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What is Claude (Claude AI)?

In short

Claude is a family of large language models built by Anthropic, used through a chat interface, a desktop and mobile app, or an API that developers build products on. For businesses it competes with ChatGPT and Gemini; what distinguishes it in practice is long-context work, careful instruction-following, and a set of enterprise terms under which customer data is not used to train the models.

Claude (often searched as Claude AI) is a family of large language models built by Anthropic, used through a chat interface, desktop and mobile apps, or an API that developers build products on. In everyday use it does what its rivals do: writes, summarises, analyses documents, answers questions and increasingly carries out multi-step work with tools.

For a business the question is rarely "is Claude good" but "good at what, on which plan, and under what terms". Those three answers matter more than any benchmark, because they decide what you may put into it and what it costs when a hundred colleagues start using it.

Which Claude models are there?

Anthropic ships a small range rather than one model, so you can trade capability against cost. In 2026 that range runs from a fast, cheap tier for high-volume work up to a frontier tier for hard reasoning, with a large context window across the family — the reason Claude is often chosen for long documents. Model names and rates change several times a year, so treat any figure you read as dated and check Anthropic's current pricing before budgeting.

What does Claude cost?

Two separate pricing worlds, and confusing them is the most common budgeting error. Subscriptions (Free, Pro, Max, Team, Enterprise) are per person per month and cover interactive use in the apps. The API is per token — you pay for text in and text out — and is what you use when Claude sits inside your own product or workflow. A team of twenty using the apps is a subscription decision; an automation answering ten thousand questions a month is an API one.

Claude or ChatGPT for a business?

Both are capable general assistants, and for most office work the difference is smaller than the debate suggests. Claude is commonly preferred for long-document work, careful instruction-following and writing that needs to keep a specified tone; ChatGPT has a wider consumer ecosystem and more third-party integrations. The more durable answer is not to pick one forever: build so the model is a configurable choice, which is the argument in keeping your AI strategy model-independent.

Is company data safe in Claude?

On the commercial tiers — API, Team and Enterprise — Anthropic's terms say customer inputs and outputs are not used to train its models by default; consumer plans differ, so the plan your staff actually signed up to is the thing to check. The practical exposure in most SMEs is not the vendor at all: it is employees pasting quotes, contracts and personnel files into personal accounts the company neither pays for nor controls. That is solved with an internal AI policy and a sanctioned tool.

How do businesses actually use Claude?

Three patterns dominate. Assisted desk work — drafting, summarising, reviewing long documents — which needs no engineering and delivers immediately. Grounded answering, where Claude answers from your own documents through retrieval rather than memory. And agents that read and write in your systems through tools, which is where the durable value sits and where the Model Context Protocol matters, since it standardises those connections.

Frequently asked questions

Is Claude free to use?

There is a free tier with usage limits, which is enough to evaluate it but not to run a team on.

  • Free is for trying it; paid individual plans lift the limits and add the newer models.
  • Team and Enterprise add administration, seat management and commercial terms.
  • None of the subscription tiers replace the API when you need Claude inside your own software.

Can Claude read our PDFs and spreadsheets?

Yes, in the apps you can upload documents directly, and via the API you pass their contents in.

  • For a handful of documents, uploading is the whole solution — no project required.
  • For a large or changing library, retrieval is cheaper and stays current, as set out in training AI on your own data.
  • Scanned documents need OCR first; a picture of a table is not a table.

Does Claude work in Dutch?

Yes, including the formal u-form and Dutch business vocabulary, and it will hold a conversation that switches between Dutch and English.

  • Quality is best when the source material is Dutch too; asking it to translate your English house style produces translated-sounding Dutch.
  • For customer-facing output, have a Dutch speaker approve the tone once and capture it as a written instruction.
  • Sector jargon is worth supplying explicitly rather than assuming.
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