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Gamma vs SlideAI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Gamma starts at $8, SlideAI at $1.99. Both have a free tier. Only Gamma ships a public API.

GammaPrompts become decks, docs and sites you can publishSlideAITurns a topic or outline into an editable PowerPoint-style slide draft

Side by side

FactGammaSlideAI
CategoryPresentation & Slide GeneratorsPresentation & Slide Generators
Pricing modelFreemiumFreemium
Starts at$8 month$1.99 one_time
Public APIYesNo
PlatformsWeb, APIWeb
CompanyGamma—
Launched2020—
Last verifiedSep 6, 2026Sep 1, 2026

What our research says

Gamma

The tool that genuinely displaced PowerPoint for a lot of people, and it is profitable enough not to need your money — but credits, not seats, decide how much a plan is actually worth.

Pros

  • Layout and image choice happen without picking a template first
  • One document publishes as a deck, a doc or a live web page
  • Plus at $8/user/month already removes the Gamma badge
  • Profitable at over $100M ARR, so the vendor is not a runway risk

Cons

  • Credit accounting is opaque — a premium image can cost up to 125 credits
  • API keys are locked to Pro and above
  • The free plan's 400 signup credits do not go far on image-rich decks
  • Export fidelity to PowerPoint degrades on complex layouts

SlideAI

SlideAI is useful for getting past a blank slide deck fast, since it produces an editable draft rather than trying to be a full presentation editor, but there is no way to know who runs it or how long it has existed. Credit pricing is cheap for occasional use, and there is no subscription trap, but that also means no persistent brand or account features beyond generating drafts.

Pros

  • Produces an editable draft rather than a locked-down format
  • Cheap one-time credit packs starting under $2
  • Free daily credits before any payment is needed
  • No subscription commitment required

Cons

  • No visible company name, team, or location
  • No API for automating deck generation
  • Output is a draft only, with no design polish or animation

Which one fits

Choose Gamma if you need

  • Anyone who needs a presentable deck out of rough notes in minutes
  • Teams publishing one-page sites and documents without a website tool
  • Users who want AI layout but expect to keep editing afterwards

Choose SlideAI if you need

  • Someone who needs a rough deck outline fast, then wants to polish it in PowerPoint
  • Occasional users who don't want a recurring subscription

More comparisons

All SlideAI alternatives →Browse all Presentation & Slide Generators →