FLUX.2 [pro] vs Seedream 4.0
Head-to-head across 14 challenges
FLUX.2 [pro]
63.2%
win rate
Ties
0.0%
Seedream 4.0
36.8%
win rate
Challenge Results
Man and Car in California
Editing“Make a photo of the man driving the car down the California coastline”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent preservation of the source car's details and reflections.
- + Accurately represents the man's face and distinctive hairstyle from the source.
- + High visual clarity and realistic motion blur on the wheels.
- − The driver's position is slightly high relative to the seat.
- − Minor lighting inconsistency on the driver compared to the bright outdoor sun.
Seedream 4.0
- + Successfully incorporates the man's scarf and coat from the source image.
- + Great composition with the winding California coastline in the background.
- + Dynamic pose with hands realistically placed on the steering wheel.
- − The driver's face is less sharp and looks slightly morphed compared to the source.
- − Noticeable warping of the car's body, especially around the rear wheel and trunk line.
Verdict: Both models did an excellent job of merging two different source images into a cohesive scene. FLUX.2 [pro] is the winner because it maintained much higher fidelity to the source car's geometry and the man's facial features, whereas Seedream 4.0 introduced significant structural warping to the vehicle's rear and lost some facial detail.
Geometric Composition
Text-to-Image“A glass cube on a wooden table. Inside the cube is a small blue sphere. On top of the cube sits a red book. A green plant is behind the cube, partially visible through the glass. Soft window light from the left.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent photorealism and texture on the book and wooden table.
- + Perfect logical execution of the glass cube's structure and reflections.
- + Accurate lighting direction following the prompt's request.
- − The plant is significantly further in the background and less 'behind the cube' than requested.
- − The sphere is quite small compared to the cube's volume.
Seedream 4.0
- + Better placement of the plant directly behind the glass as requested in the prompt.
- + Vibrant colors and a high-gloss finish on the blue sphere.
- + Good adherence to all spatial instructions.
- − The glass cube geometry is slightly warped on the right side.
- − The lighting is a bit harsh, creating a less 'soft' feel than requested.
- − The table texture is slightly less realistic than Model A.
Verdict: Both models followed the complex spatial prompt very well. FLUX.2 [pro] produced a more professional, photorealistic image with superior glass physics, while Seedream 4.0 followed the specific placement of the green plant behind the glass more accurately. FLUX.2 [pro] is the winner due to its higher visual fidelity and more natural lighting.
Candid Street Photography
Text-to-Image“A candid street photo of an elderly Japanese man repairing a red bicycle in light rain, reflections on wet pavement, shallow depth of field, 50mm lens, natural skin texture, imperfect framing, motion blur from passing cars, cinematic but realistic, no stylization.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent skin texture and hyper-realistic facial details
- + Accurate shallow depth of field and bokeh
- + Superior bicycle mechanical details and texture
- − The motion blur of the passing car is very subtle compared to the request
- − Composition is very tight, clipping a significant portion of the bike
Seedream 4.0
- + Captures the motion blur of the passing car much better
- + Composition feels more 'candid' and includes the full scene and tools
- + Stronger reflection in the puddle
- − Noticeable anatomical issues with the hands
- − The bike's geometry is slightly warped and inconsistent
- − Lacks the fine skin texture and sharpness of the other model
Verdict: FLUX.2 [pro] produces a much higher quality image in terms of textures, facial realism, and mechanical accuracy, though it struggles with the motion blur element of the prompt. Seedream 4.0 follows more of the prompt instructions (like the motion blur and wider candid framing) but fails significantly on detail quality, especially with the man's hands and the bike's structure. FLUX.2 [pro] is the winner for its professional-grade visual quality and realistic rendering of the subject.
Modern Clean Menu
Text-to-Image“Modern minimalist restaurant menu design, white background with colorful food photos in grid, sections for appetizers/pizza/mains, bold sans-serif fonts, vibrant accents, clean professional layout for casual dining.”
AI Judge Analysis
FLUX.2 [pro]
- + Follows the complete layout request including sections for appetizers, pizza, and mains with pricing.
- + Excellent typography with clean, legible sans-serif fonts and logical hierarchy.
- + High-quality food photography integrated into a grid that feels like a real professional menu.
- − Some minor spelling errors in the headers and item names ('MINS' instead of 'MAINS').
- − Duplicate section headers and item listings create some logical redundancy.
Seedream 4.0
- + Vibrant food photography with good color saturation.
- + Correct spelling of the requested section headers.
- − Fails to provide a functional menu layout, lacking descriptions or prices.
- − The grid composition is unbalanced with large awkward white spaces.
- − The cropping of the pizza on the right is disruptive to the minimalist aesthetic.
