← AI Learning Hub

Current as of 9 October 2026 · refreshed monthly · check prices before you buy

Learn the four

ChatGPT, Claude, Gemini and Perplexity — what each one is actually for, how to set it up properly, and what changed last month. Work through one tool at a time. Tick the steps as you go. You do not need all four.

Updated9 October 2026
Next update1 November 2026
This roundCowork now sits inside every Claude chat. Gems are becoming Skills in Gemini. Custom GPTs are being retired. ChatGPT can now take audio uploads.

Start here: which tool for which job

Pick by the job in front of you, not by which tool you've heard most about. Most operators end up using two.

The jobReach forBecause

The training

Each tool takes about thirty minutes to set up properly. Setting one up properly beats having four set up badly.

How this page stays current

On the first of every month the four platforms' official release notes are re-read and this page is rebuilt. Each pass looks for four things, in this order:

  1. A feature these guides teach being replaced or retired — the change most likely to make a step wrong.
  2. Price and plan-name changes.
  3. Announced shutdown dates and deadlines.
  4. New abilities that save a small operator real time.

Sources: ChatGPT release notes · Claude release notes · Gemini release notes · Perplexity changelog