FLUX.2 [dev] Flash fal vs FLUX.2 [flex] Black Forest Labs

FLUX.2 [dev] Flash

• + Excellent photographic realism with natural textures and dust on the glass
• + Highly accurate lighting and reflections that react to the surrounding environment
• + Perfect adherence to all spatial relationships in the prompt

• − The glass cube is slightly weathered/dusty, which might be less 'clean' than some users prefer

FLUX.2 [flex]

• + Clean, minimalist aesthetic
• + Follows all prompt instructions regarding object placement

• − Lighting and reflections look artificial and plastic-like
• − The blue sphere appears matte and lacks the depth of the glass sphere in the first image
• − Lower detail level on the book and table textures

FLUX.2 [dev] Flash

• + Excellent preservation of the man's specific clothing (plaid coat, black scarf, hairstyle).
• + High level of detail in the car interior, including wood grain dash and leather seats.
• + Strong sense of motion and perspective from the driver's POV.

• − The car model was changed significantly from the source RR Phantom to a different vintage-style convertible.
• − The man's face is slightly obscured compared to the source.

FLUX.2 [flex]

• + Perfectly preserves the specific car model from the source image, including the white paint and grill.
• + Successfully places the car and man in a clear California coastline setting.
• + Captures the motion of the wheels effectively.

• − Failed to preserve the man's clothing, replacing his outfit with a simple shirt.
• − The man's facial features and hair are less distinct than the source.

FLUX.2 [dev] Flash

• + Excellent adherence to the 'motion blur from passing cars' prompt.
• + Highly realistic skin texture and elderly features.
• + Detailed bicycle components and believable wet pavement reflections.

• − The bike's kickstand and tools on the ground are slightly distorted.
• − The composition is a bit centered despite the request for imperfect framing.

FLUX.2 [flex]

• + Strong 'candid' feel with more dynamic 'imperfect' framing.
• + Beautiful bokeh and lighting in the background.
• + Good natural skin texture on the man's hands and face.

• − The motion blur on the cars is much less pronounced than requested.
• − The bicycle's anatomy is slightly simplified and less detailed than Image A.

FLUX.2 [dev] Flash

• + Excellent depiction of multiple small beads within complex braids
• + Highly realistic skin texture and lifelike eyes
• + Exceptional detail on the engraved plate armor and worn leather straps

• − The blood/scars feel a bit more like surface paint than deep tissue wounds

FLUX.2 [flex]

• + Strong 'paladin' themes with the cross-like engravings on the armor
• + Very clear and sharp scar details on the face
• + Good use of bokeh sparks and warm lighting

• − The braids and beads are a bit thicker and less detailed than Image A
• − The armor reflects light in a slightly more plastic-like way than real metal

FLUX.2 [dev] Flash

• + Excellent adherence to the 'vibrant accents' request with colorful borders and bars
• + Clever use of a grid layout for food photography
• + Includes specific pricing and logical section headers

• − Text rendering is messy with many garbled characters and overlapping elements
• − The top header contains repetitive and nonsensical words like 'CASSUAL5' and 'PRESTURVANT'

FLUX.2 [flex]

• + Much cleaner typography with recognizable words like 'Bruschetta' and 'Margherita Pizza'
• + More professional aesthetic that feels like a real usable template
• + Better variety of food photography representing different menu categories

• − The layout is slightly imbalanced with a large 'Appetizers' header and empty space below it
• − The grid structure is less uniform than requested

FLUX.2 [dev] Flash

• + Excellent text integration with a consistent fiery glow effect.
• + Clean and professional-looking 'exploded' layout.
• + Realistic product photography lighting on the burger components.

• − The 'exploded' effect feels a bit static compared to the particles in the other model.
• − The background is slightly more generic.

FLUX.2 [flex]

• + Stronger sense of motion with flying crumbs and more dynamic embers.
• + Vibrant, high-contrast colors make the ad pop.
• + The fiery text effect is very intense and matches the theme perfectly.

• − The '€6.99' starburst text is less refined, with a slight black stroke that breaks the glow effect.
• − The bottom bun looks a bit messy with the sauce drips.