Verdict: FLUX.2 [pro] successfully created a professional, usable restaurant menu design that adheres to the minimalist aesthetic and grid-based layout described in the prompt. While it has some minor typos and repetitive sections, it far exceeds Seedream 4.0, which only produced a collage of images with headers and failed to provide any of the textual detail or structural balance expected of a menu.
Bald man challenge
Editing“Give the person a full, thick head of natural hair with realistic texture, density, and a natural hairline. Preserve facial features and lighting.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent realism in hair texture and flow
- + Natural integration of the hairline and temples
- + Matches the existing facial hair colors perfectly
- − Significantly altered the original beard shape and color
- − Subtly changed facial features, making the eyes look slightly different
Seedream 4.0
- + Better preservation of the original face and beard
- + High adherence to the 'full, thick head of hair' instruction
- + Maintains original lighting and skin details
- − The hair looks like a wig with an unnatural, stiff shape
- − The hairline is slightly too straight and abrupt
Verdict: FLUX.2 [pro] created a much more realistic and aesthetically pleasing head of hair, though it failed to preserve the original beard. Seedream 4.0 followed the instruction while keeping the face and beard intact, but the resulting hair looks artificial and lacks natural flow.
Night Sky Transformation
Editing“Change the scene to night: a deep, dark sky with subtle, glistening stars visible behind the mountain.”
AI Judge Analysis
FLUX.2 [pro]
- + Perfect preservation of the original town and mountain geometry
- + Realistic day-to-night conversion with appropriate ambient lighting
- + Subtle stars match the specific prompt instruction
- − The sky has a few elongated star artifacts that look like motion blur
Seedream 4.0
- + Excellent atmospheric lighting on the mountain peak
- + Beautifully rendered star clusters in the sky
- + High fidelity preservation of the foreground village
- − Slightly more global darkening which loses some detail in the grassy foreground
Verdict: Both models performed exceptionally well, maintaining the architecture and geography of the source image perfectly while realistically shifting the time of day. FLUX.2 [pro] is slightly preferred for its crisper overall image and better foreground visibility, although Seedream 4.0 produced a more aesthetically pleasing starlit sky.
Adorable Baby Animals in Sunny Meadow
Text-to-Image“Hyper-photorealistic scene of fluffy baby animals—a golden retriever puppy, tabby kitten, baby bunny, and red fox kit—with big expressive eyes and ultra-detailed soft fur, playfully chasing butterflies and tumbling together in a lush wildflower meadow, warm golden sunrise light with god rays and dew sparkles, joyful wholesome vibe, 8K masterpiece.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent light interaction and rim lighting on the fur.
- + High consistency in the textures of the meadow and dew drops.
- + Very clean anatomy for the animals included.
- − Failed to include the baby bunny requested in the prompt.
- − The kitten's stripes look slightly artificial/uniform.
Seedream 4.0
- + Included all four requested animals (puppy, kitten, bunny, and fox kit).
- + Captures the 'tumbling together' action more dynamically.
- + Beautifully rendered god rays and sparkling dew effects.
- − The fox kit has an anatomical error with its right front leg appearing to grow out of its chest.
- − The kitten's face is slightly distorted and less photorealistic than the other animals.
Verdict: Seedream 4.0 followed the prompt more accurately by including all four requested animals, whereas FLUX.2 [pro] missed the baby bunny entirely. However, FLUX.2 [pro] produced a more polished and anatomically correct image with superior lighting, while Seedream 4.0 struggled with some physical distortions on the fox and kitten.
Over-the-top cartoon caricature
Editing“Create a caricature of me and my job. Make it exaggerated and humorous, incorporating my profession as a tv show anchor and my love for dogs and hockey.”
AI Judge Analysis
FLUX.2 [pro]
- + Expertly incorporates all three themes: TV anchor (studio desk, microphones), dogs (animated characters), and hockey (hockey sticks, pucks, rink screen).
- + Creates a coherent, vibrant cartoon caricature style that is fun and consistent.
- + Maintains the recognizable features of the woman's face from the source image within the artistic style.
- − Completely changes the background and medium, losing the 'photo' look of the original image.
- − The dogs are generic cartoon characters rather than realistic representations.
Seedream 4.0
- + Preserves the original background and setting while adding new elements.
- + Excellent caricature of the face, keeping the photographic texture while distorting features for humor.
- + Clever integration of hockey (jerseys, stick) and a news microphone while maintaining the original selfie pose.
- − The hand holding the phone is anatomically small and slightly distorted.
- − Only includes one dog, whereas the prompt implies a more general 'love for dogs' which Model A represented more broadly.
