Gemini Pro for Voice

import { GoogleGenerativeAI } from "@google/generative-ai";

const genAI = new GoogleGenerativeAI(process.env.GOOGLE_API_KEY);

const model = genAI.getGenerativeModel({
  model: "gemini-1.5-pro",
  generationConfig: {
    maxOutputTokens: 150,  // Keep responses short for voice
    temperature: 0.7,      // Natural but consistent
  }
});

// Streaming for low latency
const result = await model.generateContentStream({
  contents: [
    { role: "user", parts: [{ text: userMessage }] }
  ],
  systemInstruction: systemPrompt,
});

for await (const chunk of result.stream) {
  const text = chunk.text();
  // Send to TTS immediately
  sendToTTS(text);
}