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Productivity · head to head

Gamma vs Stable Diffusion

Gamma logo

Gamma

Productivity

AI-powered presentation and document creation software

From
Free
Free plan
Yes
Visit GammaFull review
Stable Diffusion logo

Stable Diffusion

AI

Open-source AI image generation

From
Free
Free plan
Yes
Visit Stable DiffusionFull review

The short version

  • Gamma is an AI presentation platform.
  • Stable Diffusion is free; Gamma starts at $12/mo.
  • Only Gamma lists AI Slide Generation; only Stable Diffusion lists LoRA support.
  • Where Gamma falls short: free plan limited to 400 non-renewable credits, requiring paid plan quickly.
  • Where Stable Diffusion falls short: generated images have lower resolution and quality at non-standard dimensions.
  • Prices and features on this page were last checked on 30 August 2026.

Where they differ

Only the attributes on which Gamma and Stable Diffusion actually diverge.

Attributes where Gamma and Stable Diffusion differ
AttributeGammaStable Diffusion
PlatformsWeb, iOS, AndroidWeb, Local (GPU-based)
CategoryProductivityAI

Identical on both: starting price (Free), free tier (Yes).

Not yet recorded: founded for Gamma.

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Gamma

  • AI Slide Generation
  • Advanced Image Models
  • Custom Branding
  • API Access
  • Custom Domains
  • Analytics
  • Studio Mode
  • AI Credits

Only in Stable Diffusion

  • Text-to-image
  • Image-to-image
  • Inpainting
  • LoRA support
  • ComfyUI
  • Automatic1111
  • Multiple UIs
  • Local support

What people use each for

The jobs each tool is most often brought in to do.

Gamma

  • Rapid pitch deck creation for investor meetings and salesnot Stable Diffusion
  • Generating report decks from company data and metricsnot Stable Diffusion
  • Creating training and onboarding presentations automaticallynot Stable Diffusion
  • Building product demos and case study presentationsnot Stable Diffusion
  • Team collaboration on branded presentations with shared assetsnot Stable Diffusion

Stable Diffusion

  • ai tools managementnot Gamma
  • Workflow automationnot Gamma
  • Reportingnot Gamma

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Gamma

  • Free plan limited to 400 non-renewable credits, requiring paid plan quickly
  • Credit rollover capped at 2x monthly allocation, forcing month-to-month spending
  • Refund window limited to 3 days with usage thresholds restricting claims
  • Per-seat pricing on team plans increases costs for large organizations
  • Studio Mode limited to Ultra plan, restricting advanced editing to highest tier

Stable Diffusion

  • Generated images have lower resolution and quality at non-standard dimensions
  • Struggles with complex multi-object prompts and text generation
  • Poor rendering of human hands, limbs, and faces due to training data limitations
  • Trained primarily on English-language descriptions, reinforcing Western cultural bias
  • Requires significant GPU computational resources for local deployment

Pricing, plan by plan

Gamma

Free
  • FreeFree
    • 400 AI credits (one-time, non-renewable)
    • Up to 10 cards per prompt
    • Basic AI
  • Plus$12/mo
    • 1,000 AI credits per month
    • Up to 20 cards per prompt
    • Badge removal on exports
  • Pro$25/mo
    • 4,000 AI credits per month
    • Up to 50 cards per prompt
    • Premium AI models
  • Ultra$100/mo
    • 20,000 AI credits per month
    • Up to 75 cards per prompt
    • Most advanced AI models

Stable Diffusion

Free

No published plan breakdown. See the Stable Diffusion review.

Which should you pick?

Choose Gamma if

  • You need ai slide generation.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want advanced image models.
Gamma review

Choose Stable Diffusion if

  • You need text-to-image.
  • You want to start without paying.
  • You work on Web, Local (GPU-based).
  • You also want image-to-image.
Stable Diffusion review

Questions people ask

Is Gamma or Stable Diffusion better?
Neither clearly leads. Gamma starts at Free and Stable Diffusion at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Gamma or Stable Diffusion?
Gamma starts at Free and Stable Diffusion at Free.
Does Gamma or Stable Diffusion run on more platforms?
Gamma runs on Web, iOS, Android. Stable Diffusion runs on Web, Local (GPU-based).
Can I use Gamma for free?
Both have a free tier, so you can try either at no cost before committing.
What is Gamma best used for?
Gamma is most often used for rapid pitch deck creation for investor meetings and sales, generating report decks from company data and metrics, creating training and onboarding presentations automatically, building product demos and case study presentations. Of those, rapid pitch deck creation for investor meetings and sales and generating report decks from company data and metrics are not what Stable Diffusion is typically brought in for.
What can Gamma do that Stable Diffusion cannot?
Gamma covers AI Slide Generation, Advanced Image Models, Custom Branding, API Access. Stable Diffusion covers Text-to-image, Image-to-image, Inpainting, LoRA support.

Answered from the vendors’ own pages

Gamma: How do Gamma AI credits work?

Each plan includes a monthly AI credit allowance. Free users receive 400 one-time credits. Plus plan includes 1,000 monthly credits, Pro includes 4,000 monthly credits, and Ultra includes 20,000 monthly credits. Unused credits roll over up to 2x the monthly allowance.

Source
Stable Diffusion: Is Stable Diffusion truly free and open-source?

Yes. Stable Diffusion is released under the CreativeML Open RAIL-M license, allowing free use for both commercial and non-commercial purposes, and the code is open-source on GitHub.

Source
Gamma: What is included in the Free plan?

The Free plan includes 400 AI credits (one-time), up to 10 cards per prompt, basic AI, Gamma branding on output, and 7-day change history.

Source
Stable Diffusion: Can I use Stable Diffusion commercially for free?

Yes, if your organization has less than $1M annual revenue. Organizations exceeding $1M annually must obtain an Enterprise License from Stability AI.

Source
Gamma: What payment and refund options does Gamma offer?

Gamma offers a 3-day refund window for monthly plans if you have used less than 10-20 percent of your monthly credits depending on the plan.

Source
Stable Diffusion: What are Stable Diffusion's image resolution limitations?

The base model was trained on 512x512 pixel images, and image quality degrades noticeably when deviating from this resolution. Newer models like SDXL support higher resolutions.

Source
Gamma: How much do Team and Business plans cost?

Team plans cost $20 per seat per month with a minimum of 2 seats, including 6,000 AI credits per seat. Business plans cost $40 per seat per month with a minimum of 10 seats, including 10,000 AI credits per seat.

Source
Stable Diffusion: Can I run Stable Diffusion locally on my computer?

Yes. Stable Diffusion is open-source and can run locally on compatible hardware, though it requires a GPU for reasonable performance.

Source
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