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ChatGPT vs Stable Diffusion

ChatGPT logo

ChatGPT

Software

AI-powered conversational assistant for productivity and creativity

From
Free
Rated
-
Full reviewWebsite
Stable Diffusion logo

Stable Diffusion

Software

Open-source AI image generation

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ChatGPT openAI's own pricing page, as captured by the Internet Archive in 2023, listed ChatGPT Plus at $20 per user per month, Team at $25 to $30 per user per month with a minimum of 2 users, and Enterprise available only from 150 users. The live page refuses automated reads, so these are 2023 figures and the tiers have changed since.; Stable Diffusion generated images have lower resolution and quality at non-standard dimensions
  • They diverge on capability: ChatGPT covers Natural language conversation, Stable Diffusion covers Text-to-image.

Where they differ

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

Attributes where ChatGPT and Stable Diffusion differ
AttributeChatGPTStable Diffusion
Pricing modelfreemiumUnknown
PlatformsWeb, Ios, Android, ApiWeb, Local (GPU-based), Cloud APIs
Founded20152019

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

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 ChatGPT

  • Natural language conversation
  • Code generation and debugging
  • Text analysis and summarization
  • Creative writing assistance
  • Math and problem solving
  • Language translation
  • Research assistance
  • Image generation (DALL-E)

Only in Stable Diffusion

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

Both cover

  • Web support
  • Api support

What people use each for

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

ChatGPT

  • Content creationnot Stable Diffusion
  • Code assistancenot Stable Diffusion
  • Research and analysisnot Stable Diffusion
  • Learning and educationnot Stable Diffusion
  • Creative writingnot Stable Diffusion

Stable Diffusion

  • ai tools managementnot ChatGPT
  • Workflow automationnot ChatGPT
  • Reportingnot ChatGPT

Where each one falls short

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

ChatGPT

  • OpenAI's own pricing page, as captured by the Internet Archive in 2023, listed ChatGPT Plus at $20 per user per month, Team at $25 to $30 per user per month with a minimum of 2 users, and Enterprise available only from 150 users. The live page refuses automated reads, so these are 2023 figures and the tiers have changed since.

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

ChatGPT

Free
  • FreeFree
    • Access to GPT-3.5
    • Standard response speed
    • Regular model updates
  • ChatGPT Plus$20/month
    • Access to GPT-4
    • Faster response times
    • Priority access during peak times

Stable Diffusion

Free

No published plan breakdown. See the Stable Diffusion review.

Which should you pick?

Choose ChatGPT if

  • You need natural language conversation.
  • You want to start without paying.
  • You work on Web, Ios, Android, Api.
  • You also want code generation and debugging.
ChatGPT review

Choose Stable Diffusion if

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

Questions people ask

Is ChatGPT or Stable Diffusion better?
Neither clearly leads. ChatGPT 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, ChatGPT or Stable Diffusion?
ChatGPT starts at Free and Stable Diffusion at Free.
Does ChatGPT or Stable Diffusion run on more platforms?
ChatGPT runs on Web, Ios, Android, Api. Stable Diffusion runs on Web, Local (GPU-based), Cloud APIs.
Can I use ChatGPT for free?
Both have a free tier, so you can try either at no cost before committing.
What is ChatGPT best used for?
ChatGPT is most often used for content creation, code assistance, research and analysis, learning and education. Of those, content creation and code assistance are not what Stable Diffusion is typically brought in for.
What can ChatGPT do that Stable Diffusion cannot?
ChatGPT covers Natural language conversation, Code generation and debugging, Text analysis and summarization, Creative writing assistance. Stable Diffusion covers Text-to-image, Image-to-image, Inpainting, LoRA support. Both handle Web support, Api support.

Answered from the vendors’ own pages

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
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
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
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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