added gpt TTS (untested)

src/agent/speak.js

@@ -37,18 +37,29 @@ $s.Speak('${txt.replace(/'/g,"''")}'); $s.Dispose()"`
     });
 
   } else {
+
+    function getModelUrl(prov) {
+      if (prov === 'pollinations') {
+        return 'https://text.pollinations.ai/openai'
+      } else if (prov === 'openai') {
+        return 'https://api.openai.com/v1/audio/speech'
+      } else {
+        // fallback
+        return 'https://api.openai.com/v1/audio/speech'
+      }
+    }
+
     // remote audio provider
     let prov, mdl, voice, url;
     if (typeof model === "string") {
       [prov, mdl, voice] = model.split('/');
-      url = "https://text.pollinations.ai/openai";
+      url = getModelUrl(prov);
     } else {
       prov = model.api;
       mdl = model.model;
       voice = model.voice;
-      url = model.url || "https://text.pollinations.ai/openai";
+      url = model.url || getModelUrl(prov);
     }
-    if (prov !== 'pollinations') throw new Error(`Unknown provider: ${prov}`);
 
     try {
       let audioData = await sendAudioRequest(txt, mdl, voice, url);

src/models/gpt.js

@@ -89,5 +89,30 @@ export class GPT {
 
 }
 
+export async function sendAudioRequest(text, model, voice, url) {
+    const payload = {
+        model: model,
+        voice: voice,
+        input: text
+    }
 
+    let audioData = null;
+
+    let config = {};
+
+    if (url)
+        config.baseURL = url;
+
+    if (hasKey('OPENAI_ORG_ID'))
+        config.organization = getKey('OPENAI_ORG_ID');
+
+    config.apiKey = getKey('OPENAI_API_KEY');
+
+    openai = new OpenAIApi(config);
+
+    const mp3 = await openai.audio.speech.create(payload);
+    const buffer = Buffer.from(await mp3.arrayBuffer());
+    const base64 = buffer.toString("base64");
+    return base64;
+}