effort" level from a submenu. However, the GitHub Copilot desktop app doesn't expose this option at all — there's no "Thinking Effort" menu or any equivalent setting, even though the connected model supports it.

It would be great if the desktop app could:

1. Show the "Thinking Effort" selector for reasoning models that support configurable thinking effort, matching the IDE experience.

2. Allow setting a default thinking effort level for models in settings.

Thanks for considering this. Happy to provide more details or screenshots if needed.

Best regards

---
| Field | Value |
| --- | --- |
| App version | 1.1.5 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 5 |

从桌面应用的 /chat 体验及其设置入手，然后追踪推理模型如何公开其能力，以及 IDE 客户端如何呈现 Thinking Effort。完成标准是：受支持的推理模型在聊天中显示 Thinking Effort 选择器，并且用户可以在设置中配置默认级别，同时行为与所要求的 IDE 体验一致。

由索引模型根据 Issue 内容生成。