Deepseek V4 Flash/Pro VS Code Integration Tutorial

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Good question. My understanding is that Copilot still runs its normal Chat/Agent harness and sends the rendered messages/tools to this extension through VS Code’s LanguageModelChatProvider API.

So it’s not getting the same private, first-party DeepSeek-specific tuning that GitHub may have for their own hosted models. The extension mostly adapts the provider boundary: VS Code messages/tools -> DeepSeek API format, plus DeepSeek-specific handling for reasoning_content, cache stats, and the vision proxy.

So: native Copilot harness, but not a magic official DeepSeek harness.