Youtube AI Summarizer

Summarize any YouTube video instantly using AI. Get detailed summaries and timestamped key points with clickable links — all in 40+ languages. Works with short clips, hour-long podcasts, and everything in between.

Supports 3 AI providers — Google Gemini (free), Groq (free), and OpenAI — so you can get started without spending a cent.

Features

• Detailed AI Summaries — Comprehensive multi-paragraph summaries that capture the full substance of any video
• Timestamped Key Points — 8-15 richly detailed key points with clickable YouTube timestamp links
• Multilingual Support — Summaries and translations in 40+ languages
• Any Video Length — Works with short clips, lectures, podcasts, and multi-hour content

Input

Field	Type	Required	Default	Description
urls	string[]	✅	—	YouTube video URLs to summarize
llmProvider	string	✅	gemini	LLM provider: gemini, openai, or groq
openaiApiKey	string	✅	—	API key for the chosen LLM provider
modelName	string		(auto)	Model name override (e.g., gemini-2.0-flash, gpt-4o-mini, llama-3.3-70b-versatile)
outputLanguage	string		(same as video)	Output language (e.g., "Spanish", "Japanese")
includeTimestamps	boolean		true	Generate timestamped key points

LLM Providers

Provider	Free Tier	Default Model	API Key Source
Gemini	✅ Yes	gemini-2.0-flash	Google AI Studio
Groq	✅ Yes	llama-3.3-70b-versatile	Groq Console
OpenAI	❌ Paid	gpt-4o-mini	OpenAI Platform

Example Input

{
    "urls": [
        "https://www.youtube.com/watch?v=dQw4w9WgXcQ"
    ],
    "llmProvider": "gemini",
    "openaiApiKey": "AIzaSy...",
    "modelName": "",
    "outputLanguage": "",
    "includeTimestamps": true
}

Example Output

{
    "videoUrl": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
    "videoId": "dQw4w9WgXcQ",
    "videoTitle": "Rick Astley - Never Gonna Give You Up (Official Music Video)",
    "channelName": "Rick Astley",
    "summary": "This iconic 1987 music video features Rick Astley performing his debut single...",
    "keyPoints": [
        {
            "timestamp": "0:00",
            "seconds": 0,
            "timestampedUrl": "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=0s",
            "topic": "Song Introduction",
            "summary": "The video opens with the classic synth intro..."
        }
    ],
    "keyPointsCount": 5,
    "outputLanguage": "same as video",
    "modelUsed": "gemini-2.0-flash",
    "processedAt": "2026-03-10T12:00:00.000Z"
}

How It Works

1. Transcript Extraction — Uses the pintostudio/youtube-transcript-scraper Apify actor to reliably fetch captions (supports auto-generated & manual captions in all languages)
2. AI Summarization — Sends the transcript to your chosen LLM for intelligent summarization
3. Timestamp Mapping — Maps key topics back to specific video timestamps

For long videos, the transcript is automatically chunked and summarized in parts, then combined into a cohesive final summary.

Pricing

This actor uses pay-per-event pricing. You are charged a small fee for each video successfully summarized. The exact price per video is shown on the actor's Apify Store page before you run it.

• What you pay for: Each video that is fully summarized counts as one charged event (video-summarized).
• Failed videos are free: If a video fails to process (e.g., no captions available), you are not charged.
• Spending cap: You can set maxTotalChargeUsd in the run configuration to limit total spending per run. Once the limit is reached, remaining videos are skipped.
• LLM API costs are separate: You bring your own API key. Gemini and Groq free tiers cost nothing; OpenAI charges per token (see table below).
• Platform compute costs: Standard Apify platform fees apply on top of the per-event charge.

Cost Estimation

LLM API costs (Gemini and Groq free tiers are sufficient for most use):

Provider / Model	~Cost per 10-min video	~Cost per 1-hr video
Gemini (free tier)	$0	$0
Groq (free tier)	$0	$0
OpenAI gpt-4o-mini	~$0.01	~$0.05
OpenAI gpt-4o	~$0.10	~$0.50

Apify platform costs: Minimal compute units for the main actor + a small amount for the transcript scraper actor call (~0.01 USD per video).

Requirements

• Videos must have captions/subtitles available (auto-generated or manual)
• API key for your chosen LLM provider (Gemini, Groq, or OpenAI)
• Videos must be publicly accessible (not private or age-restricted)
• This actor calls pintostudio/youtube-transcript-scraper internally — no setup needed on your part; it runs automatically on the Apify platform

Local Development

# Install dependencies
npm install

# Create input file
mkdir -p storage/key_value_stores/default
cat > storage/key_value_stores/default/INPUT.json << 'EOF'
{
    "urls": ["https://www.youtube.com/watch?v=VIDEO_ID"],
    "llmProvider": "gemini",
    "openaiApiKey": "YOUR_GEMINI_API_KEY"
}
EOF

# Run locally (APIFY_TOKEN is required for transcript fetching via Actor.call)
# Get your token at https://console.apify.com/account/integrations
APIFY_TOKEN=your_apify_token npm run dev

Note: When deployed on Apify, the token is injected automatically — no extra setup needed.

Deploy to Apify

# Install Apify CLI
npm install -g apify-cli

# Login
apify login

# Push to Apify
apify push

License

ISC