What it is suited to

Claude is an AI assistant built for longer, more careful work, and knowing where it is strongest saves you from using it like a search engine.

Long documents. It handles a great deal of text at once, which means you can give it an entire contract, a full report or a large set of notes and ask questions across all of it rather than in fragments. For anybody who works with long documents this is the main reason to use it.

Careful writing. Drafting, restructuring and editing where nuance matters: a difficult email, a policy, a proposal, an explanation for a non technical reader.

Analysis and reasoning. Working through a problem with several considerations, comparing options, or examining an argument for what is missing.

Code. Reading unfamiliar code, explaining what it does, writing functions, and finding a bug you have been staring at.

Working through something with you, across a conversation, rather than answering once. This is the habit that most changes results: treat the first answer as a starting point and refine it.

Where it is not the right tool. Anything needing current information it has not seen, arithmetic you could do in a spreadsheet, and anything where a wrong answer is expensive and you will not check.

And the same rule as every assistant. It produces confident text whether or not the content is correct, so verification remains your work.