Head to head · Productivity · updated Oct 15, 2026
Gemini vs Grammarly
Gemini scores 77 to Grammarly's 25 on public evidence for email writing & inbox management, and they rank #1 and #2 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Gemini
Google's assistant with Deep Research reports, Gmail/Docs/Drive integration and YouTube video understanding.
+ Deep Research produces long cited reports from dozens of sources, and it reads your Gmail, Drive and Calendar directly when you allow it.
− Quality swings between Flash and Pro models, and it refuses or hedges on some topics more than competitors.
Grammarly
A writing assistant that checks grammar, tone and clarity everywhere you type and rewrites or drafts text on request.
+ Works in nearly every text field on every platform, so corrections and tone suggestions follow you into Gmail, Slack and Word.
− Suggestions can flatten a distinctive voice and the premium nag prompts in the free tier are constant.
Side by side
public evidence| Gemini | Grammarly | |
|---|---|---|
| Evidence score / 100 | 77 | 25 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 145 | 3 |
| Release-feed mentions, 30d | 3 | 0 |
| Last activity | 0 days ago | – |
| Pricing | Free tier · Google AI Pro $19.99/mo | Free tier · Pro from $12/mo billed annually |
| Platforms | web, ios, android, api | web, mac, windows, ios, android, chrome-extension |
| Maker | Grammarly |
Which one?
Pick Gemini if
- you want the stronger public evidence (77 vs 25)
- you need it on api
Best for Google Workspace users who want research reports.
Pick Grammarly if
- you need it on chrome-extension, mac, windows
Best for everyday grammar and tone checking.