How to get most recent message within a thread

How to retrieve most recent message from a given thread when we do not know message-ID?
I would like to do so, because to know the message-ID, I need to get the whole thread. To increase the throughput of my chatbot-system, I am interested to retrieve more recent message without knowing its ID from a given thread.
Please help …

Hi, you can do that with this.

import OpenAI from "openai";

const openai = new OpenAI();

async function main() {
  const threadMessages = await openai.beta.threads.messages.list(



Thanks Bernejorge!
But I think with the above code we will get all the messages in the given thread (not just the response to my last query). While I am interested in last response only.
Of course, it (last message) could be fetched from all message but for sake of optimisation “last message only”.

When run.status === “completed” I get the last message as follows.

     // Get the last assistant message from the messages array
      const messages = await openai.beta.threads.messages.list(;

      // Find the last message for the current run
      const lastMessageForRun =
          (message) => message.run_id === && message.role === "assistant"

      // If an assistant message is found, console.log() it
      if (lastMessageForRun) {
        console.log(`${lastMessageForRun.content[0].text.value} \n`);
        return `${lastMessageForRun.content[0].text.value} \n`;
      return "Lo siento no pude recuperar tu respuesta.";