Grammarly
AI writing assistant that corrects, rewrites and tone-checks your text across every app
Freemium
Otter.ai
Record, transcribe and summarize meetings, with action items and searchable AI chat
Freemium
Verdict
Grammarly is listed under AI Assistants and Otter.ai under Audio & Speech AI. Both have a free plan or trial. Only Grammarly is available on Firefox Extension.
Best overall
Otter.ai
- Sales teams
- Students and educators
- Journalists and media teams
- Recruiters
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 Otter.ai if
- You want a tool built for meeting transcription and summaries.
- Permanent free plan with 300 monthly transcription minutes.
- Works through a notetaker bot or bot-free via desktop apps and Chrome extension.
- Best for beginners
- Grammarly
- Best for business
- Grammarly
Features
18 features compared.
- Citation ToolsGrammarlyAvailableOtter.aiNot available
- Style Guides and Brand TonesGrammarlyAvailableOtter.aiNot available
- Cross-App AvailabilityGrammarlyAvailableOtter.aiNot available
- Enterprise Security ControlsGrammarlyAvailableOtter.aiNot available
- Grammar and Mistake CorrectionGrammarlyAvailableOtter.aiNot available
- Tone Detection and AdjustmentGrammarlyAvailableOtter.aiNot available
- Full-Sentence and Paragraph RewritesGrammarlyAvailableOtter.aiNot available
- AI Detector and HumanizerGrammarlyAvailableOtter.aiNot available
- Plagiarism CheckerGrammarlyAvailableOtter.aiNot available
- Live transcriptionGrammarlyNot availableOtter.aiAvailable
- Notetaker botGrammarlyNot availableOtter.aiAvailable
- Bot-free recordingGrammarlyNot availableOtter.aiAvailable
- AI summaries and action itemsGrammarlyNot availableOtter.aiAvailable
- Otter AI ChatGrammarlyNot availableOtter.aiAvailable
- ChannelsGrammarlyNot availableOtter.aiAvailable
- File importGrammarlyNot availableOtter.aiAvailable
- CRM syncGrammarlyNot availableOtter.aiAvailable
- Otter MCP serverGrammarlyNot availableOtter.aiAvailable
Pricing
Plans as listed by each vendor. Check their sites for current prices.
- Pricing modelGrammarlyFreemiumOtter.aiFreemium
- Free planGrammarlyYesOtter.aiYes
- Starting priceGrammarly$0Otter.ai$0
- PlansGrammarly3 plansOtter.ai4 plans
Grammarly plans
Free
$0
Basic writing help for individuals
- Mistake correction
- tone visibility
- 100 AI prompts/month
Pro
Most popular$30/month
Individuals and eligible teams wanting advanced rewrites and detection
- 2,000 AI prompts/member/month
- tone adjustment
- full-sentence rewrites
- plagiarism detection
- AI-generated text detection
- style guide
- brand tone
- priority support
Enterprise
Custom/custom
Larger organizations with security and governance needs
- Unlimited AI prompts
- unlimited style guides and brand tones
- SAML SSO
- SCIM
- audit logs API
- data loss prevention
- dedicated support
Otter.ai plans
Basic
$0
For those who want to give it a try
- 300 monthly transcription minutes
- 30 minutes per conversation
- 3 lifetime file imports
- Live transcription
- AI Chat
- iOS and Android apps
Pro
Most popular$16.99/user/mo
For individuals and small teams
- 1,200 monthly transcription minutes
- 90 minutes per meeting
- 10 monthly file imports
- Advanced search and export
- Custom vocabulary
- Salesforce and HubSpot and Zapier integrations
Business
$30/user/mo
For medium-sized teams
- Unlimited meetings and recordings
- 4 hours per meeting
- Unlimited file imports
- 3 concurrent meetings
- Custom AI workflows
- Admin activity logs and usage analytics
- Prioritized support
Enterprise
Custom/custom
For large teams and companies
- Everything in Business
- SSO and SCIM and Domain Capture
- Otter API and Webhooks
- Custom CRM and dialer integrations
- HIPAA compliance add-on
- Customer Success Program
Our ratings
Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.
