What are the key differences between Stable Diffusion 3 and Stable Diffusion 1.5?

Compare Stable Diffusion 3 and Stable Diffusion 1.5 side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Stable Diffusion 3 and Stable Diffusion 1.5 scored?

Stable Diffusion 3 has an AI score of 7.65/10 and Stable Diffusion 1.5 has an AI score of 9.18/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

Stable Diffusion 3 vs Stable Diffusion 1.5 2026 - Compared

Stable Diffusion 3

Stable Diffusion 1.5

WINNER Stable Diffusion 1.5

Stable Diffusion 1.5 edges ahead with a score of 9.2/10 compared to 7.7/10 for Stable Diffusion 3. While both are highly...

Stable Diffusion 3

7.65 Good

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emoji_events WINNER

Stable Diffusion 1.5

9.18 Excellent

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psychology AI Verdict

Stable Diffusion 1.5 edges ahead with a score of 9.2/10 compared to 7.7/10 for Stable Diffusion 3. While both are highly rated in their respective fields, Stable Diffusion 1.5 demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: Stable Diffusion 1.5

verified Confidence: Low

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description Overview

Stable Diffusion 3

Stable Diffusion 3 is a text-to-image artificial intelligence model developed by Stability AI and announced in early 2024. It utilizes a Multimodal Diffusion Transformer (MMDiT) architecture, which differs from previous latent diffusion models by using separate pathways for processing image and text tokens before combining them. This structural change significantly improves the model's ability to...

Stable Diffusion 1.5

Stable Diffusion 1.5 is an open-weight text-to-image model released by Runway in October 2022, building on the Stable Diffusion project associated with Stability AI and researchers at LMU Munich. It uses latent diffusion, generating images by gradually removing noise from a compressed representation guided by a text prompt. Working in that compressed space helps reduce computing demands compared w...