Verdict: FLUX.2 [pro] opted for a full cartoon redesign, creating a high-quality illustration that hit every single prompt requirement with great detail, but it abandoned the source image's environment. Seedream 4.0 successfully performed a photographic caricature edit, keeping the woman's actual skin textures and the original room while adding the requested props. Seedream 4.0 is the winner for better preserving the identity and 'spirit' of the original photo while still delivering a humorous and exaggerated result.
Heroic Super Hero Portrait
Text-to-Image“Hyper-photorealistic full-body portrait of a female superhero standing triumphantly on a New York skyscraper rooftop at golden sunset, wearing a classic modest superhero costume with flowing cape, chest emblem, gloves, and boots in red and blue colors, practical design, short hair, strong determined heroic expression looking into the distance, powerful confident stance with hands on hips and cape billowing dramatically in the wind, detailed urban cityscape background, warm natural sunlight with sharp shadows and fabric highlights, ultra-sharp textures on suit, hair, and concrete, 8K masterpiece, empowering family-friendly style.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent texture rendering on the suit and urban rooftop environment.
- + Superior lighting with a dramatic golden hour glow and realistic shadows.
- + Highly detailed cityscape background with clear architectural structures.
- − The cape physics feel a bit heavy and static rather than billowing naturally.
- − The character's physique is slightly stylized toward a comic-book aesthetic rather than strictly photorealistic.
Seedream 4.0
- + The cape has a more natural 'billowing' motion in the wind.
- + The lighting on the character's face feels authentic to a natural sunset.
- + Good interpretation of the 'short hair' requirement.
- − The image has lower overall resolution and sharpness compared to Model A.
- − The 'S' emblem on the chest is inconsistent and looks like a distorted version of the Superman logo.
- − Visible artifacting and lack of detail in the distant cityscape.
Verdict: FLUX.2 [pro] is the clear winner due to its exceptional clarity, realistic surface textures, and superior composition. While Seedream 4.0 captures a more dynamic movement in the cape, it suffers from lower image quality, a distorted chest emblem, and a less convincing urban background.
Neutral Expression to Genuine Smile
Editing{
"action": "image_edit",
"reference": "uploaded neutral portrait",
"change": "Warm genuine Duchenne smile: lips curved up, slight natural teeth, soft eye crinkles, subtle cheek raise",
"details": "Realistic smiling skin (dimples if present, soft cheek shadows), slightly brighter eyes; keep exact eye shape/color/iris",
"preserve_exact": "Face identity/structure, eyes/nose/lips/eyebrows, hair, skin texture/pores/freckles, makeup, clothing, head pose, background, lighting, shadows, framing",
"no_changes": "No face shape change, no new features, no gaze shift, no hair/clothing/lighting/background edits",
"style": "Ultra-photorealistic 8K portrait, sharp face focus, natural soft lighting, realistic skin glow"
}
AI Judge Analysis
FLUX.2 [pro]
- + Excellent preservation of skin texture and freckles
- + Natural Duchenne smile with eye crinkles
- + High-quality teeth rendering
- − Slightly over-smoothed forehead compared to the original
Seedream 4.0
- + Strong preservation of the source image's identity
- + Natural smile rendering with good cheek lift
- + Maintains original lighting and skin details well
- − Inner corner of the eyes is slightly less sharp than in the source image
Verdict: Both models did an exceptional job at following the instructions while maintaining the identity of the person in the source image. FLUX.2 [pro] produced a slightly more radiant smile with better-defined skin crinkles around the eyes, whereas Seedream 4.0 was slightly more conservative but equally accurate in preserving the face's structural details. FLUX.2 [pro] is chosen as the winner for the slightly better rendering of the requested 'Duchenne' characteristics.
Studio Ghibli Anime Style
Editing“Transform this photo into a Studio Ghibli–inspired illustration. Use soft pastel colors, hand-painted textures, gentle lighting, dreamy backgrounds, and a warm, nostalgic mood”
AI Judge Analysis
FLUX.2 [pro]
- + Perfectly captures the Studio Ghibli character design style with clean line art and expressive features.
- + Maintains the complex background details from the original photo while stylizing them.
- + Excellent preservation of the original poses and clothing patterns.
- − The color palette is a bit more muted/sepia than traditional vibrant Ghibli pastels.
Seedream 4.0
- + Beautiful watercolor texture that feels very hand-painted and dreamy.
- + Captures the wash-style aesthetic of Ghibli concept art.
- + Preserves the iconic composition and shapes of the original subjects.
- − Completely removes the background detail, replacing it with abstract washes.
- − The character in the red dress has slightly distorted anatomy in the face.
Verdict: FLUX.2 [pro] is the superior edit because it successfully translates the entire image, including the background architecture and crowds, into the requested art style while maintaining perfect source preservation. While Seedream 4.0 has a lovely watercolor texture, it loses all environmental context from the original photo, turning it into a character study rather than a scene transformation.
