Config DeepSeek with Immersive Translate (Best Practice)

Immersive Translate is arguably the best bilingual translation extension for browsers. By pairing it with DeepSeek V3, you get translation quality rivaling GPT-4 Turbo at a fraction of the cost (90% cheaper than OpenAI).

Why DeepSeek + Immersive Translate?

1. Superior Quality: DeepSeek V3 excels at nuance and context, especially between English and Chinese.
2. Ultra Fast: The API is optimized for speed, ensuring smooth scrolling and translation.
3. Cost Effective: Translating an entire book costs pennies.

Configuration Steps

Since DeepSeek is OpenAI-compatible, we use the "OpenAI Custom" method.

Step 1: Enable Developer Settings

1. Click the extension icon and go to Settings.
2. Select Developer Settings from the sidebar.
3. Toggle on "Enable Beta Testing Features".

Step 2: Add Custom Service

1. Go back to Translation Services.
2. Scroll down and select "OpenAI" (choose the generic OpenAI, not a specific provider unless listed).
3. Click "Custom API Key" or ensure it's in Custom mode.

Step 3: Enter Parameters

Fill in the OpenAI configuration card:

• API Key: Your DeepSeek Key (sk-xxxx)
• Model: deepseek-chat
• Custom API URL (Base URL): https://api.deepseek.com/v1/chat/completions
  • Important: Immersive Translate requires the full endpoint suffix /chat/completions.

Step 4: Test & Save

Click "Test Service". If successful, you are good to go!

Advanced: Rate Limiting (QPS)

• Avoid 429 Errors: If you encounter "Too Many Requests" errors, go to the service settings in Immersive Translate and lower the "Max Requests Per Second" to 3 or 5.

FAQ

Q: Output is garbled or repeats? A: Ensure the model name is exactly deepseek-chat. Do not use deepseek-v3 as it is not a valid model ID for the API.

Q: "Network Error"? A: Check if the API URL includes /chat/completions at the end on top of the base URL. Also, ensure no global proxy is blocking local requests if you are debugging.