Copy.ai vs Grammarly: Which AI Writing Tool Is Better in 2026?
Copy.ai
From $36Grammarly
From $12Quick verdict
Overall pick: Tie
Pick Copy.ai if you need copy templates, multilingual output, a public API and flat-priced team access for sales and GTM content generation. Pick Grammarly if your priority is everyday editing with a plagiarism checker and brand voice at a lower per-seat entry price. Copy.ai lacks a plagiarism checker and SEO mode; Grammarly lacks templates, multilingual output and a public API. Neither tool offers SEO optimisation.
- Grammarly's entry plan ($12) is 67% cheaper than Copy.ai's ($36).
- Grammarly charges per user while Copy.ai uses a flat price, so Copy.ai gets relatively cheaper as your team grows.
- Both offer a free plan, so you can test them side by side at no cost.
- Only Copy.ai offers: copy templates, multilingual output, public api.
- Only Grammarly offers: plagiarism checker.
Cost calculator
| Tool | Monthly | Yearly |
|---|---|---|
| Copy.ai · flat | $36.00 | $432 |
| Grammarly · per user | $60.00 | $720 |
Based on entry-level paid plans. Prices change, so check the vendor before you buy.
Which one should you choose?
| If you need… | Pick | Why |
|---|---|---|
| Generating sales and GTM copy at scale | Copy.ai | Copy.ai offers copy templates, brand voice, team workspaces and a public API, and is positioned for sales copy and GTM workflows. |
| Proofreading and clarity editing of everyday writing | Grammarly | Grammarly is positioned for everyday writing and editing, with brand voice and a plagiarism checker that Copy.ai does not offer. |
| Checking content for plagiarism | Grammarly | Grammarly includes a plagiarism checker; Copy.ai does not. |
| Producing multilingual output | Copy.ai | Copy.ai supports multilingual output; Grammarly does not. |
| Lowest entry cost per seat | Grammarly | Grammarly starts at $12 per seat versus Copy.ai's flat $36 starting price. |
Feature comparison: Copy.ai vs Grammarly
| Feature | ||
|---|---|---|
| Free plan | ✅ | ✅ |
| Starting price | $36 /mo | $12 /user/mo |
| Copy templates | ✅ | — |
| Brand voice / style memory | ✅ | ✅ |
| Plagiarism checker | — | ✅ |
| Browser extension | ✅ | ✅ |
| SEO optimisation | — | — |
| Team workspaces | ✅ | ✅ |
| Multilingual output | ✅ | — |
| Public API | ✅ | — |
Highlighted rows are where the tools differ.
Pros and cons
Copy.ai
- Includes copy templates, brand voice, team workspaces, multilingual output and a public API
- Flat billing starting at $36 rather than per-seat pricing
- Free plan available
- Positioned for sales copy and GTM workflows
- No plagiarism checker
- No SEO optimisation mode
- Higher starting price than Grammarly
Grammarly
- Includes a plagiarism checker, which Copy.ai lacks
- Lower starting price at $12 per seat
- Browser extension and team workspaces included
- Free plan available
- No copy templates
- No multilingual output
- No public API
- No SEO optimisation mode
At a glance
AI workflows for go-to-market teams.
Founded 2020 · From $36 · 6/8 tracked features
Best for: sales copy, GTM workflows
See Copy.ai alternatives →Writing assistant for grammar, tone and clarity.
Founded 2009 · From $12 · 4/8 tracked features
Best for: everyday writing, editing
See Grammarly alternatives →FAQ
Is Copy.ai cheaper than Grammarly?
No. Copy.ai starts at a flat $36, while Grammarly starts at $12 per seat. The total cost depends on how many seats you need.
Which tool has a plagiarism checker?
Grammarly includes a plagiarism checker; Copy.ai does not.
Does either tool offer SEO optimisation?
No. Neither Copy.ai nor Grammarly lists an SEO optimisation mode.
Which tool offers a public API?
Copy.ai offers a public API; Grammarly does not.
Which tool supports multilingual output?
Copy.ai supports multilingual output; Grammarly does not.
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Data last reviewed: pending verification. All AI Writing tools →