Grammarly vs Copy.ai
Plans, free access, limits and intended use side by side, taken from each vendor’s own pages. No score and no winner: the facts show where the two differ.
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Real-time grammar, tone and AI writing help inside the apps where you already type.
AI chat, brand-trained agents and workflows for sales and marketing content.
- Free access
- Grammarly: Free access
- Copy.ai: No free tier
- Paid from
- Grammarly: USD 12 per member per month
- Copy.ai: USD 24 per month
- Plans listed
- Grammarly: 3
- Copy.ai: 5
- Public API
- Grammarly: Not confirmed
- Copy.ai: Yes
Where Grammarly and Copy.ai differ
- AccessGrammarly offers free access, while Copy.ai has no free tier.
- PlansGrammarly lists 3 plans and Copy.ai lists 5.
Head to head
Each value from the tool’s profile and the vendor’s own pages
| Grammarly | Fact | Copy.ai |
|---|---|---|
| Access and price | ||
| Free access availableFree · USD 0 | Free accessDiffers | No free tier |
| USD 12 per member per monthPro · billed yearly · USD 30 billed monthly | Lowest listed paid plan | USD 24 per monthChat · billed annually as USD 288 per year · USD 29 billed monthly |
| Free plan; Pro from USD 12; Enterprise custom | Pricing model | From USD 24 a month; Enterprise by quote |
| 3 | Plans listedDiffers | 5 |
| Not confirmed | Public API | Yes |
| Not confirmed | Card to start | Not confirmed |
| Not confirmed | Open source | No |
| What it is for | ||
| Correcting and polishing everyday writing | Built for | Brand-consistent sales and marketing content for teams |
| Writing & content | CategorySame | Writing & content |
| Platforms |
|
| Works with |
|
| How current | ||
| Profile sources checked | ||
| Prices confirmed · Sep 26, 2026 | Pricing checkSame | Prices confirmed · Oct 17, 2026 |
Official source check for both tools. No hands-on testing and no score: “Differs” marks a documented difference, not a better tool.
Plans and prices
Grammarly
Prices confirmed · Sep 26, 2026- FreeUSD 0EUR 0 shown
- ProUSD 12 per member per monthbilled yearly · USD 30 billed monthly
- EnterpriseContact provider
Copy.ai
Prices confirmed · Oct 17, 2026- ChatUSD 24 per monthbilled annually as USD 288 per year · USD 29 billed monthly
- GrowthUSD 1,000 per monthbilled annually as USD 12,000 per year
- ExpansionUSD 2,000 per monthbilled annually as USD 24,000 per year
- ScaleUSD 3,000 per monthbilled annually as USD 36,000 per year
- EnterpriseContact provider
Strengths and limits
Grammarly
Strengths
- Works where you already write: The same suggestions run in browser extensions, desktop apps, Office and Google Docs add-ins and mobile keyboards.
- Usable free tier: Free has no time limit and includes spelling, grammar, tone detection and a monthly prompt allowance.
- Flexible Pro billing: Pro can be paid monthly, quarterly or yearly per member, and a team account can grow to 149 seats.
Limits to plan around
- Refunds only where law requires: You can cancel at any time, but paid time is refunded only when local law requires it.
- Review agents are paid: Plagiarism Checker, AI Detector and Citation Finder need Pro, and Free gets a single AI Grader scan a day.
- Own rewrites can trip the detector: Text rewritten by Grammarly's agents is likely to be flagged by its AI Detector.
Copy.ai
Strengths
- Several model families: The Chat plan card lists OpenAI, Anthropic and Gemini models, and a conversation can switch models midway.
- Five seats in the entry plan: The Chat plan card lists 5 seats with unlimited words and unlimited chat projects.
- Tone profile plus #tag document library: Brand Voice and Infobase let a team reuse tone and company facts instead of repeating them in every prompt.
Limits to plan around
- No free plan: The pricing page lists only paid plans, and the help center says the free plan was sunset.
- Steep step after five seats: The plan after Chat is Growth, billed yearly with no monthly option, so a sixth writer changes the budget by an order of magnitude.
- Credits do not roll over: Workflow credits reset each month and apply to the whole workspace.
See both products
Start from your task, not from a winner.
Run both tools on the same real task, then compare the result, how much editing it needs and how fast it uses your plan’s allowance.
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Questions about comparing tools
How does the comparison work?
Add two tools to the comparison tray from any tool card, then open this page. The table pulls each tool's verified plan details, platforms, strengths and limits from its profile, so both columns carry the same kind of evidence, with a separate source-check date for each tool.
Do you declare a winner?
No. The table sets two tools against each other on documented facts, not on a score. Which one wins depends on your task, your budget and your usage volume — three things we cannot see from here.
Why are some cells empty or marked unverified?
Because we could not confirm that detail on the vendor's own pages. Rather than filling the gap with a figure from elsewhere, we mark it and say why on the tool's profile.
Can I compare more than two tools?
Not at once. Two columns keep the differences readable and force a real decision. Remove either selected tool to replace it, or clear both to start a new pair.
Every figure in the table above comes from the linked profile, where the source and the verification date are listed. Browse all tools or read the editorial policy.