Grammarly vs Copy.ai
Compare Grammarly and Copy.ai on pricing, free tier, open source, API, self-host, verdict and momentum.
Both are writing tools. Grammarly is freemium (free tier (100 AI prompts/mo); Pro $12/mo (yearly)) with a free tier; Copy.ai is freemium (free trial (2k words/mo); paid plans from $1,000/mo (Growth)) with an API and a free tier. The catalog stamp is situational for Grammarly and situational for Copy.ai, last verified 2026-08-24 and 2026-08-19 respectively.
Auto-paired from catalog data — the verdicts are hand-set, the pairing is algorithmic.
Grammarly
Writing assistant for grammar, tone and clarity, everywhere you type.
Copy.ai
Marketing copy generator with workflow automation for go-to-market teams.
| field | Grammarly | Copy.ai |
|---|---|---|
| pricing | freemium · free tier (100 AI prompts/mo); Pro $12/mo (yearly) | freemium · free trial (2k words/mo); paid plans from $1,000/mo (Growth) |
| free tier | yes | yes |
| open source | no | no |
| api | no | yes |
| self-host | no | no |
| verdict | situational | situational |
| momentum | steady | steady |
| last verified | 2026-08-24 | 2026-08-19 |
| key limitation | Suggestions can flatten personal voice into corporate beige. | Long-form drafts often feel formulaic. |
The call
Pick Grammarly for daily writing where typos and tone slips matter.
Pick Copy.ai for short marketing copy and sales emails at scale.
Grammarly sources
Copy.ai sources
Open live compare →Grammarly pageCopy.ai pageGrammarly.jsonCopy.ai.json