Claude

What it does

Claude is Anthropic's assistant, built around very large context windows. That makes it the better choice when the job is reading an eighty-page supplier contract and pulling out the payment and penalty terms, rather than answering a one-line question.

Its writing style is more measured than ChatGPT's, which suits formal quotation letters and compliance replies. File upload and Projects keep one buyer's paperwork together across sessions.

Standout features

• Very large context for contracts and catalogues
• Reads uploaded PDFs, spreadsheets and images
• Projects keep buyer paperwork grouped
• Measured tone suited to formal correspondence
• Available on web, desktop and mobile

Best for