FLUX.2 [dev] Flash

• + Excellent adherence to the handwritten prompt with realistic chalk texture
• + Accurately rendered all requested text including the truncated 'Brown But...' as a logical menu item
• + Very realistic café background with natural lighting and depth of field

• − The pricing for the cookies is repetitive ($9 listed twice)

FLUX.2 [flex]

• + Beautiful chalkboard lighting and composition
• + Consistent and elegant cursive-leaning handwriting style
• + Followed all text prompts correctly including the completion of the cookie item

• − The chalk texture on the letters looks slightly more uniform and less 'grainy' than Image A

FLUX.2 [dev] Flash

• + Excellent preservation of character details including the scarf pattern and sunglasses.
• + Accurately replicates the stool and yellow background from Image 1.
• + Reasonable attempt at the arm positioning.

• − Failed to remove the woman from Image 1, resulting in a disturbing hybrid anatomy with hair growing out of the man's side.
• − Anatomy of the lower body is broken and nonsensical, failing to capture the cross-legged pose.

FLUX.2 [flex]

• + Successfully removed the original person from Image 1 and replaced them completely with the character from Image 2.
• + Maintains character consistency including clothing, scarf, and facial features.
• + Anatomy is much more coherent than the competitor, despite pose deviations.

• − Failed to replicate the 'exact dynamic pose' from Image 1, changing the leaning torso and leg cross into a crouch.
• − The left hand is poorly rendered with an extra digit and merged fingers.

FLUX.2 [dev] Flash

• + High visual clarity and realistic lighting on the astronaut suit.
• + Cinematic composition with a shallow depth of field against the planetary backdrop.

• − Failed the negative constraint; the astronaut is riding the horse, not the other way around.

FLUX.2 [flex]

• + Perfect adherence to the complex instruction of the horse being on top of the astronaut.
• + Strong surreal aesthetic with vibrant colors and a dynamic pose.
• + High level of detail in the horse's musculature and the background nebula.

• − Anatomy of the transition between the horse's hooves and the astronaut's hands is slightly cluttered.

FLUX.2 [dev] Flash

• + Excellent photorealistic texture on the capybara's fur
• + Accurate depiction of a bored, focused expression on the passenger
• + Comes from a cinematic front-facing angle that highlights both subjects well

• − The passenger appears to be sitting in a middle seat or merging with the driver's side
• − The steering wheel placement is slightly awkward relative to the capybara's body

FLUX.2 [flex]

• + Strong composition with a clear separation between front and back seats
• + Includes a more detailed and realistic dashboard and taxi interior
• + Proper placement of both paws on the steering wheel from a side profile

• − The passenger's scale seems slightly small compared to the front seat environment
• − The lighting inside the car is a bit too bright for a night scene

FLUX.2 [dev] Flash

• + Excellent atmospheric lighting and detailed background scenery.
• + Very crisp and readable main title text.
• + Detailed thorny border that integrates well with the theme.

• − Includes a line of gibberish text (Burk: 03696) that was not in the prompt.

FLUX.2 [flex]

• + Follows the 'dark parchment poster' requirement more literally with torn edges.
• + Clean, accurate text rendering without extraneous characters.
• + Good use of negative space for an invitation layout.

• − The jack-o-lantern and trees are slightly less detailed than in the competing image.
• − The parchment background has a slightly flatter, less cinematic look.

FLUX.2 [dev] Flash

• + Excellent preservation of the source background
• + Perfectly maintains the lighting and shadows of the original subject
• + Follows the prompt for 'full, thick' hair quite literally

• − The hair type (textured afro) feels slightly disconnected from the man's beard texture
• − The hair volume is arguably exaggerated for a 'natural' look

FLUX.2 [flex]

• + Highly realistic hair texture that matches the beard style
• + Very natural hairline integration with the forehead
• + Excellent preservation of the facial features and original lighting

• − Slight shift in saturation/contrast compared to the source image
• − The hair is a bit short compared to the prompt's request for a 'full' head of hair

FLUX.2 [dev] Flash

• + Perfect text rendering and placement next to the flag
• + High-quality realistic PBR textures on the wood and fish
• + Excellent 45-degree isometric perspective

• − The sushi design is slightly unusual with fish draped over a roll-style base

FLUX.2 [flex]

• + Clean aesthetic with a professional-looking rounded diorama base
• + Variety of sushi types included (nigiri and maki)
• + Accurate flag icon rendering

• − The text is not 'top-center' as requested, but rather centered over the whole image
• − The fish textures appear more like plastic/clay than realistic PBR materials

FLUX.2 [dev] Flash

• + Excellent preservation of the subject's facial features and likeness in the caricature style.
• + Cleverly merges the TV set and hockey rink environments.
• + High level of detail in the dogs wearing hockey gear.

