What are the key differences between Flux.1 Dev and Stable Diffusion 1.5?

Compare Flux.1 Dev and Stable Diffusion 1.5 side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Flux.1 Dev and Stable Diffusion 1.5 scored?

Flux.1 Dev has an AI score of 8.82/10 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.

Flux.1 Dev vs Stable Diffusion 1.5 2026 - Compared

Flux.1 Dev

Stable Diffusion 1.5

WINNER Stable Diffusion 1.5

Stable Diffusion 1.5 edges ahead with a score of 9.2/10 compared to 8.8/10 for Flux.1 Dev. While both are highly rated i...

Flux.1 Dev

8.82 Great

Model Get Flux.1 Dev open_in_new

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 8.8/10 for Flux.1 Dev. 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

Flux.1 Dev

Flux.1 Dev is a text-to-image diffusion model released in 2024 by Black Forest Labs, the company founded by former members of Stability AI. It is a guidance-distilled variant of the Flux.1 Pro model, released under a non-commercial license for research and development. The model uses a flow-matching architecture with transformer-based components. Its open weights have enabled community adaptation...

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...