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 6 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.
Wan 2.7 Pro
21.4
arena score
#29 of 44 in Text-to-Image
Vote tally
Where the votes landed
Seedream 4.5
100.0%
win rate
Ties
0.0%
Wan 2.7 Pro
0.0%
win rate
100.0%
0.0% ties
0.0%
Shared challenges
6
Challenge by challenge
The strongest take from each model on every shared challenge, with the AI judge's read.
Magic Burger Explosion: Fiery Photorealism Challenge
Text-to-Image“Ad for 'Magic Burger'. Dynamic, exploded burger with all components (bun, patty, cheese, lettuce, tomato, sauce) suspended in mid-air. Emphasize photorealistic detail and a sense of motion. Dark, fiery background with glowing embers. Integrate text: 'MAGIC BURGER' as a prominent title, 'LIMITED TIME ONLY' as a secondary message, and '€6.99' in a starburst, all rendered with a fiery, glowing effect.”
Seedream 4.5
Wan 2.7 Pro
100% wins
0% ties
0% wins
AI Judge Analysis
Seedream 4.5
- + Excellent photorealistic texture on the meat and bun
- + Highly dynamic motion blur on the flying vegetable slices
- + Superior integration of the 'Magic Burger' text into the fire theme
- − The burger is not truly 'exploded' as requested, remaining largely assembled
- − Missing some secondary ingredients like onions in the air
Wan 2.7 Pro
- + Perfect adherence to the 'exploded' burger request with clearly separated layers
- + Accurate rendering of all specific text elements and the starburst graphic
- + High clarity and balanced composition for a commercial ad
- − The texture looks slightly more digital/artificial compared to Model A
- − The lettuce leaf is oddly large and flat in the composition
Verdict: Wan 2.7 Pro followed the complex 'exploded burger' prompt much more accurately, creating a clear separation of ingredients that works perfectly for an advertisement. While Seedream 4.5 offers more impressive photorealistic textures and motion blur, it failed to actually explode the burger layers, keeping it mostly stacked.
Chalkboard Menu
Text-to-Image“Handwritten-style chalkboard menu in a cozy café, all text rendered in the exact same realistic chalk handwriting style with natural variations in letter size, slight slant, and chalk texture — no printed or digital fonts anywhere on the board. Title at the top in elegant cursive chalk handwriting: ‘TODAY’S SPECIALS – APRIL 30, 2026’. Below it, three menu items also in the same handwritten chalk style: ‘Truffle Mushroom Risotto – $24’, ‘Grilled Octopus with Lemon & Herbs – $28’, ‘Brown Butter Chocolate Chip Cookies – $9’. At the very bottom, smaller text in the identical handwritten chalk style (slightly smaller but still clearly legible with the same handwriting characteristics): ‘All items made fresh daily • Ask about our gluten-free options’. Warm ambient café lighting, visible chalk dust and smudges, realistic handwriting imperfections, no clean printed text anywhere.”
Seedream 4.5
Wan 2.7 Pro
AI Judge Analysis
Seedream 4.5
- + Excellent chalk texture with realistic smudging and dust effects.
- + Captures the requested natural variations in letter size and slant perfectly.
- + Realistic wooden frame and cafe background depth.
- − Repeats the price '$24' unnecessarily on two lines for the first item.
- − Slightly less 'elegant' cursive in the title compared to what might be expected.
Wan 2.7 Pro
- + Perfect text accuracy for all requested menu items and prices.
- + Very clean, legible layout with consistent stylistic choices.
- + Good integration of the board into a cozy rustic environment.
- − The text looks a bit too digital/uniform, lacking the gritty chalk texture requested.
- − The 'handwriting' feels more like a stylized digital font than actual chalk on a board.
Verdict: Seedream 4.5 captures the 'chalk' aesthetic much better than Wan 2.7 Pro, featuring realistic pressure variations, dust, and authentic handwriting quirks despite a small repetition in the text. Wan 2.7 Pro is more accurate with the text itself, but the letters look too much like a clean digital font, failing the prompt's requirement for a realistic chalk texture.
Pose & Character Mashup
EditingEdit instruction
“Use Image 1 as the exact pose reference and Image 2 as the character reference. Recreate the person/character from Image 2 in the exact dynamic pose and body position from Image 1. Keep the exact face, hair, clothing style/details, and expression from Image 2. Match the lighting and environment of Image 1. The final image must show the character from Image 2 performing the precise action/pose from Image 1 with perfect anatomy and natural integration.”
Source
Seedream 4.5
Wan 2.7 Pro
AI Judge Analysis
Seedream 4.5
- + Excellent character preservation including sunglasses, scarf, and specific clothing graphics.
- + Accurately maps the subject's face and body to the complex pose in Image 1.
- + Maintains lighting and background consistency from the source pose image.
- − The right foot is rendering with slightly unnatural toe placement on the ottoman.
- − Small artifact on the left wrist area.
Wan 2.7 Pro
- + Perfectly preserves the original environment and subject of Image 1.
