GPT Image 1.5 vs. Stable Diffusion
Which ai image generation tool is better? Comprehensive side-by-side analysis.
Comparison Winner
GPT Image 1.5
OpenAI's native image generation — seamlessly integrated into GPT-4o
Image Quality87 %
Prompt Adherence90 %
Pricing / Value92 %
Commercial Rights97 %
Editing (Inpainting)95 %
API & Integration95 %
toolzoo.io
TEST RESULT
GREAT (2.1)
87 of 100
Stand 03/2026
vs.
Stable Diffusion
Open-source AI image generation with SD 3.5 and Stable Assistant
Image Quality88 %
Prompt Adherence87 %
Pricing / Value89 %
Commercial Rights94 %
Editing (Inpainting)92 %
API & Integration92 %
toolzoo.io
TEST RESULT
GREAT (2.2)
84 of 100
Stand 03/2026
Feature
Overview
Overview
Score
87%
84%
Founded
2023
2022
Headquarters
San Francisco, USA
London, UK
Free Tier
Yes
Yes
Starting Price
$20/mo
Free
Pricing Model
SUBSCRIPTION
CREDITS
GDPR & Privacy
GDPR & Privacy
GDPR Compliant
Yes
No
Server Location
US, EU
US, EU
EU Server Available
Yes
Yes
Model & Performance
Model & Performance
Latest Model
GPT Image 1.5 (replaces DALL·E 3)
SD 3.5 Large/Turbo/Medium/Flash
💰 Pricing Plans
💰 Pricing Plans
Free Plan
Free (limited via ChatGPT)
Free (open source, self-hosted, <$1M rev)
Plus Plan
$20/mo ChatGPT Plus (unlimited image gen)
$19/mo Stable Assistant Pro (1,900 credits)
Pro Plan
$200/mo ChatGPT Pro (priority)
$49/mo Plus (5,500 credits) | $99/mo Premium (12K)
Enterprise Plan
—
Custom Enterprise license (>$1M revenue)
📱 Platform Availability
📱 Platform Availability
Web App
Yes
Yes
Mobile App (iOS/Android)
Yes
No
API Available
Yes
Yes
🎨 Image Generation
🎨 Image Generation
Text → Image
Yes
Yes
Image → Image
Yes
Yes
Inpainting
Yes
Yes
Outpainting
No
Yes
Max Resolution
1792×1024
2048×2048
Style Reference
Yes
Yes
ControlNet / Pose Control
No
Yes
IP-Adapter (Character)
—
Yes
Seed Control
No
Yes
Custom LoRA Upload
No
Yes
Face Consistency
Yes
Yes
AI Upscaling
No
Yes
Community Models
No
Yes
📋 Rights & Licensing
📋 Rights & Licensing
Commercial License
Yes
Yes
Watermark-free Output
Yes
Yes
Ready to choose?
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