Live Captions Overview

The only TikTok Live caption API. Real-time AI transcription and translation for any TikTok Live stream.

What Are Live Captions?

TikTool Live Captions provides real-time AI-powered transcription and translation for any TikTok Live stream. Convert spoken audio into text with sub-second latency, detect the speaker’s language automatically, and translate to 50+ languages.

WebSocket API

Connect via WebSocket for real-time caption events.

Node.js SDK

Use the TikTokCaptions class for easy integration.

Features

• Auto Language Detection - Automatically detects the speaker’s language
• 50+ Translation Languages - Translate captions in real-time
• Speaker Diarization - Identify different speakers
• Partial & Final Results - Get instant partial captions and polished final text
• Credit-Based Pricing - 1 credit = 1 minute of audio in 1 language

Caption Credit Pricing

Pack	Credits	Price	Rate
Starter	1,000	$10	$0.010/credit
Creator	5,000	$35	$0.007/credit
Agency	20,000	$100	$0.005/credit

Caption credits require an active Basic subscription or higher. Multi-language translation multiplies credit usage (2 languages = 2× credits).

Quick Example

import WebSocket from 'ws';

const ws = new WebSocket(
  'wss://api.tik.tools/captions?uniqueId=streamer&apiKey=YOUR_KEY&translate=en&max_duration_minutes=120'
);

ws.on('message', (data) => {
  const msg = JSON.parse(data.toString());
  switch (msg.type) {
    case 'caption':
      const prefix = msg.speaker ? `[${msg.speaker}] ` : '';
      console.log(`${prefix}${msg.text}${msg.isFinal ? ' ✓' : '...'}`);
      break;
    case 'translation':
      console.log(`  → ${msg.text}`);
      break;
    case 'credits':
      console.log(`Credits: ${msg.remaining}/${msg.total} min remaining`);
      break;
  }
});