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Grammarly vs Udio

Features, pricing, ratings, and pros and cons, side by side.

Grammarly logo

Grammarly

AI writing assistant that corrects, rewrites and tone-checks your text across every app

Freemium
Visit websiteView details

Verdict

Grammarly is listed under AI Assistants and Udio under Audio & Speech AI. Grammarly scores higher in FinderAtlas's editorial review (8.2 vs 6.9 out of 10), led by value for money. Both have a free plan or trial. Only Grammarly is available on Windows, macOS and Android and offers an API.

Best overall

Grammarly

  • Students
  • Professionals
  • Non-native English Writers
  • Marketing Teams

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 Udio if

  • You want a tool built for generating song drafts with vocals.
  • Generates songs with vocals from a prompt and lyrics.
  • Extend, remix and inpainting tools for editing tracks.
Best for beginners
Udio
Best for business
Grammarly

Features

17 features compared.

  • Citation Tools
    Grammarly
    Available
    Udio
    Not available
  • Style Guides and Brand Tones
    Grammarly
    Available
    Udio
    Not available
  • Cross-App Availability
    Grammarly
    Available
    Udio
    Not available
  • Enterprise Security Controls
    Grammarly
    Available
    Udio
    Not available
  • Grammar and Mistake Correction
    Grammarly
    Available
    Udio
    Not available
  • Tone Detection and Adjustment
    Grammarly
    Available
    Udio
    Not available
  • Full-Sentence and Paragraph Rewrites
    Grammarly
    Available
    Udio
    Not available
  • AI Detector and Humanizer
    Grammarly
    Available
    Udio
    Not available
  • Plagiarism Checker
    Grammarly
    Available
    Udio
    Not available
  • Text-to-song generation
    Grammarly
    Not available
    Udio
    Available
  • Extend and Remix
    Grammarly
    Not available
    Udio
    Available
  • Audio inpainting
    Grammarly
    Not available
    Udio
    Available
  • Audio-guided generation
    Grammarly
    Not available
    Udio
    Available
  • Voices
    Grammarly
    Not available
    Udio
    Available
  • Sessions
    Grammarly
    Not available
    Udio
    Available
  • Library and sharing
    Grammarly
    Not available
    Udio
    Available
  • iOS app
    Grammarly
    Not available
    Udio
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Grammarly
    Freemium
    Udio
    Freemium
  • Free plan
    Grammarly
    Yes
    Udio
    Yes
  • Starting price
    Grammarly
    $0
    Udio
    $0
  • Plans
    Grammarly
    3 plans
    Udio
    3 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

Udio plans

  • Free

    $0

    10 daily credits plus a 100-credit monthly limit

    • 10 daily credits
    • 100 monthly credits
    • Three 2-minute songs per day

  • Standard

    Most popular

    $10/month

    Up to 2,400 credits per month

    • 2,400 monthly credit limit
    • Unlimited 2-minute song creations within credits
    • Up to 6 songs at once
    • Voice Control
    • Audio-guided generation

  • Pro

    $30/month

    Up to 6,000 credits per month

    • 6,000 monthly credit limit
    • Up to 10 songs at once
    • Everything in Standard
    • Priority generation queue

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

Grammarly
8.2overall
Udio
6.9overall

Grammarly leads in 1 category and Udio in 0.

  • Ease of Use

    Grammarly
    9.1
    Udio
    Not rated

  • Feature Depth

    Grammarly
    8.3
    Udio
    Not rated

  • Value for Money

    Grammarly leads by 0.8
    Grammarly
    7.3
    Udio
    6.5

  • Performance & Speed

    Grammarly
    8.4
    Udio
    Not rated

  • Documentation & Support

    Grammarly
    8.0
    Udio
    Not rated

  • Audio Quality

    Grammarly
    Not rated
    Udio
    8.5

  • Vocal Realism

    Grammarly
    Not rated
    Udio
    8.5

  • Editing Control

    Grammarly
    Not rated
    Udio
    8.0

  • Export & Ownership

    Grammarly
    Not rated
    Udio
    3.0

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.

Udio

Pros

  • Generates songs with vocals from a prompt and lyrics
  • Extend, remix and inpainting tools for editing tracks
  • Free plan with daily and monthly credits
  • Official iOS app alongside the web app
  • Paid credit limits were doubled or raised after the UMG deal

Cons

  • Downloads of audio, video and stems are disabled on all plans
  • Free plan is capped at three 2-minute songs per day
  • No public API and no Android app
  • Licensed platform and new models are announced but have no published launch date

Platforms

  • Web
    Grammarly
    Supported
    Udio
    Supported
  • Windows
    Grammarly
    Supported
    Udio
    Not supported
  • macOS
    Grammarly
    Supported
    Udio
    Not supported
  • iOS
    Grammarly
    Supported
    Udio
    Supported
  • Android
    Grammarly
    Supported
    Udio
    Not supported
  • API
    Grammarly
    Supported
    Udio
    Not supported
  • Browser Extension
    Grammarly
    Not supported
    Udio
    Not supported
  • Chrome Extension
    Grammarly
    Supported
    Udio
    Not supported
  • Firefox Extension
    Grammarly
    Supported
    Udio
    Not supported

Integrations

Grammarly

7 integrations
  • Microsoft Office
  • Google Docs
  • Chrome
  • Safari
  • Firefox
  • Edge
  • Zendesk

Udio

No integrations listed.

Company

  • Company
    Grammarly
    Superhuman
    Udio
    Udio (Uncharted Labs)
  • Founded
    Grammarly
    2009
    Udio
    2023
  • Headquarters
    Grammarly
    San Francisco, CA
    Udio
    New York, NY
  • Monthly users
    Grammarly
    40 million people
    Udio
    Not listed
  • Listing
    Grammarly
    Claimed
    Udio
    Claimed

Frequently asked questions

Is Grammarly better than Udio?

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. Udio is built for generating song drafts with vocals.

What are the key feature differences between Grammarly and Udio?

Grammarly: AI writing assistant that corrects, rewrites and tone-checks your text across every app. Udio: Generate songs with vocals from text prompts and lyrics, with in-browser editing.

Does Grammarly or Udio have a free plan?

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

Which is cheaper, Grammarly or Udio?

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