AI Assistants Beginner By Martha Calloway · Mar 2026

Best Tools for Summarising Content

You have a 40-page report to get through, a research paper you don't have time to read in full, or a long article you want the key points from. Here's what actually works for summarising content quickly.

Head-to-head comparison

Feature Claude ChatGPT Perplexity Notegpt
PDF upload Yes (large files) Yes Limited Yes
Long document handling Excellent (200k tokens) Good Limited Good
Summary quality Excellent Very good Good Good
Follow-up questions Excellent Excellent Good Limited
YouTube videos Via transcript paste Via transcript paste Direct URL Direct URL
Free tier Generous Limited (GPT-4o) Generous Limited
Cost ~£18/month ~£18/month ~£17/month ~£8/month
Best for Long documents Versatility Web + YouTube YouTube focus

Best for each use case

Best for PDFs and long documents

Claude

Handles the largest documents and produces the most accurate, nuanced summaries. Best if you regularly work with long PDFs, reports, or research papers and want to ask follow-up questions about what you just uploaded.

Best all-rounder

ChatGPT

Strong across all summarisation types. If you already have a ChatGPT account, it handles most summarisation needs without requiring a separate tool. Image summarisation and data file reading are additional advantages.

Best for web articles and YouTube

Perplexity

Paste a URL and Perplexity reads and summarises the page with citations. Excellent for articles, research pages, and anything web-based. The free tier is generous enough for daily use.

Best specifically for YouTube

Notegpt

Built specifically for summarising YouTube videos with timestamps and key points. If YouTube content is your primary summarisation need, Notegpt's focused workflow is faster than general-purpose tools.

Our recommendation

For most people, the honest answer is: use whatever AI tool you already have. If you have Claude or ChatGPT, paste the document or article in and ask for a summary. That's genuinely enough for most summarisation tasks.

If you work with very long documents regularly — 50+ pages — Claude's larger context window is a meaningful practical advantage. For web articles and YouTube, Perplexity's URL-based summarisation is the most frictionless workflow and the free tier is sufficient for daily use.

Specialist tools like Notegpt are worth considering if a specific content type (YouTube in this case) dominates your reading. But for most people, a general-purpose AI tool handles summarisation well enough without adding another subscription.