DeepSeek for Copilot
Use DeepSeek V4 models in Copilot Chat.
Setup
- Install the extension.
Ctrl+Shift+P → DeepSeek: Set API Key → enter your key from platform.deepseek.com.- Open Copilot Chat, pick a DeepSeek model. Chat.
Model Picker
Each model has a gear icon with two dropdowns:
| Setting |
Options |
Default |
| Thinking Effort |
None, High, Max |
High |
| Temperature |
Balanced (1.0), Precise (0.2), Creative (1.3), Max (1.5) |
Balanced |
No global settings needed, everything lives in the picker.
Inline Completion
DeepSeek FIM suggestions as you type. Off by default.
Ctrl+Shift+P → DeepSeek: Toggle Inline Completion.
| Setting |
Options |
Default |
deepseek.inlineCompletion.enabled |
on, off |
off |
deepseek.inlineCompletion.model |
deepseek-v4-flash, deepseek-v4-pro |
flash |
deepseek.inlineCompletion.debounceMs |
idle time before a request |
300 |
deepseek.inlineCompletion.maxTokens |
tokens per suggestion |
128 |
deepseek.inlineCompletion.maxLines |
lines per suggestion |
10 |
Suggestions are cut where they leave the block they started in, using a tree-sitter
parse rather than a guess. Grammars ship for:
typescript typescriptreact javascript javascriptreact python go rust
java csharp cpp c ruby php shellscript powershell css ini
Other languages still get suggestions, just no block trimming, bounded only by
maxLines. Suggestions are also re-indented to match the editor's tabs/spaces.
Turn off Copilot's own inline suggestions first (github.copilot.enable), otherwise
both providers compete for the same ghost text.
If suggestions look untrimmed, check DeepSeek: Show Logs for a tree-sitter
warning.
Commands
| Command |
What it does |
DeepSeek: Set API Key |
Store API key |
DeepSeek: Clear API Key |
Remove stored key |
DeepSeek: Set Temperature |
Pick a temperature preset or custom value |
DeepSeek: Toggle Inline Completion |
Turn FIM suggestions on or off |
DeepSeek: Open Settings |
Jump to the DeepSeek settings |
DeepSeek: Show Logs |
Open output channel (token counts, cache hit rate) |
Builds
Releases attach two files:
| File |
Use |
copilot-vscode-deepseek-<version>.vsix |
Install this one. |
...-nes.vsix |
Enables proposed APIs (inlineCompletionsAdditions). Sideload only, never published to the Marketplace. |
The -nes build also needs this in ~/.vscode/argv.json, which survives restarts:
{ "enable-proposed-api": ["DenizhanDaklr.copilot-vscode-deepseek"] }
Build locally with npm run package and npm run package:proposed.
Requirements
- VS Code 1.125+
- GitHub Copilot subscription
- DeepSeek API key
License
MIT
