diff --git a/public/scripts/openai.js b/public/scripts/openai.js
index 5c9173904..6a4175bd1 100644
--- a/public/scripts/openai.js
+++ b/public/scripts/openai.js
@@ -440,6 +440,40 @@ function getSystemPrompt(nsfw_toggle_prompt, enhance_definitions_prompt, wiBefor
     return whole_prompt;
 }
 
+function tryParseStreamingError(str) {
+    try {
+        const data = JSON.parse(str);
+
+        if (!data) {
+            return;
+        }
+
+        checkQuotaError(data);
+
+        if (data.error) {
+            throw new Error(data);
+        }
+    }
+    catch {
+        // No JSON. Do nothing.
+    }
+}
+
+function checkQuotaError(data) {
+    const errorText = `<h3>You have no credits left to use with this API key.<br>
+    Check your billing details on the
+    <a href="https://platform.openai.com/account/usage" target="_blank">OpenAI website.</a></h3>`;
+
+    if (!data) {
+        return;
+    }
+
+    if (data.quota_error) {
+        callPopup(errorText, 'text');
+        throw new Error(data);
+    }
+}
+
 async function sendOpenAIRequest(openai_msgs_tosend, signal) {
     // Provide default abort signal
     if (!signal) {
@@ -491,9 +525,7 @@ async function sendOpenAIRequest(openai_msgs_tosend, signal) {
                 const { done, value } = await reader.read();
                 let response = decoder.decode(value);
 
-                if (response == "{\"error\":true}") {
-                    throw new Error('error during streaming');
-                }
+                tryParseStreamingError(response);
 
                 let eventList = response.split("\n");
 
@@ -518,6 +550,8 @@ async function sendOpenAIRequest(openai_msgs_tosend, signal) {
     else {
         const data = await response.json();
 
+        checkQuotaError(data);
+
         if (data.error) {
             throw new Error(data);
         }
diff --git a/server.js b/server.js
index e7d339ac4..9b58dfad9 100644
--- a/server.js
+++ b/server.js
@@ -2285,7 +2285,8 @@ app.post("/generate_openai", jsonParser, function (request, response_generate_op
                 }
             }
             try {
-                response_generate_openai.send({ error: true });
+                const quota_error = error.response.status == 429;
+                response_generate_openai.send({ error: true, quota_error });
             } catch (error) {
                 console.error(error);
             }