Stable Diffusion

Name: Stable Diffusion
Brand: Stability AI
Rating: 4.6 (13 reviews)

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Open-source AI image generation from text, runnable locally

Free plan available

#5 most-listed alternative in Graphic Design, out of 258 tools in Graphic Design. Source: Toolradar data, Oct 2026.
#5 most-listed alternative in AI Image Generation, out of 182 tools in AI Image Generation. Source: Toolradar data, Oct 2026.
#6 most compared in AI Image Generation, out of 69 tools with 20+ compare-page visits in AI Image Generation. Source: Toolradar data, Oct 2026.

Freemium AI Image Generation Graphic Design

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4.6 (13 across the web)

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Reviews on SourceForge G2 Capterra

13 reviews tracked 1 press mention

The Bottom Line

Updated Sep 29, 2026

Price: Free plan available. Compare plans

Key facts

Open-source AI image generation
Stable Diffusion models for everyone
Text-to-image and image editing

Pros

Open source
Run locally
Highly customizable

Cons

Requires GPU
Technical setup

What is Stable Diffusion?

Stable Diffusion is an open-source AI image generation model that creates images from text descriptions. Generate art, photos, and designs by describing what you want. Unlike proprietary alternatives, Stable Diffusion can run locally on your own hardware. Fine-tune models on your own images. A vibrant community creates extensions, interfaces, and specialized models. AI image generation accessible to everyone.

Available on: Web

Data compiled by Toolradar Pricing checked Sep 29, 2026 · How we evaluate

Source stability.ai

Ratings Across the Web

4.6 (13 reviews)

Stable Diffusion holds an aggregate rating of 4.6 out of 5 from 13 reviews across SourceForge, G2 and Capterra, last checked September 17, 2026.

SourceForge 2 reviews

Ratings aggregated from independent review platforms. Learn more

Key Features

AI image generation
Open models
API access
Multiple products
Fine-tuning
Enterprise solutions

Pricing Plans

Free Trial

Pricing checked Sep 29, 2026. Source: stability.ai, read Sep 29, 2026

Stable Diffusion plans and prices, checked September 2026
Plan	Price	Details
Free	$0	25 free credits Basic image generation Try before purchase +1 more Show less $0.01 per credit
Stable Image Ultra	$0.08/image	8 credits/image SD 3.5 Large model Highest quality output +1 more Show less 8B parameters
SD 3.5 Large	$0.07/image	6.5 credits/image High quality generation Flexible parameters +1 more Show less Fast generation
SD Turbo	$0.04/image	4 credits/image Speed-optimized Quick iterations +1 more Show less Production ready

Calculate your cost View full pricing

Is Stable Diffusion worth the price?

Good value

The pricing for Stable Diffusion is quite fair and flexible, especially with the per-image billing for advanced models.

The free tier with 25 credits is generous for initial testing. It's best for users who need granular control over their image generation costs and quality.

Hidden Costs & Gotchas

No clear bulk credit purchase discounts beyond per-image rates

Full Stable Diffusion pricing: every plan, hidden costs and alternatives

Stable Diffusion by the numbers

Toolradar data: It is listed as an alternative to 51 other tools on Toolradar, ranking #5 of 182 in AI Image Generation. As of Oct 2026.

Stable Diffusion compared with 182 AI Image Generation tools on Toolradar, as of Oct 2026
Metric	Stable Diffusion	Peer median	Position (1 is best)
Free plan	Yes	71% have one	n/a
Listed as an alternative to	51 tools	2	#5 of 182
Compare-page visits, last 30 days	120 visits	37	#6 of 69 tools with 20+ compare-page visits

Visitors most often compare Stable Diffusion with NovelAI and Meshy (last 30 days, Oct 2026).

Listed as an alternative to: #5 on 2026-10-16 to #5 on 2026-10-31 (rank among 182 tools, 1 is best).

Each position is counted among the tools that have data for that row, as noted under it. All AI Image Generation data · How we compute this. Advertising and placement fees are not inputs to any position. Visit counts include visits from every source.

Cite this: Toolradar, “Stable Diffusion by the numbers”, Oct 2026.

Reviews

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4.6/5

Across 13 verified user reviews on G2, SourceForge, Capterra

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

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Stable Diffusion FAQ

How does Stable Diffusion enable graphic designers?

Stable Diffusion allows graphic designers to generate art, photos, and designs directly from text descriptions. This capability streamlines the creation of visual assets for various projects, offering a new tool for rapid prototyping and ideation within graphic design workflows.

What kind of user benefits most from Stable Diffusion?

Stable Diffusion is ideal for users who prioritize customization and local control over their AI image generation. Its open-source nature and ability to run on personal hardware appeal to those who want to fine-tune models with their own images and explore community-driven extensions.

How is Stable Diffusion priced?

Stable Diffusion is available on a free tier, allowing users to get started without initial cost. For those requiring more extensive usage or advanced features, paid plans are offered.

Can Stable Diffusion be run without an internet connection?

Yes, Stable Diffusion can run locally on your own hardware, which means it does not require a constant internet connection for image generation once set up. This provides users with greater control and privacy over their creative process.

What are the main trade-offs when choosing Stable Diffusion?

The main trade-offs for Stable Diffusion include the requirement for a dedicated GPU to run effectively and a more technical setup process compared to some alternatives. Users need to be comfortable with some technical configuration to get started.

How does Stable Diffusion compare to Midjourney?

Unlike Midjourney, Stable Diffusion is an open-source AI image generation model that can be run locally on a user's own hardware. This provides a high degree of customizability, including the ability to fine-tune models on personal images, which differs from proprietary services.

Does Stable Diffusion support custom model training?

Yes, Stable Diffusion allows users to fine-tune models on their own images. This feature enables the creation of highly personalized image generation capabilities tailored to specific styles or content.

Source: stability.ai

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