At a glance
| Grammarly | Jasper | |
|---|---|---|
| Pricing | Freemium | Free Trial |
| Free plan | Yes | Free trial only |
| Starting price | $30/month | $69/month |
| Category | Writing | Marketing |
| Best for | Proofreading emails, reports, and documents | Marketing teams producing on-brand campaign copy across channels |
Prices come from each official site and can change. Check the official pricing pages before subscribing.
Key features
Grammarly
- Spelling and grammar corrections as you write
- Tone detection, plus tone adjustment on Pro
- Full-sentence rewrites with one click (Pro)
- Plagiarism and AI-generated text detection (Pro)
- AI text generation: 100 prompts/month free, 2,000 on Pro
- Style guides, brand tones, and snippets for teams
Jasper
- Canvas workspace for creating on-brand marketing content
- 100+ pre-built agents for common marketing workflows
- Jasper IQ: Brand Voices, Knowledge assets, Audiences and Style Guide
- GEO tools to measure brand visibility in AI answer engines
- No-code Jasper Studio for building custom AI agents (Business)
- Jasper Grid for scaled, systematic content production (Business)
- Content creation and repurposing in 30+ languages
Pros
Grammarly
- Free plan covers core spelling and grammar checks
- Pro adds plagiarism and AI-text detection in the same tool
- Annual billing cuts Pro to $12/month
- Pro free trial available
Jasper
- Built specifically for marketing, with brand voice, audience and style controls
- SOC 2 Type II certified; Jasper says it does not train AI models on customer data
- 7-day free trial of Pro, and monthly Pro can be cancelled anytime
- 20% discount for nonprofits
Cons
Grammarly
- Monthly billing for Pro is much higher ($30/month vs. $12/month annually)
- Free plan does not include sentence rewrites or tone adjustment
- Suggestions can miss context and sometimes change the intended meaning
- Writing help is focused on English
Jasper
- No free plan; Pro costs $69/month per seat on monthly billing
- Pro includes only one seat; adding users requires the custom-priced Business plan
- Pro limits customization to 2 Brand Voices, 5 Knowledge assets and 3 Audiences
- API access, custom agents and SSO are Business-only, and Business starts with a 12-month commitment
Which one should you choose?
Choose Grammarly if you need
- Proofreading emails, reports, and documents
- Improving clarity and tone in professional writing
- Checking academic papers for plagiarism and citation consistency
- Helping non-native speakers write fluent English
Choose Jasper if you need
- Marketing teams producing on-brand campaign copy across channels
- Content marketers repurposing and translating assets for multiple markets
- Brand managers enforcing voice and style rules in AI-generated content
- Enterprises tracking and improving how their brand appears in AI search answers
Grammarly vs Jasper: FAQ
Is Grammarly better than Jasper?
Neither is better for everyone. Grammarly: Grammarly is an AI-powered writing assistant that provides real-time grammar, tone, and clarity suggestions across various apps and websites. Jasper: AI writing assistant designed for marketing and business content creation. Pick Grammarly for proofreading emails, reports, and documents, and Jasper for marketing teams producing on-brand campaign copy across channels.
Which is cheaper, Grammarly or Jasper?
Grammarly's paid plans start at $30/month, compared with $69/month for Jasper, based on each official pricing page at the last update. Limits differ between plans, so compare what each tier includes.
Do Grammarly and Jasper have free plans?
Grammarly has a free option. Jasper offers a free trial, then requires a paid plan.