Golden Hour Stroll
Editing“Add dynamic motion to this photo: make hair blow in the wind, add leaves flying, energetic and lively feel.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent adherence to the 'hair blowing in wind' instruction with realistic strand separation.
- + Successfully added many flying leaves as requested.
- + Preserved the identity of the woman and the dog almost perfectly.
- − One large leaf is awkwardly positioned inside the dog's mouth.
- − A leaf is weirdly attached to the woman's denim jacket sleeve.
Seedream 4.0
- + Successfully applied the wind effect to the hair.
- + Added flying leaves throughout the scene.
- + Preserved the original background and dog very well.
- − Significant distortion and blurring of the woman's face compared to the source.
- − The leaves appear somewhat blotchy and less detailed than the rest of the image.
Verdict: Both models followed the instructions well, adding the requested wind-blown hair and flying leaves. FLUX.2 [pro] is the winner because it maintained the facial details and clarity of the original subject, whereas Seedream 4.0 significantly blurred and altered the woman's face and eyes.
Vintage Cafe Logo
Text-to-Image“Vintage minimalist restaurant logo for "Caffè Florian", retro cloche dome with steam and "Est. 1720" banner, classic typography, warm brown and cream tones, subtle texture on light background, vector emblem style.”
AI Judge Analysis
FLUX.2 [pro]
- + Perfect adherence to all prompt elements including the 'Est. 1720' banner and accent mark in 'Caffè'.
- + Sophisticated vector emblem style with clean lines and balanced circular composition.
- + Excellent use of subtle texture on the background and shading on the cloche.
- − The 'Est. 1720' text is slightly small compared to the main brand name.
Seedream 4.0
- + Strong, bold typography that is easy to read.
- + Good use of warm brown and cream tones with a nice hand-drawn feel.
- + Correct spelling and accent mark application.
- − The cloche and steam look a bit more like a cartoon illustration than a minimalist vector logo.
- − The 'Est. 1720' banner is slightly disconnected from the main emblem visually.
Verdict: FLUX.2 [pro] followed the prompt more precisely, creating a cohesive vector emblem that feels like a professional logo. Seedream 4.0 produced a high-quality illustration, but FLUX.2 [pro] better captured the 'minimalist' and 'vector emblem' style requested while maintaining perfect typography.
Apollo 11: Journey to Tranquility
Text-to-Image“Create a clean, modern vector infographic poster about the Apollo 11 mission. NASA-inspired palette (navy, white, muted red, light gray). Flat-vector style, crisp lines, consistent iconography, subtle gradients only. Steps (stop at landing): 1. Launch (Saturn Vicon) 2. Earth Orbit (Earth + orbit ring icon) 3. Translunar (trajectory arc icon) 4. Lunar Orbit (Moon + orbit ring icon) 5. Descent (lunar module descending icon) 6. Landing (lunar module on the surface icon) Small supporting elements (minimal text): • Crew strip: three silhouette icons with only last names: Armstrong, Aldrin, Collins. • Landing site marker: Moon pin labeled "Tranquility" only. Layout constraints: generous margins, large readable labels, clean background with subtle stars. Vector-only, print-poster look, high resolution.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent adherence to the clean, flat-vector aesthetic with sophisticated iconography.
- + Follows the NASA-inspired color palette perfectly with a professional layout.
- + Includes creative extra details like the astronaut silhouettes and specific location marking (Tranquility).
- − The placeholder text for descriptions is gibberish.
- − Merged the last two steps (Descent/Landing) into a single visual flow without distinct labels for both.
Seedream 4.0
- + Explicitly labels all six requested steps in a clear linear timeline.
- + High-quality text rendering for the main titles and labels.
- + Strong legibility and simple, icon-based communication.
- − The vector style is slightly inconsistent, with some elements appearing more like 3D renders than flat vector art.
- − Includes a gold color not requested in the palette and uses a more generic banner-style composition.
- − The Saturn V icon looks slightly distorted and lacks the precision of the other elements.
Verdict: FLUX.2 [pro] produced a much more professional and aesthetically pleasing infographic that looks like a real design piece, despite the gibberish text. Seedream 4.0 followed the specific numbering and step-by-step instructions more literally and with better legibility, but the visual style is less cohesive and the 'Launch' icon is poorly rendered. FLUX.2 [pro] is the winner for its superior composition, artistic consistency, and adherence to the requested flat-vector style.
FLUX.2 [pro]
Black Forest Labs' state-of-the-art image generation model with maximum quality and speed, supporting text-to-image and multi-reference image editing with up to 4MP output
Seedream 4.0
ByteDance's image generation model with integrated text-to-image and image editing capabilities in a unified architecture, supporting up to 4K resolution