Harvey vs Proofly

Side-by-side comparison of features, pricing, and ratings

Analysis reviewed Live tool data as of 2026-08-31
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At a glance

DimensionHarveyProofly
PricingContact for pricingFree
Primary Use CaseEnterprise legal AI platformOn-device proofreading for Chrome
Key FeatureAI Agents for end-to-end legal task automation100% local processing, no data sent off-device
PrivacyEnterprise security; cloud-based with integrationsZero data transmission; fully offline after model download
PlatformWeb + Mobile + Microsoft 365 embedding; multiple integrationsChrome extension only (requires Chrome 141+)
Best ForLaw firms, in-house legal teamsPrivacy-conscious writers, students, Chrome users

If you're a law firm or legal department needing an end-to-end AI platform for contract analysis, due diligence, and litigation support, Harvey is the obvious choice—though you'll need to contact for pricing. If you're an individual writer who values privacy and just wants a no-fuss, free grammar checker running locally on Chrome, Proofly is perfect. These tools serve completely different needs; pick based on your domain and privacy requirements.

Harvey
Harvey

Purpose-built AI agents for legal work that execute complex tasks end-to-end for law firms and in-house teams.

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Proofly
Proofly

Free on-device Chrome proofreading with Gemini Nano for total privacy

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Pricing
Contact Sales
Free
Plans
$0
Popularity
6.0k views
1 views
Skill Level
Intermediate
Beginner-friendly
API Available
Platforms
WebMobile
Plugin
Categories
⚖️ Contracts, E-Signature & Legal
✍️ Writing & Content
Features
Agentic workflows for end-to-end legal task execution
Vault: secure document storage and bulk analysis
Knowledge: cross-domain legal, regulatory, and tax research
Contract Intelligence: negotiation insights and accelerated reviews
Command Center: analytics, benchmarking, and AI governance
Shared Spaces: cross-organization collaboration with ethical walls
Harvey Mobile: access from anywhere
Memory: preferences carried across Harvey
Microsoft 365 integration (Word, Excel, Outlook, SharePoint)
Slack and Teams integration
Relativity, iManage, NetDocuments integration
Google Drive integration
Harvey Academy: on-demand training and step-by-step guidance
ROI calculators for law firms and in-house teams
Enterprise-grade security and compliance
On-device proofreading via Chrome's Gemini Nano
Real-time underlining for spelling, grammar, punctuation, capitalization, missing words, prepositions
Native-feeling correction popovers
Dedicated sidebar for reviewing all issues
Works on input fields, textareas, contenteditable elements
Toggle specific correction types
Custom keyboard shortcut to check text
Auto-correct and manual trigger modes
Zero data transmission – 100% local
No tracking, no telemetry, no account required
Works completely offline after initial model download
Lightweight, non-invasive UI
Open-source code
Free to use
Integrations
Slack
Microsoft Teams
Relativity
iManage
NetDocuments
SharePoint
Google Drive
Outlook
Word
Excel

What real users say: Harvey vs Proofly

Not marketing copy and not our opinion — a structured sweep of public discussion (reviews, forums, communities and video comments), showing what people praise and what they complain about for each tool.

Harvey

87 mentions across 6 sources · 37% positive — critical

Hacker News, YouTube, Product Hunt, Bluesky, Stack Overflow, Lemmy

What users praise

  • Specialized for legal workflows, unlike general LLMs.
  • Offers end-to-end automation for due diligence and contract analysis.
  • Integrates with major DMS like iManage, NetDocuments, and SharePoint.
  • Embedded legal intelligence in Microsoft 365.

What frustrates them

  • Almost no verified user reviews or community discussions.
  • Enterprise-only pricing excludes small and solo practices.
  • Pricing is opaque — you must contact sales for a quote.
  • No free tier or trial mentioned in available data.

Researched Jul 25, 2026

Proofly

5 mentions across 2 sources · 20% positive — critical

Hacker News, Product Hunt

What users praise

  • 100% local processing ensures maximum privacy — no data sent.
  • Free and open-source, allowing community audit and customization.
  • Works offline after initial model download, useful for travel.
  • Focused on a single task: proofreading without bloat.

