# Grammarly vs Leonardo AI

> Grammarly: AI writing assistant that corrects, rewrites and tone-checks your text across every app
> Leonardo AI: AI image and video studio with custom model training and a real-time canvas editor

- Grammarly profile: https://finderatlas.com/tools/grammarly
- Leonardo AI profile: https://finderatlas.com/tools/leonardo-ai
- Comparison page: https://finderatlas.com/compare/grammarly-vs-leonardo-ai
- Last reviewed: October 2026

## Verdict

Grammarly is listed under AI Assistants and Leonardo AI under Image & Visual AI. Leonardo AI scores higher in FinderAtlas's editorial review (8.5 vs 8.2 out of 10), led by value for money. Both have a free plan or trial. Only Grammarly is available on Windows, macOS and Chrome Extension.

### Choose Grammarly if

- You want a tool built for polishing emails and documents in real time across many apps, keeping tone and style consistent across a team.
- Works across desktop, browser, Office, Google Docs and mobile keyboards, so suggestions follow you between apps.
- Free plan covers core grammar, spelling and tone visibility with 100 AI prompts per month.

### Choose Leonardo AI if

- You want a tool built for game and concept art.
- Free plan with 150 tokens per day.
- Many first-party and third-party image and video models in one account.

## Pricing

| | Grammarly | Leonardo AI |
| --- | --- | --- |
| Pricing model | Freemium | Freemium |
| Free plan or trial | Yes | Yes |
| Starting price | $0 | $0 |

## Features

| Feature | Grammarly | Leonardo AI |
| --- | --- | --- |
| Citation Tools | Yes | Not listed |
| Style Guides and Brand Tones | Yes | Not listed |
| Cross-App Availability | Yes | Not listed |
| Enterprise Security Controls | Yes | Not listed |
| Grammar and Mistake Correction | Yes | Not listed |
| Tone Detection and Adjustment | Yes | Not listed |
| Full-Sentence and Paragraph Rewrites | Yes | Not listed |
| AI Detector and Humanizer | Yes | Not listed |
| Plagiarism Checker | Yes | Not listed |
| AI Canvas | Not listed | Yes |
| Multiple models | Not listed | Yes |
| Personal model training | Not listed | Yes |
| Video generation | Not listed | Yes |
| Blueprints | Not listed | Yes |
| Image editing tools | Not listed | Yes |
| Mobile apps | Not listed | Yes |
| API and MCP server | Not listed | Yes |

## Platforms

| Platform | Grammarly | Leonardo AI |
| --- | --- | --- |
| Web | Yes | Yes |
| Windows | Yes | No |
| macOS | Yes | No |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Browser Extension | No | No |
| Chrome Extension | Yes | No |
| Firefox Extension | Yes | No |

## Grammarly strengths

- Works across desktop, browser, Office, Google Docs and mobile keyboards, so suggestions follow you between apps.
- Free plan covers core grammar, spelling and tone visibility with 100 AI prompts per month.
- Pro adds tone adjustment, full-sentence rewrites, plagiarism and AI-text detection in a single subscription.
- Team features include style guides, brand tones, analytics and user groups; Enterprise adds SSO, SCIM and audit logs.
- Public REST APIs exist for analytics, licence management, writing score and detection.

## Grammarly limitations

- Monthly billing for Pro is $30, versus $12 per month on annual billing, so month-to-month use costs 2.5 times as much.
- Third-party tests of the AI Detector report notable false-positive rates (figures range from 14.2% to 34% across sources), so it is unreliable as proof.
- An App Store reviewer criticizes the iOS keyboard setup for pushing users to grant broad access.
- Experienced writers on forums report turning off many suggestions; advanced features are gated behind Pro.

## Leonardo AI strengths

- Free plan with 150 tokens per day
- Many first-party and third-party image and video models in one account
- Personal model training on paid plans
- AI Canvas for inpainting and outpainting
- Apps for iOS and Android, plus a pay-as-you-go API

## Leonardo AI limitations

- Free generations are public and the daily allowance is small
- Token costs vary by model and settings, so spend is hard to predict
- Unlimited relaxed video generation needs the $60 Ultimate plan
- Official pricing page blocks automated access, so plan details need checking on the site

## FAQ

**Is Grammarly better than Leonardo AI?**

It depends on your workflow. Grammarly is built for polishing emails and documents in real time across many apps, keeping tone and style consistent across a team. Leonardo AI is built for game and concept art.

**What are the key feature differences between Grammarly and Leonardo AI?**

Grammarly: AI writing assistant that corrects, rewrites and tone-checks your text across every app. Leonardo AI: AI image and video studio with custom model training and a real-time canvas editor.

**Does Grammarly or Leonardo AI have a free plan?**

Yes, both do. Grammarly is freemium and Leonardo AI is freemium, and each has a free plan or trial.

**Which is cheaper, Grammarly or Leonardo AI?**

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.