AI Tools, and What Each One Is Actually Good At

19 tools we use or have tested, with the honest version: what each is genuinely the best choice for, and where it lets you down. Every entry has a weakness listed, because a list that recommends everything recommends nothing.

General assistants

The ones people mean when they say AI. Differences between them are smaller than the internet suggests; pick one and learn it properly.

ChatGPT

Free tier

OpenAI's assistant, the one most people start with.

Best for
Everyday writing, explanation and images in the same place.
Watch out
Will state something wrong with complete confidence. Check anything factual.
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Claude

Free tier

Anthropic's assistant. Strong at long documents and code.

Best for
Working through a long file or a messy document without losing the thread.
Watch out
Message limits on the free tier arrive quickly in a long session.
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Google Gemini

Free tier

Google's assistant, wired into Search and Workspace.

Best for
Anything that needs current information, and work inside Docs and Sheets.
Watch out
Quality varies more than the others between task types.
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Perplexity

Free tier

A search engine that answers and cites its sources.

Best for
Research where you need to click through and check the source.
Watch out
Summarises well but will sometimes cite a page that does not say what it claims.
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19 tools, every one with a weakness listed. No affiliate links — we earn nothing from any of these.

Knowing the list is not the skill

Anyone can open ChatGPT. The work is spotting the answer that is wrong, and building the good ones into something that runs without you. That is the course — six weeks, no coding needed, and you bring your own task on day one.