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Gamma vs Skim

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

Verdict

Gamma and Skim are both Productivity tools. Gamma scores higher in FinderAtlas's editorial review (8.4 vs 7.6 out of 10), led by ease of use. Only Gamma has a free plan or trial. Only Gamma offers an API.

Best overall

Gamma

  • Startup founders
  • Marketers
  • Sales teams
  • Educators and trainers

Choose Gamma if

  • You want a tool built for pitch decks.
  • Generates a full deck, document or webpage from a single prompt.
  • Card layout adapts to desktop and mobile screens without manual slide alignment.

Choose Skim if

  • You want a tool built for quick pre-signature review of leases, contractor quotes and terms of service, drafting a reply to push back on a clause.
  • Simple one-off $9 price covering up to 3 documents, with no subscription.
  • No account or prompt writing required.
Best value
Gamma
Best for beginners
Skim
Best for business
Gamma

Features

15 features compared.

  • Prompt-to-deck generation
    Gamma
    Available
    Skim
    Not available
  • Card-based layout
    Gamma
    Available
    Skim
    Not available
  • AI editing and restyling
    Gamma
    Available
    Skim
    Not available
  • AI images
    Gamma
    Available
    Skim
    Not available
  • Export and sharing
    Gamma
    Available
    Skim
    Not available
  • Website publishing
    Gamma
    Available
    Skim
    Not available
  • Analytics and access control
    Gamma
    Available
    Skim
    Not available
  • API and connectors
    Gamma
    Available
    Skim
    Not available
  • Five red flags
    Gamma
    Not available
    Skim
    Available
  • Plain-English rewrite
    Gamma
    Not available
    Skim
    Available
  • Paste-ready reply
    Gamma
    Not available
    Skim
    Available
  • PDF upload or pasted text
    Gamma
    Not available
    Skim
    Available
  • No account
    Gamma
    Not available
    Skim
    Available
  • Free sample
    Gamma
    Not available
    Skim
    Available
  • One-time pricing
    Gamma
    Not available
    Skim
    Available

Pricing

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

  • Pricing model
    Gamma
    Freemium
    Skim
    Paid
  • Free plan
    Gamma
    Yes
    Skim
    No
  • Starting price
    Gamma
    $0
    Skim
    $9
  • Plans
    Gamma
    6 plans
    Skim
    1 plan

Gamma plans

  • Free

    $0

    400 one-time AI credits that do not refresh

    • 400 AI credits
    • 10 cards per prompt
    • Basic image models
    • Made with Gamma badge

  • Plus

    $12/month

    Removes the Gamma badge and adds 1,000 monthly credits

    • 1,000 credits per month
    • 100 cards per prompt
    • Advanced image models
    • No Gamma badge

  • Pro

    Most popular

    $25/month

    4,000 monthly credits plus API access and custom domains

    • 4,000 credits per month
    • API access
    • Premium image models
    • 10 custom domains
    • Detailed analytics
    • Password protection

  • Ultra

    $100/month

    20,000 monthly credits and access to the most advanced models

    • 20,000 credits per month
    • API access
    • Ultra image models
    • 100 custom domains
    • Custom fonts

  • Business

    $40/user/mo

    Billed annually ($480 per seat per year)

    • SSO
    • SOC 2 documentation
    • 10,000 credits per seat
    • Shared workspace credits

  • Enterprise

    Custom/annual

    Annual agreement for larger organizations; contact sales

    • Custom credits
    • Advanced admin controls
    • SCIM
    • Invoiced billing
    • Dedicated onboarding

Skim plans

  • Skim Check

    Most popular

    $9/one-time

    One payment covering up to 3 documents, no account needed.

    • Five red flags per document
    • Rewrite for each flag
    • Paste-ready reply
    • Up to 3 documents
    • Stripe Checkout

Our ratings

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

Gamma
8.4overall
Skim
7.6overall

Gamma leads in 1 category and Skim in 0.

  • Presentation Generation Speed

    Gamma
    8.8
    Skim
    Not rated

  • Layout & Aesthetic Polish

    Gamma
    8.5
    Skim
    Not rated

  • Export Versatility (PPTX/PDF)

    Gamma
    7.8
    Skim
    Not rated

  • Mobile Responsiveness

    Gamma
    8.0
    Skim
    Not rated

  • Ease of Use

    Gamma leads by 0.5
    Gamma
    9.0
    Skim
    8.5

  • Clause Detection

    Gamma
    Not rated
    Skim
    7.0

  • Output Usefulness

    Gamma
    Not rated
    Skim
    7.5

  • Pricing Clarity

    Gamma
    Not rated
    Skim
    9.0

  • Transparency

    Gamma
    Not rated
    Skim
    6.0

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

Gamma

Pros

  • Generates a full deck, document or webpage from a single prompt
  • Card layout adapts to desktop and mobile screens without manual slide alignment
  • Exports to PowerPoint and PDF and shares by web link
  • Free plan available, and Plus at $10 per month removes the Gamma badge
  • API and ChatGPT, Claude and Slack connectors for automation

Cons

  • Free credits are one-time (400) and the free plan is limited to 10 cards per prompt
  • Free exports carry a "Made with Gamma" badge
  • API access requires Pro ($20 per month) or higher
  • Ultra costs $100 per month and is monthly only, with no annual option
  • Users on review sites report problems with billing, credit use and slow support

Skim

Pros

  • Simple one-off $9 price covering up to 3 documents, with no subscription
  • No account or prompt writing required
  • Output includes a rewrite and a ready-to-send reply, not just a list of risks
  • Free sample report to judge quality before paying
  • Privacy page clearly states what is and is not stored

Cons

  • Only the first 20,000 characters of a document are analyzed
  • Document text goes to xAI, whose retention Skim does not control
  • Fixed five-flag output with no follow-up chat
  • Operator, company and contact details are not disclosed on the site
  • Not legal advice, and no independent reviews found

Platforms

  • Web
    Gamma
    Supported
    Skim
    Supported
  • Windows
    Gamma
    Not supported
    Skim
    Not supported
  • macOS
    Gamma
    Not supported
    Skim
    Not supported
  • iOS
    Gamma
    Not supported
    Skim
    Not supported
  • Android
    Gamma
    Not supported
    Skim
    Not supported
  • API
    Gamma
    Supported
    Skim
    Not supported
  • Browser Extension
    Gamma
    Not supported
    Skim
    Not supported

Integrations

Gamma

6 integrations
  • ChatGPT
  • Claude
  • Slack
  • MCP server
  • PowerPoint export
  • PDF export

Skim

No integrations listed.

Company

  • Company
    Gamma
    Gamma
    Skim
    Not listed
  • Founded
    Gamma
    2020
    Skim
    Not listed
  • Headquarters
    Gamma
    San Francisco, CA
    Skim
    Not listed
  • Monthly users
    Gamma
    70M+ users
    Skim
    Not listed
  • Listing
    Gamma
    Claimed
    Skim
    Not claimed

Frequently asked questions

Is Gamma better than Skim?

It depends on your workflow. Gamma is built for pitch decks. Skim is built for quick pre-signature review of leases, contractor quotes and terms of service, drafting a reply to push back on a clause.

What are the key feature differences between Gamma and Skim?

Gamma: Generate presentations, documents and websites from a prompt with an AI design partner. Skim: Find the five contract clauses most likely to cost you money before you sign.

Does Gamma or Skim have a free plan?

Gamma has a free plan or trial; Skim is paid only.

Which is cheaper, Gamma or Skim?

Gamma starts at $0 and Skim starts at $9. See the pricing table above for what each tier includes.