- − Completely failed the edit instruction to change the character to the subject of Image 2.
- − No visible changes were made to the source image.
Verdict: Seedream 4.5 successfully performed a complex character transfer, placing the man from Image 2 into the exact difficult pose of Image 1 while maintaining his specific clothing and accessories. Wan 2.7 Pro failed the task entirely, simply returning a copy of Image 1 with no modifications.
Outfit Transfer Challenge
EditingEdit instruction
“Use Image 1 as the base person. Dress them in the exact elaborate outfit from Image 2 (including all layers, accessories, jewelry, and shoes). Carefully adapt the clothing to the body shape and pose in Image 1 while maintaining realistic fabric behavior, correct proportions, and perfect lighting/shadow matching. Keep the person’s exact face, hair, and background completely unchanged.”
Source
Seedream 4.5
Wan 2.7 Pro
AI Judge Analysis
Seedream 4.5
- + Excellent adherence to the specific clothing layers, including the navy coat, plaid scarf, gold watch, and ring from Image 2.
- + Maintains the subject's face and hair perfectly from Image 1.
- + Seamless integration of shadows and lighting on the new clothing.
- − The shirt is oddly cropped or transparent in the center, showing the torso skin in a way that doesn't match the original outfit's construction.
- − The subject's right arm (viewer's left) disappears into the jacket pocket somewhat unnaturally.
Wan 2.7 Pro
- + Successfully keeps the person's face and the general background from Image 1.
- + Includes shoes as requested by the prompt.
- − Completely failed to use the outfit from Image 2, instead generating a random gold-patterned blazer.
- − Changes the subject's pose completely, failing to use Image 1 as the 'base' pose.
- − The hand detail is poor, with distorted fingers.
Verdict: Seedream 4.5 followed the complex instructions much more accurately, successfully transferring the specific coat, scarf, and jewelry from Image 2 onto the subject while preserving the face and hair of Image 1. Wan 2.7 Pro failed the core task by generating an entirely different outfit and changing the pose, which was explicitly forbidden in the prompt.
The Capybara Taxi Driver
Text-to-Image“Photorealistic scene inside a yellow New York taxi at night. A capybara is driving, wearing a yellow taxi driver cap and a dark jacket. It has a calm, professional expression and both front paws on the steering wheel. In the back seat sits a human businesswoman in a coat, looking at her phone with a completely normal, bored expression (as if this is just another normal ride). Through the windows you can see the streets of Manhattan at night with blurred lights. Realistic taxi interior, photorealistic, detailed fur and fabric, 35mm lens, night lighting with reflections, shallow depth of field.”
Seedream 4.5
Wan 2.7 Pro
AI Judge Analysis
Seedream 4.5
- + Excellent adherence to the requested front-facing composition showing both the driver and the passenger behind him
- + Highly realistic textures on the capybara's fur and the jacket
- + Clear and accurate rendering of the 'TAXI' text on the cap
- − The capybara's front paws look slightly more like human hands/fingers than actual webbed capybara paws
Wan 2.7 Pro
- + Uses a more authentic chauffeur-style hat as opposed to a generic baseball cap
- + Strong sense of motion with the blurred street lights in the background
- − Fails the prompt instructions by placing the human passenger in the front seat instead of the back seat
- − Anatomical issues with the capybara's hands appearing long and primate-like
- − The passenger's hair and face have slight digital artifacts/blurring
Verdict: Seedream 4.5 followed all elements of the prompt perfectly, including the specific placement of the passenger in the back seat and a clear front-on perspective. Wan 2.7 Pro placed the passenger in the front seat, directly contradicting the prompt, and featured more unsettling primate-like hands on the capybara.
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
Wan 2.7 Pro
AI Judge Analysis
Seedream 4.5
- + Excellent cinematic lighting and atmosphere matches the 'moody' and 'spooky' vibe well.
- + Photorealistic textures on the pumpkin and background elements create high visual clarity.
- + Text is perfectly legible with high contrast against the background.
- − Misses the 'parchment' texture requested in the prompt.
- − The 'thorns' part of the border looks like modern barbed wire instead of natural thorny vines.
Wan 2.7 Pro
- + Perfectly adheres to the 'parchment' and 'vintage' aesthetic with a detailed illustrative style.
- + Excellent integration of the border, including thorns, webs, and gothic motifs.
- + Comprehensive adherence to all prompt details including the scroll banner and specifically requested text.
- − The font for the date and location is a bit plain compared to the gothic title.
- − Less 'cinematic' lighting than Model A, appearing more as a flat 2D illustration.
Verdict: Both models followed the complex text instructions perfectly, which is impressive. Seedream 4.5 creates a high-impact cinematic image with realistic lighting, but Wan 2.7 Pro captures the specific 'vintage gothic parchment' aesthetic much more accurately. Wan 2.7 Pro is the winner for its superior composition, decorative border details, and adherence to the requested material texture.
Next steps
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Alibaba's Wan 2.7 Pro image generation and editing model with higher-quality outputs and support for 4K image generation