What frustrates them

  • No community feedback exists to validate its accuracy or reliability.
  • Name collision with another product causes confusion in search.
  • Requires Chrome 141+ — a very recent version limits users.
  • Only spelling, grammar, punctuation — no style or tone analysis.

Researched Jul 3, 2026

Feature-by-feature

Harvey is a comprehensive legal AI platform offering features like AI Assistant for drafting and Q&A, Vault for secure document storage, Knowledge for multi-domain legal research, and Agents for automating complex legal workflows. It also provides Contract Intelligence with negotiation insights, Command Center for analytics and governance, Shared Spaces for cross-organization collaboration, and a mobile app. Proofly, on the other hand, is a focused Chrome extension that uses on-device Gemini Nano AI to proofread for spelling, grammar, punctuation, and capitalization errors in real time. It offers underlines, popover corrections, a sidebar listing all issues, and optional auto-correct. While Harvey integrates with enterprise tools like Slack, Teams, Relativity, iManage, and Microsoft Office, Proofly has no integrations—it's a standalone extension. Harvey's latest news highlights its $11B valuation, underscoring its enterprise traction. Proofly's recent v0.6.0 release shows ongoing refinement. In short, Harvey is a full legal workflow automation suite, while Proofly is a lightweight, privacy-first proofreader.

Pricing compared

Harvey uses a contact-based pricing model, typical for enterprise legal platforms. There is no public pricing or free tier, making it inaccessible for individuals or small teams without significant budget. Proofly is completely free, open-source, and requires no account or payment. For a solo practitioner or small firm, Proofly offers a zero-cost entry to basic proofreading, but lacks the legal-specific capabilities of Harvey. If you're a large law firm, Harvey's pricing likely aligns with its extensive feature set, but you'll need to negotiate. For most individual users, Proofly's free model is unbeatable.

Who should pick which

  • Law firm handling high-volume document review
    Pick: Harvey

    Harvey's Agents and Vault can automate due diligence and contract analysis, saving hours of manual work. Its integrations with legal DMS and enterprise tools support large-scale workflows.

  • Privacy-conscious blogger writing in Chrome
    Pick: Proofly

    Proofly runs 100% on-device with no data transmission, ideal for sensitive content. It's free and works offline, with no account needed.

  • In-house legal team streamlining contract negotiations
    Pick: Harvey

    Harvey's Contract Intelligence provides negotiation insights and its Shared Spaces enables collaboration across departments or with external counsel.

  • Student needing offline proofreading for essays
    Pick: Proofly

    Proofly works entirely in Chrome without internet after initial setup, perfect for offline writing. It's free and catches common errors.

  • Professional service network collaborating across organizations
    Pick: Harvey

    Harvey's Shared Spaces allow secure cross-organization collaboration, and its Command Center provides analytics and governance for such networks.

Frequently Asked Questions

Harvey vs Proofly: which should you choose?

If you're a law firm or legal department needing an end-to-end AI platform for contract analysis, due diligence, and litigation support, Harvey is the obvious choice—though you'll need to contact for pricing. If you're an individual writer who values privacy and just wants a no-fuss, free grammar checker running locally on Chrome, Proofly is perfect. These tools serve completely different needs; pick based on your domain and privacy requirements.

Does Harvey have a free trial?

Harvey's pricing is contact-based; there is no mention of a free trial in the provided data.

Can Proofly work on Firefox or Safari?

No, Proofly is exclusively a Chrome extension and requires Chrome 141+ with on-device AI capabilities.

What languages does Proofly support?

The provided data does not specify supported languages for Proofly.

Does Harvey offer a mobile app?

Yes, Harvey Mobile provides mobile web access for on-the-go legal work.

Is Proofly open-source?

Yes, Proofly's source code is open-source (version 0.6.0).

Can Harvey analyze documents in bulk?

Yes, its Vault feature enables secure document storage and bulk analysis.

Does Proofly offer style suggestions or rewrites?

No, Proofly focuses on spelling, grammar, punctuation, capitalization, and missing words. It does not provide style or tone suggestions.

What is Harvey's latest valuation?

According to recent news, Harvey AI is valued at $11 billion as of July 2026.

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Last reviewed: July 30, 2026