AI paraphraser, grammar checker, summarizer and AI detector popular with students and writers.
Copy.ai vs Grammarly
Features, pricing, strengths and trade-offs — and which one fits your situation.
The verdict
Summary
Copy.ai is best for automating repeatable sales and marketing content workflows for GTM teams, while Grammarly is best for catching errors and polishing tone in everyday writing across the apps you already use. Only Grammarly offers grammar & style checking. Copy.ai has a medium learning curve, compared with low for Grammarly. Both Copy.ai and Grammarly offer a free plan, so you can try each before paying.
Which should you choose?
Choose Copy.ai if…
- You need automating repeatable sales and marketing content workflows for GTM teams
- You're one of: sales and revops teams, b2b marketing teams, agencies running repeatable content processes
- Workflows automate repetitive GTM content at scale
Choose Grammarly if…
- You need catching errors and polishing tone in everyday writing across the apps you already use
- Grammar & style checking matters to you
- You're one of: professionals writing emails and documents, students, non-native english writers
- You want something quicker to learn
At a glance
| Copy.ai | Grammarly | |
|---|---|---|
| Best for | Automating repeatable sales and marketing content workflows for GTM teams | Catching errors and polishing tone in everyday writing across the apps you already use |
| Free plan | Yes | Yes |
| Starting price | From $29/mo | From $12/mo |
| Learning curve | Medium | Low |
| Platforms | Web, API | Web, Windows, macOS, iOS, Android, Chrome extension |
| Ideal for | Sales and RevOps teams, B2B marketing teams, Agencies running repeatable content processes | Professionals writing emails and documents, Students, Non-native English writers, Business and support teams |
Feature comparison
| Copy.ai | Grammarly | |
|---|---|---|
| Grammar & style checking | No | Yes |
| Paraphrasing / rewriting | Yes | Paid plans only |
| Long-form drafting | Yes | Limited |
| Brand voice / style guide | Yes | Paid plans only |
| Plagiarism checker | No | Paid plans only |
| AI content detection | No | Paid plans only |
| Works in browser / other apps | — | Yes |
| Languages | — | English + 5 (translation 19) |
| Team workspace | Yes | Yes |
IncludedLimited / higher plansNot available— Not confirmed
Security & enterprise
| Copy.ai | Grammarly | |
|---|---|---|
| Business / enterprise plan | Yes | Yes |
| SSO (SAML / OIDC) | Enterprise plan | Enterprise plan |
| SCIM user provisioning | — | — |
| SOC 2 | Type II | Type II |
| ISO 27001 | — | Yes |
| HIPAA (BAA available) | — | Enterprise (BAA) |
| GDPR DPA | — | Yes |
| Data residency options | — | — |
| No training on your data | — | — |
| Audit logs | — | — |
| Admin controls | Yes | Yes |
| Deployment | Cloud | Cloud |
From each vendor's security documentation. "—" = not confirmed. What to ask vendors · Compare all tools
What each tool does
Copy.ai
Copy.ai started as an AI copywriter and is now a go-to-market AI platform built around Workflows, Agents, Tables, Chat, Brand Voice and an Infobase of company knowledge. It connects to CRMs and sales tools to automate tasks such as prospect research, outreach drafts and content repurposing. Fullcast acquired Copy.ai in October 2025 and is folding it into its RevOps suite.
Key features- Chat for one-off writing and research tasks
- Workflows that automate multi-step content processes
- Copy Agents for automated task execution
- Brand Voice and Infobase for company context
- Choice of models from OpenAI, Anthropic, Google and others
- Integrations with Salesforce, HubSpot, Gong and Zapier
Grammarly
Grammarly is an AI writing assistant that checks grammar, spelling, clarity and tone as you type in browsers, desktop apps, Microsoft Office, Google Docs and mobile keyboards. It also generates and rewrites text, and paid plans add plagiarism and AI-content detection, style guides and brand tones. Its parent company rebranded as Superhuman in 2025, but Grammarly continues as the writing assistant product.
Key features- Real-time grammar, spelling, clarity and tone suggestions
- Full-sentence rewrites and generative AI prompts
- Plagiarism and AI-content detection (paid)
- Style guides and brand tones for teams
- Grammar checks in five languages beyond English, translation into 19
- Works in browsers, desktop apps, Office, Google Docs and mobile
Pricing
Copy.ai
Free plan: yes; Chat plan ~$29/mo ($24/mo annual), Agents/Growth plans much higher (custom)
Grammarly
Free plan. Pro ~$12/mo billed annually or ~$30 monthly. Enterprise custom.
Prices last checked September 2026. Plans change often — confirm on each vendor's site.
Pros and cons
Copy.ai
Strengths- Workflows automate repetitive GTM content at scale
- Connects to CRM and sales engagement tools
- Chat plan covers several users on one subscription
- Model-agnostic, so you are not tied to one AI provider
- Workflow and agent plans are priced for companies, not individuals
- Product direction is shifting after the Fullcast acquisition
- No grammar checker, plagiarism checker or AI detector
- Building useful workflows takes setup time
Not ideal for: Individuals who want a writing editor or proofreader, or a simple copy generator, will find the GTM focus more than they need.
Grammarly
Strengths- Works almost everywhere you type, including a mobile keyboard
- Clear, easy-to-accept suggestions with little setup
- Team features include style guides, snippets and analytics
- Has a useful free plan
- Rewrites, tone adjustment, plagiarism and AI detection require a paid plan
- Generative AI prompts are capped per month except on Enterprise
- Less depth for fiction and long manuscripts than specialist editors
- Full-sentence grammar support outside English covers only five languages
Not ideal for: Novelists wanting in-depth manuscript analysis, or marketers who need long-form content generated at scale, should look at specialist tools.
Integrations
Copy.ai
Grammarly
FAQ
What is the main difference between Copy.ai and Grammarly?
Copy.ai is built for automating repeatable sales and marketing content workflows for GTM teams; Grammarly is built for catching errors and polishing tone in everyday writing across the apps you already use. Key differences: Grammarly offers grammar & style checking.
Is Copy.ai or Grammarly cheaper?
Copy.ai starts from $29/mo and Grammarly starts from $12/mo (as of September 2026). On entry price, Grammarly is cheaper — but compare what each plan includes, since limits differ. Always confirm current pricing on each vendor's site.
Do Copy.ai and Grammarly have free plans?
Both Copy.ai and Grammarly offer a free plan, so you can try each before paying.
Which is easier to use, Copy.ai or Grammarly?
Grammarly is generally quicker to learn (Copy.ai: medium, Grammarly: low learning curve).
What are good alternatives to Copy.ai and Grammarly?
Other writing tools worth comparing include QuillBot, Writesonic and Koala AI.
