AI Chatbots

import { Pinecone } from '@pinecone-database/pinecone';
import { OpenAIStream, StreamingTextResponse } from 'ai';

export async function POST(req: Request) {
  const { messages, sessionToken } = await req.json();
  const query = messages[messages.length - 1].content;
  
  // High-dimensional cosine retrieval (>0.82 threshold)
  const embedding = await generateEmbeddings(query);
  const matchedDocs = await pinecone.index('support-kb').query({
    vector: embedding,
    topK: 4,
    includeMetadata: true,
  });

  return new StreamingTextResponse(
    await runGroundedInference(query, matchedDocs.matches)
  );
}