Vizards/deepseek-v4-for-copilot

Pick DeepSeek V4 from the Copilot Chat model picker — and keep everything else Copilot already gives you.

What it solves

This extension allows users to use DeepSeek V4 models within the native GitHub Copilot Chat interface in VS Code. It eliminates the need to switch to a separate chat UI or standalone extension while retaining all of Copilot's advanced features like agent mode, tool calling, and workspace search.

How it works

The extension plugs into Copilot's native provider API to add DeepSeek models (such as V4.1 Flash and V4 Pro) to the model picker. It uses the user's own API key (BYOK) and stores it securely in the OS keychain. For image handling, it supports both native vision capabilities for specific models and a "Vision Proxy" that describes images for models that cannot process them natively.

Who it’s for

Developers who use GitHub Copilot but prefer the price-performance or reasoning capabilities of DeepSeek models without sacrificing the integrated Copilot ecosystem and toolset.

Highlights

  • Full Copilot Integration: Retains agent mode, tool calling, .instructions.md files, and MCP skills.
  • Flexible Vision Support: Offers native image input for V4.1 Flash and native-to-text descriptions via Vision Proxy for others.
  • Thinking Mode: Supports DeepSeek's reasoning capabilities with configurable effort levels (none, low, high, max).
  • Zero Dependencies: Built using pure VS Code API and Node.js, requiring no external proxy servers or Python installations.
  • Secure Key Management: Stores API keys in the system's SecretStorage rather than plain text files.

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