Every AI writing tool demo looks the same: a bland prompt, a polished paragraph, applause. That fifteen-minute demo tells you almost nothing about whether the tool will actually help your team six months from now, because it's optimized to impress a buyer, not to do your actual work.
Start with what you'll actually use it for
“AI writing assistant” covers a lot of ground — marketing copy, sales emails, internal documentation, customer support replies, technical writing. A tool that's excellent at punchy ad copy can be mediocre at consistent, accurate support replies, and vice versa. Before you compare tools, write down the three or four specific tasks you want it to do, in order of how often your team will actually do them.
The questions worth asking before you compare tools
Does it learn your voice, or does everything sound the same? Generic output is the most common complaint about AI writing tools — copy that reads fine but sounds like nobody, and that your team then has to rewrite anyway. Ask whether the tool supports brand voice guides, style examples, or fine-tuning on your own past content, and test that specifically.
Where does your input actually go? If you'll be pasting in draft contracts, customer names, or anything client-related, you need a real answer — not a marketing page — on whether your input is used to train the vendor's models, how long it's retained, and whether you can opt out. This matters even more if you're in a regulated industry or handle any client data under an NDA.
Does it fit into where your team already works? A tool that lives in its own browser tab, disconnected from your email, CMS, or docs, adds friction that quietly kills adoption. Check for a real integration with the specific tools your team uses daily, not just a generic "works with everything" claim.
What does it actually cost once everyone who needs it has a seat? Per-seat pricing that looks reasonable for three people can double or triple once you roll it out to a full team. Ask for pricing at your real expected headcount, not the cheapest published tier.
A better test than the sales demo
Pick two or three finalists and run the exact same real task through each one — not the vendor's sample prompt, your own. Use an actual email you need to send, an actual product description you need to write. Have someone on your team who didn't pick the finalists review the outputs blind, without knowing which tool produced which. This single test surfaces more than most trial periods do, because it removes the bias of already liking a tool's interface.
Red flags worth walking away from
Vague or evasive answers about data retention and training use. Pricing that's only available after a sales call, with no self-serve tier to actually test. No meaningful customization or voice-matching beyond a short style prompt. And output that still needs heavy editing on the exact task you said mattered most — a tool that's 80% there on your core use case usually isn't worth the switching cost.
The right AI writing tool is the one that measurably reduces editing time on the specific work your team does every week — not the one with the most features on a comparison chart.