- Grammarly
- 8.2overall
- Otter.ai
- 8.4overall
Grammarly leads in 1 category and Otter.ai in 1.
Ease of Use
Grammarly leads by 0.1- Grammarly
- 9.1
- Otter.ai
- 9.0
Feature Depth
- Grammarly
- 8.3
- Otter.ai
- Not rated
Value for Money
Otter.ai leads by 0.5- Grammarly
- 7.3
- Otter.ai
- 7.8
Performance & Speed
- Grammarly
- 8.4
- Otter.ai
- Not rated
Documentation & Support
- Grammarly
- 8.0
- Otter.ai
- Not rated
Transcription Accuracy
- Grammarly
- Not rated
- Otter.ai
- 8.4
Meeting Summaries & Action Items
- Grammarly
- Not rated
- Otter.ai
- 8.5
Integrations
- Grammarly
- Not rated
- Otter.ai
- 8.3
Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.
Pros and cons
Grammarly
Pros
- 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.
Cons
- 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.
Otter.ai
Pros
- Permanent free plan with 300 monthly transcription minutes
- Works through a notetaker bot or bot-free via desktop apps and Chrome extension
- Summaries, action items and AI Chat across past meetings
- Apps for web, iOS, Android, Mac and Windows, rated 4.8 on the App Store from 86K ratings
- Integrations with Zoom, Teams, Google Meet, Slack and CRMs such as Salesforce and HubSpot
Cons
- Free plan caps conversations at 30 minutes and file imports at 3 lifetime
- Pro caps monthly transcription at 1,200 minutes and meetings at 90 minutes
- Business costs $30 per user per month on monthly billing
- API access, SSO and HIPAA add-on require the Enterprise plan
- Transcription is limited to six listed languages
Platforms
- WebGrammarlySupportedOtter.aiSupported
- WindowsGrammarlySupportedOtter.aiSupported
- macOSGrammarlySupportedOtter.aiSupported
- iOSGrammarlySupportedOtter.aiSupported
- AndroidGrammarlySupportedOtter.aiSupported
- APIGrammarlySupportedOtter.aiSupported
- Browser ExtensionGrammarlyNot supportedOtter.aiNot supported
- Chrome ExtensionGrammarlySupportedOtter.aiSupported
- Firefox ExtensionGrammarlySupportedOtter.aiNot supported
Integrations
Grammarly
7 integrations- Microsoft Office
- Google Docs
- Chrome
- Safari
- Firefox
- Edge
- Zendesk
Otter.ai
13 integrations- Zoom
- Microsoft Teams
- Google Meet
- Google Calendar
- Slack
- Salesforce
- HubSpot
- Zapier
- Dropbox
- Google Drive
- Asana
- ClickUp
- Claude
Company
- CompanyGrammarlySuperhumanOtter.aiOtter.ai, Inc.
- FoundedGrammarly2009Otter.ai2016
- HeadquartersGrammarlySan Francisco, CAOtter.aiMountain View, CA
- Monthly usersGrammarly40 million peopleOtter.aiNot listed
- ListingGrammarlyClaimedOtter.aiClaimed
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Picked by our editors. Not paid placement.
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Related comparisons
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Grammarly vs Claude
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Otter.ai vs Claude
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Grammarly vs DeepSeek
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Otter.ai vs DeepSeek
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Grammarly vs Gemini Notebook
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Otter.ai vs Gemini Notebook
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- Otter.ai
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Frequently asked questions
Is Grammarly better than Otter.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. Otter.ai is built for meeting transcription and summaries.
What are the key feature differences between Grammarly and Otter.ai?
Grammarly: AI writing assistant that corrects, rewrites and tone-checks your text across every app. Otter.ai: Record, transcribe and summarize meetings, with action items and searchable AI chat.
Does Grammarly or Otter.ai have a free plan?
Yes, both do. Grammarly is freemium and Otter.ai is freemium, and each has a free plan or trial.
Which is cheaper, Grammarly or Otter.ai?
Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.