How to Integrate DeepSeek AI with IntelliJ IDEA Using CodeGPT

1. Install IntelliJ IDEA

Download the IDE from the official website https://www.jetbrains.com.cn/idea/ . If you prefer not to download manually, you can obtain the installer by replying “IDEA” to the public account.

2. Install CodeGPT

There are two installation methods: online via the Marketplace or offline from a local file.

Open IntelliJ IDEA, go to File → Settings (Windows/Linux) or IntelliJ IDEA → Preferences (macOS), and select the Plugins tab.

In the Plugins page, click Marketplace , search for "CodeGPT".

If the plugin appears, click Install ; otherwise use the offline method by choosing Install Plugin from Disk .

After installation, restart the IDE to apply changes.

3. Open Configuration

In Settings → CodeGPT → Providers → Custom OpenAI , set the URL to https://api.openai.com/v1/chat/completions. Keep this value for now.

4. Get DeepSeek API Key

Open the DeepSeek API page, obtain your API key, and paste it into the API key field. Then replace the URL with https://api.deepseek.com/chat/completions.

5. Configure Code Completion

Select the DeepSeek Coder template, set its URL to https://api.deepseek.com/beta/completions, and adjust the model settings as shown in the screenshots.

Now you can enter prompts such as “Develop a login page” and receive AI‑generated code.