diff --git a/src/background/translationService.js b/src/background/translationService.js
index 938cc563..772dc034 100644
--- a/src/background/translationService.js
+++ b/src/background/translationService.js
@@ -1260,16 +1260,16 @@ const translationService = (function () {
   };
 
   /**
-   * Creates the DeepLFreeApi translation service
+   * Creates the DeepLApi translation service
    * @param {string} apiKey
    * @returns {Service} libreService
    */
-  const createDeeplFreeApiService = (apiKey) => {
+  const createDeeplApiService = (apiKey) => {
     return new (class extends Service {
       constructor() {
         super(
           "deepl",
-          "https://api-free.deepl.com/v2/translate",
+          apiKey.endsWith(":fx") ? "https://api-free.deepl.com/v2/translate" : "https://api.deepl.com/v2/translate",
           "POST",
           function cbTransformRequest(sourceArray) {
             return sourceArray[0];
@@ -1510,12 +1510,12 @@ const translationService = (function () {
       );
     } else if (request.action === "removeLibreService") {
       serviceList.delete("libre");
-    } else if (request.action === "createDeeplFreeApiService") {
+    } else if (request.action === "createDeeplApiService") {
       serviceList.set(
         "deepl",
-        createDeeplFreeApiService(request.deepl_freeapi.apiKey)
+        createDeeplApiService(request.deepl_api.apiKey)
       );
-    } else if (request.action === "removeDeeplFreeApiService") {
+    } else if (request.action === "removeDeeplApiService") {
       serviceList.set(
         "deepl",
         /** @type {Service} */ /** @type {?} */ (deeplService)
@@ -1532,12 +1532,12 @@ const translationService = (function () {
     }
 
     if (
-      twpConfig.get("customServices").find((cs) => cs.name === "deepl_freeapi")
+      twpConfig.get("customServices").find((cs) => cs.name === "deepl_api")
     ) {
-      const deepl_freeapi = twpConfig
+      const deepl_api = twpConfig
         .get("customServices")
-        .find((cs) => cs.name === "deepl_freeapi");
-      serviceList.set("deepl", createDeeplFreeApiService(deepl_freeapi.apiKey));
+        .find((cs) => cs.name === "deepl_api");
+      serviceList.set("deepl", createDeeplApiService(deepl_api.apiKey));
     }
   });
 
diff --git a/src/options/options.html b/src/options/options.html
index e467b51b..7ca0a799 100644
--- a/src/options/options.html
+++ b/src/options/options.html
@@ -576,13 +576,13 @@ <h3>Configure your Libretranslate server for text (not page) translation.</h3>
         </div>
         <hr>
         <div>
-          <h3>Configure a DeepL Free API API key to translate text (not pages) without opening new tabs.</h3>
+          <h3>Configure a DeepL Free or Pro API key to translate text (not pages) without opening new tabs.</h3>
           <label for="deeplKEY">Your API key</label><br>
           <input type="text" id="deeplKEY" placeholder="7cad3e19-32b8-4cac-a03d-64f3c1e1c1be:fx" style="width: 90%;"
             autocomplete="off" spellcheck="false"><br>
           <br>
-          <button id="addDeepL">Add DeepL Free API</button>
-          <button id="removeDeepL">Remove DeepL Free API</button>
+          <button id="addDeepL">Add DeepL API</button>
+          <button id="removeDeepL">Remove DeepL API</button>
           <p id="deeplApiResponse"></p>
         </div>
     </div>
@@ -692,4 +692,4 @@ <h3>Configure a DeepL Free API API key to translate text (not pages) without ope
   <script src="options.js"></script>
 </body>
 
-</html>
\ No newline at end of file
+</html>
diff --git a/src/options/options.js b/src/options/options.js
index 9f6aeebf..92b02813 100644
--- a/src/options/options.js
+++ b/src/options/options.js
@@ -1289,10 +1289,10 @@ twpConfig
       $("#libreKEY").value = libre.apiKey;
     }
 
-    async function testDeepLFreeApiKey(apiKey) {
+    async function testDeepLApiKey(apiKey) {
       return await new Promise((resolve) => {
         const xhttp = new XMLHttpRequest();
-        xhttp.open("GET", "https://api-free.deepl.com/v2/usage");
+        xhttp.open("GET", apiKey.endsWith(":fx") ? "https://api-free.deepl.com/v2/usage" : "https://api.deepl.com/v2/usage");
         xhttp.responseType = "json";
         xhttp.setRequestHeader("Authorization", "DeepL-Auth-Key " + apiKey);
         xhttp.onload = () => {
@@ -1303,28 +1303,28 @@ twpConfig
     }
 
     $("#addDeepL").onclick = async () => {
-      const deepl_freeapi = {
-        name: "deepl_freeapi",
+      const deepl_api = {
+        name: "deepl_api",
         apiKey: $("#deeplKEY").value,
       };
       try {
-        const response = await testDeepLFreeApiKey(deepl_freeapi.apiKey);
+        const response = await testDeepLApiKey(deepl_api.apiKey);
         $("#deeplApiResponse").textContent = JSON.stringify(response);
         if (response) {
           const customServices = twpConfig.get("customServices");
 
           const index = customServices.findIndex(
-            (cs) => cs.name === "deepl_freeapi"
+            (cs) => cs.name === "deepl_api"
           );
           if (index !== -1) {
             customServices.splice(index, 1);
           }
 
-          customServices.push(deepl_freeapi);
+          customServices.push(deepl_api);
           twpConfig.set("customServices", customServices);
           chrome.runtime.sendMessage({
-            action: "createDeeplFreeApiService",
-            deepl_freeapi,
+            action: "createDeeplApiService",
+            deepl_api,
           });
         } else {
           alert("Invalid API key");
@@ -1337,13 +1337,13 @@ twpConfig
     $("#removeDeepL").onclick = () => {
       const customServices = twpConfig.get("customServices");
       const index = customServices.findIndex(
-        (cs) => cs.name === "deepl_freeapi"
+        (cs) => cs.name === "deepl_api"
       );
       if (index !== -1) {
         customServices.splice(index, 1);
         twpConfig.set("customServices", customServices);
         chrome.runtime.sendMessage(
-          { action: "removeDeeplFreeApiService" },
+          { action: "removeDeeplApiService" },
           checkedLastError
         );
       }
@@ -1351,12 +1351,12 @@ twpConfig
       $("#deeplApiResponse").textContent = "";
     };
 
-    const deepl_freeapi = twpConfig
+    const deepl_api = twpConfig
       .get("customServices")
-      .find((cs) => cs.name === "deepl_freeapi");
-    if (deepl_freeapi) {
-      $("#deeplKEY").value = deepl_freeapi.apiKey;
-      testDeepLFreeApiKey(deepl_freeapi.apiKey).then((response) => {
+      .find((cs) => cs.name === "deepl_api");
+    if (deepl_api) {
+      $("#deeplKEY").value = deepl_api.apiKey;
+      testDeepLApiKey(deepl_api.apiKey).then((response) => {
         $("#deeplApiResponse").textContent = JSON.stringify(response);
       });
     }