Hey, thanks for the request. Right now, DeepSeek isn’t in Cursor’s native model list. V3 and R1 used to be available, but you can’t find them in Settings > Models anymore.
You can technically connect DeepSeek using your own API key via Add Custom Model with an OpenAI-compatible endpoint, but there’s a catch. DeepSeek V4’s thinking mode requires returning reasoning_content after tool calls, and that can cause errors in the agent flow. Details and discussion here: Compatibility with DeepSeek model's design to return reasoning content after tool calls?
If you want native support back, the best move is to vote and leave a comment on the current feature request so the signal is in one place: Pls Add DeepSeek V3.2 There’s no ETA yet.