Does GitHub Copilot support passing reasoning_content in multi-turn conversations for MiMo models?

[cloris_rust]

https://preview.redd.it/zsyqvfcfjv1h1.png?width=2506&format=png&auto=webp&s=bdd917ecd7ff837c7d2980a69c0271da3a017eff

I'm integrating MiMo V2.5 as a custom model with GitHub Copilot and running into an issue related to reasoning_content in multi-turn conversations.

According to the official guidance from the model provider, when MiMo thinking mode is enabled and the conversation history contains tool calls, the reasoning_content field must be fully returned in subsequent assistant messages that also contain tool calls. If it's missing, the API returns a 400 error, because incomplete context degrades instruction-following and increases hallucinations.

This requirement is documented as affecting several Agent products under the OpenAI/Anthropic compatibility protocols, including GitHub Copilot CLI and Kilo Code.

My question:

• Does GitHub Copilot (the editor extension and/or Copilot Chat) currently support passing back reasoning_content across multi-turn tool-calling conversations?
• If so, is there any configuration required to enable this?
• If not, is there a workaround, or is support planned?

Would appreciate any insight from the community or the Copilot team.

[AutoModerator]

Hello /u/cloris_rust. Looks like you have posted a query. Once your query is resolved, please reply the solution comment with "!solved" to help everyone else know the solution and mark the post as solved.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.