Grammarly
Grammarly
FreemiumHarvey
Harvey AI
PaidGrammarly vs Harvey: Full Comparison (2026)
Grammarly is ai writing assistance for clarity, tone, and correctness. Harvey is the domain-specific generative ai platform for legal and professional services. Use the breakdown below to find the right fit for your needs.
This page presents factual information sourced from publicly available vendor documentation and product pages. AIHub does not endorse either product. The right tool depends on your specific use case, team, and requirements — we recommend evaluating both tools directly before making a decision.
Side-by-Side Overview
Pricing Model
Grammarly
FreemiumHarvey
PaidAPI Access
Grammarly
Not availableHarvey
AvailablePlatforms
Grammarly
Chrome Extension, Firefox Extension, macOS App, Windows App, iOS, Android, MS Word Plugin, Google DocsHarvey
Web, API, Microsoft Word / Office integrationIntegrations
Grammarly
7 integrationsHarvey
5 integrationsVendor
Grammarly
GrammarlyHarvey
Harvey AICategory
Grammarly
ProductivityHarvey
ProductivityLaunch
Grammarly
2009 (full AI features 2022–2023)Harvey
2022 (founded); 2023 (enterprise rollout)Models
Grammarly
Proprietary BERT-based grammar models, GPT-4.1 (GrammarlyGO generative features)Harvey
OpenAI GPT-4 class models, Anthropic Claude| Feature | Grammarly | Harvey |
|---|---|---|
| Pricing Model | Freemium | Paid |
| API Access | Not available | Available |
| Platforms | Chrome Extension, Firefox Extension, macOS App, Windows App, iOS, Android, MS Word Plugin, Google Docs | Web, API, Microsoft Word / Office integration |
| Integrations | 7 integrations | 5 integrations |
| Vendor | Grammarly | Harvey AI |
| Category | Productivity | Productivity |
| Launch | 2009 (full AI features 2022–2023) | 2022 (founded); 2023 (enterprise rollout) |
| Models | Proprietary BERT-based grammar models, GPT-4.1 (GrammarlyGO generative features) | OpenAI GPT-4 class models, Anthropic Claude |
About Grammarly
Grammarly uses AI to check grammar, spelling, punctuation, clarity, engagement, and delivery in real-time across browsers, apps, and documents.
Designed For
- Professional emails
- Academic writing
- Blog posts
- Business documents
About Harvey
Harvey is an enterprise AI platform built specifically for law firms, legal departments, and professional-services organizations. It combines frontier LLMs with legal-domain workflows to handle contract analysis, legal research, due diligence, drafting, and litigation support — grounded in a firm's own documents and case law. Harvey is used by many of the world's largest law firms and is one of the fastest-growing vertical AI companies.
Designed For
- Legal research
- Contract review & analysis
- Due diligence
- Document drafting
Strengths & Limitations
Grammarly
Strengths
- Works everywhere
- Tone detection
- Free tier useful
Limitations
- Premium required for best features
- Can over-suggest
Harvey
Strengths
- Purpose-built for legal workflows
- Grounded in firm's own documents
- Used by top global law firms
- Strong security & confidentiality
- Custom workflow agents
Limitations
- Expensive enterprise-only pricing
- No self-serve/consumer tier
- Requires implementation effort
- Narrow to legal/professional services
Frequently Asked Questions
What is the difference between Grammarly and Harvey?
Grammarly is ai writing assistance for clarity, tone, and correctness, while Harvey is the domain-specific generative ai platform for legal and professional services. Grammarly is designed for Professionals, Students; Harvey is designed for Law firms, In-house legal teams. The right fit depends on your specific requirements.
How do the pricing models compare?
Grammarly is available under a Freemium model. Harvey is available under a Paid model. Grammarly's entry tier starts at $0/mo. Harvey's entry tier starts at Custom. Always verify pricing on each vendor's official website as it may change.
What integrations does each tool support?
Grammarly integrates with Microsoft Word, Google Docs, Gmail, Outlook. Harvey integrates with Microsoft Word, iManage, SharePoint, Legal DMS systems. Check each vendor's documentation for the full and current list.
How do I choose between Grammarly and Harvey?
Consider your team's technical requirements, budget, existing tooling, and use case before deciding. We recommend signing up for free trials or demos of both tools where available, and consulting each vendor's documentation. AIHub provides this comparison for informational purposes only.
Feature Snapshot
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Data sourced from public vendor documentation. Pricing, features, and availability may change. Always verify on official vendor websites before making purchasing decisions. AIHub is not affiliated with any of the listed vendors.