Grammarly vs Copy.ai
Someone typing this is deciding between an assistant that improves writing they've already drafted and a tool built to generate copy from nothing, often for outbound or sales work.
The difference that matters
Grammarly works on a draft you already have: grammar, tone, sentence rewrites, plagiarism and AI-text detection, on a flat $12/mo Pro plan with a 2,000-AI-prompt monthly cap per member. Copy.ai starts from a blank page instead; its Chat plan ($29/mo monthly, $24/mo billed annually) gives unlimited chat words for 5 seats, but the product is really priced around its separate Workflows tier, which starts at $1,000/mo for teams automating outbound and sales copy at scale, not for an individual writer.
Side by side
| Grammarly | Copy.ai | |
|---|---|---|
| Free tier | Spelling and grammar checking, writing-tone insights, 100 AI prompts | Not present on the current direct-fetch pricing page; third-party trackers describe a 'Free Forever' tier (1 seat, 2,000 words/month of chat, 200 bonus credits, no card required) that could not be confirmed live |
| Entry paid plan | Pro, $12/mo: sentence rewrites, tone adjustment, plagiarism detection, AI-text detection, unlimited suggestions, 2,000 AI prompts/member/mo, 1 style guide, 1 brand tone, team analytics | Chat plan, $29/mo billed monthly or $24/mo billed annually ($288/yr): 5 seats, unlimited chat words, unlimited chat projects |
| Bills in | Flat per-seat subscription, secondarily metered by an AI-prompt cap (100/mo free, 2,000/member/mo on Pro) | Unlimited words for chat/copy generation on every paid tier; separate, tiered 'workflow credits' meter the automation features instead (Growth $1,000/mo = 20,000 credits/75 seats, Expansion $2,000/mo = 45,000 credits/150 seats, Scale $3,000/mo = 75,000 credits/200 seats) |
Choose Grammarly if
You already have a draft and want it tightened, corrected for tone, and checked for plagiarism or AI-generated flags.
Choose Copy.ai if
You need copy generated from scratch, especially for outbound or sales workflows, and are prepared for the real pricing to scale toward the $1,000+/mo Workflows tier once you're running that at team scale.
Our verdict
Grammarly wins for editing existing writing cheaply and reliably. Copy.ai wins for generating outbound copy at scale, but treat the $29/mo Chat plan as an entry point, not the product's real price.
What to watch out for
Grammarly's Pro plan is confirmed at $12/mo (unlimited suggestions, 2,000 AI prompts/member/mo, plagiarism detection). Copy.ai's Chat plan is confirmed at $29/mo billed monthly or $24/mo billed annually for 5 seats; a widely repeated 'Free Forever' Copy.ai tier (2,000 words/month, no card) does not appear on the current direct-fetch pricing page and could not be independently confirmed live, so don't assume it still exists before signing up expecting it.
Compare against the rest
Both of these sit in the full Writing & Copy directory, which covers 5 tools.
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