• − The 'TV SHOW' text is a bit generic and simple.
• − Slightly less 'humorous' and more of a standard digital illustration style.

FLUX.2 [flex]

• + Strong caricature energy with highly exaggerated expressions and 'big head' style.
• + Incorporates many dogs in hockey jerseys, which aligns well with the 'love for dogs' prompt.
• + Preserves the denim jacket from the source image as a nice detail.

• − The facial likeness to the original woman is significantly diminished compared to the other model.
• − Text on the news desk ('THeIANAes NEWS') is garbled and nonsensical.
• − The dogs look very generic/clip-art style compared to the main character.

FLUX.2 [dev] Flash

• + Excellent depiction of dew sparkles and golden hour lighting.
• + Highly detailed fur texture on all animals.
• + Expressive and biologically distinct eyes for each animal.

• − Included an extra fifth animal (a hybrid cat/rabbit) in the foreground.
• − The animals are somewhat static and crowded together.

FLUX.2 [flex]

• + Successfully captured the 'tumbling' and 'chasing' action requested in the prompt.
• + Correct count of animals as specified (puppy, kitten, bunny, fox).
• + Great use of depth perception and environmental lighting/god rays.

• − The fox's front leg has a slightly awkward anatomical join.
• − The kitten's facial structure is a bit less realistic compared to the other animals.

FLUX.2 [dev] Flash

• + Successfully captures the requested dreamy background with soft lighting and flowers
• + Excellent preservation of the subjects' poses and expressions, particularly the side-eye from the woman on the right
• + Rich watercolor-style textures that align with high-end Ghibli concept art

• − Replaces the urban setting with a field of flowers, losing the 'distracted boyfriend in the city' context

FLUX.2 [flex]

• + Accurately transforms the background into a hand-painted Ghibli-style city street, preserving the original scene's environment
• + Stronger adherence to the specific Ghibli character design style with simpler line work
• + Excellent color palette that feels nostalgic and warm

• − Loses the crucial angry expression of the woman on the right, making her look happy instead
• − The face of the man is slightly less expressive than in the original source

FLUX.2 [dev] Flash

• + Successfully added a large volume of falling leaves.
• + Preserved the identity and pose of the subject and dog very well.
• + Hair edit is symmetrical and matches the wind direction of the leaves.

• − The leaves look like a flat overlay and lack motion blur.
• − Some leaves appear to be floating unnaturally in front of the subject's clothing without shadows.

FLUX.2 [flex]

• + The hair movement looks more natural and less perfectly symmetrical than the other model.
• + The leaves have a slight motion blur that suggests speed.
• + Excellent preservation of the original source image's lighting and colors.

• − Fewer leaves were added compared to the prompt's likely intent for an 'energetic' feel.
• − The dog's tail has a slight artifact where the motion was added.

FLUX.2 [dev] Flash

• + Excellent typography adherence including the specific grave accent on the letter E.
• + Beautiful distressed texture that fits the 'vintage' prompt perfectly.
• + Complex and balanced vector emblem style with a professional banner design.

• − The 'Est. 1720' text is placed below the banner rather than inside it as one might expect from a banner prompt.

FLUX.2 [flex]

• + Successfully includes 'Est. 1720' inside the banner as requested.
• + Very clean, minimalist aesthetic that leans more towards a modern vector logo.
• + Accurate text rendering and prompt following for the specific brand name.

• − Lacks the 'subtle texture' requested, appearing a bit too digital and clean.
• − The line work on the cloche is slightly thin compared to the heavy typography, creating a slight visual imbalance.

FLUX.2 [dev] Flash

• + Includes all six requested steps and extra details like the crew and landing site.
• + Adheres strictly to the requested color palette (navy, white, muted red, gray).
• + Images of the lunar module and Earth are highly detailed or realistic.

FLUX.2 [flex]

• + Closer adherence to the requested 'flat-vector style' with clean, minimalist iconography.
• + Excellent text rendering and typography that feels like a professional infographic.
• + Balanced, vertical layout that clearly distinguishes the mission phases.

• − Misses the final 'Landing' step requested in the prompt.
• − The 'Lunar Orbit' and 'Descent' steps are slightly out of sequential order in the layout.