ChatGPT vs Claude

Both ChatGPT and Claude sit in AI Assistants for Accountants, and firms regularly shortlist them together. They are not interchangeable: ChatGPT is aimed at everyday research and drafting, while Claude is built for working through long documents. ChatGPT has a free plan with paid tiers quoted by the vendor, and Claude has a free plan with paid tiers quoted by the vendor.

Choose ChatGPT if

• You need everyday research and drafting
• Free tier is genuinely useful
• Excellent for drafting and explaining

Choose Claude if

• You need working through long documents
• Handles very long documents
• Good at plain-English explanation

What to watch either way

• ChatGPT: Will state incorrect things confidently
• Claude: No ledger connection

Testing them

ChatGPT has a free plan, and Claude has a free plan. Whichever you trial, run it on your messiest real documents rather than a clean demo file — that is where the difference between these two actually shows up.