API Credentials for DeepL

Guide to obtaining tokens, keys, and connections.

To use the DeepL API you need just one piece of information: your "Authentication Key." Below is a step‑by‑step guide to obtain it.

Authentication Key

  1. 1

    Open your browser and go to the official DeepL website (https://www.deepl.com). Click “Log in” if you already have an account, or “Sign up” if you don’t.

  2. 2

    If you’re creating a new account, fill in the form with your email and password.

  3. 3

    Once logged in, look for your profile icon or name (usually at the top‑right corner) and click it. In the menu, choose “Account” or “Account settings.”

  4. 4

    On the account page, locate the section labeled “API” or “Authentication Key.” You’ll see two plan options: “DeepL API Free” or the paid, unlimited “DeepL API Pro.” Select the plan you need.

  5. 5

    After the plan is activated, your key will appear in the same section—a long string of letters and numbers separated by hyphens (for example: abcd1234-ef56-7890-abcd-123456ef7890).

  6. 6

    Copy the key and store it in a safe place.