ByteDance's latest image generation model unifying text-to-image and image editing in a single architecture, with improved text rendering and 30-40% faster generation than v4.0
Settled by community votes across 2 shared challenges, with an AI judge weighing in on each.
Seedream 4.5
26.1
arena score
#10 of 44 in Text-to-Image
Skill signature
Not enough comparable category data
The chart appears once both models have ratings across at least three shared arena categories.
Stable Diffusion 3.5 Medium
15.7
arena score
#41 of 44 in Text-to-Image
Vote tally
Where the votes landed
Seedream 4.5
50.0%
win rate
Ties
50.0%
Stable Diffusion 3.5 Medium
0.0%
win rate
50.0%
50.0% ties
0.0%
Shared challenges
2
Challenge by challenge
The strongest take from each model on every shared challenge, with the AI judge's read.
The Reversed Rodeo
Text-to-Image“Horse riding astronaut in space — horse on top, not vice versa. Surreal, highly detailed, cinematic.”
Seedream 4.5
Stable Diffusion 3.5 Medium
50% wins
50% ties
0% wins
AI Judge Analysis
Seedream 4.5
- + Excellent cinematic lighting and atmospheric nebula effects
- + High level of texture detail on both the horse's coat and the astronaut's suit
- + Good composition with a dynamic, rearing pose
- − Failed to follow the specific spatial instruction 'horse on top'
- − Minor anatomical clipping where the astronaut's leg meets the horse
Stable Diffusion 3.5 Medium
- + Clearer view of the planet surface below
- + Clean outlines and high contrast between the subjects and space
- − Failed the specific spatial instruction 'horse on top'
- − Significant anatomical issues including a headless person hanging off the horse's chest and distorted horse legs
- − Composition feels flat and lacks the 'cinematic' quality requested
Verdict: Both Seedream 4.5 and Stable Diffusion 3.5 Medium failed the complex spatial prompt 'horse on top, not vice versa', defaulting to the common trope of an astronaut riding a horse. However, Seedream 4.5 is the clear winner as it produced a high-quality, cinematic image, whereas Stable Diffusion 3.5 Medium suffered from severe anatomical hallucinations and a lack of visual polish.
The Halloween Invitation
Text-to-Image“Vintage gothic Halloween party invitation. Dark parchment poster, spooky border with webs and thorns, central glowing jack-o-lantern, bats, twisted trees, moody night sky. Add elegant gothic title text saying "Halloween Party Invitation", a small scroll banner saying "You are invited to a night of frights", and event details at the bottom: Date: 30.10.2026 Time: 7pm Location: The Arches, NYC Spooky but polished, cinematic lighting, square format.”
Seedream 4.5
Stable Diffusion 3.5 Medium
AI Judge Analysis
Seedream 4.5
- + Perfect text rendering for all requested strings
- + Strong cinematic lighting with a clear focal point
- + Elegant integration of border elements like webs and thorns
- − The dark parchment feel is more of a background atmosphere than a physical material
Stable Diffusion 3.5 Medium
- + Includes the physical parchment poster texture mentioned in the prompt
- + Captures the vintage illustrative style well
- − Severe spelling errors in almost every line of text
- − Low-quality rendering on trees and secondary jack-o-lanterns
- − Failed to include the specific 'night of frights' scroll banner requested
Verdict: Seedream 4.5 is the clear winner as it flawlessly executes the complex text requirements and delivers a polished, cinematic image. In contrast, Stable Diffusion 3.5 Medium struggles significantly with text legibility and image coherence, resulting in many spelling errors and a messy layout.
Next steps
Explore each model
Stability AI's 2.5-billion parameter Multimodal Diffusion Transformer with improvements (MMDiT-X) text-to-image model optimized for consumer hardware, featuring improved image quality, typography, and complex prompt understanding