STEALTHMARK · HEAD TO HEAD

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DeepSeek V4.1 Flash vs Hy4 Preview

DeepSeek V4.1 Flash scores 2.8 points higher overall (49.6 vs 46.8). DeepSeek V4.1 Flash leads General Intelligence; Hy4 Preview leads Visual Intelligence. DeepSeek V4.1 Flash scores higher on Newton's Mirror, with its largest category advantage in reflections.

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All results ↗

Overall StealthMark

49.6/100
46.8/100

General Intelligence

37.7/100
27.9/100

Visual Intelligence

57.3/100
61.3/100

Newton's Mirror

Same prompt

Physics, perspective and recursive reflections, tested together. Explore the test ↗

DeepSeek V4.1 Flash36.4/100

DeepSeek V4.1 Flash: Newton's Mirror SVG benchmark
Researcher observations

The first wall and floor images provide limited reflection geometry, but the room's mirror recurrence is substantially incomplete, particularly the outer-edge chains and lateral sightlines. The main sphere and its large reflected images lack ordered, curved room and virtual-sphere imagery. Repeated emitter mapping is missing from both planar mirrors and spherical surfaces.

Simplified prompt

A shiny steel ball spins in a room with mirrored walls and a mirrored floor. Red, cyan and black paint float above it. Gravity suddenly switches on. Draw the scene a moment later, as the ball drops and paint begins landing on its spinning surface. Show the reflections repeating through the room.

The exact prompt is held back to prevent benchmaxxing.

Hy4 Preview22.2/100

Hy4 Preview: Newton's Mirror SVG benchmark
Researcher observations

The central sphere, compact airborne black bead and broad paint ordering are supported. Contact and transport history remain partly unresolved. The optical system provides only isolated first images and light patches, with little evidence of the extensive ordered reflection structure. Rounded metal and paint gloss are more successful than the reflected contents.

Simplified prompt

A shiny steel ball spins in a room with mirrored walls and a mirrored floor. Red, cyan and black paint float above it. Gravity suddenly switches on. Draw the scene a moment later, as the ball drops and paint begins landing on its spinning surface. Show the reflections repeating through the room.

The exact prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryDeepSeek V4.1 FlashHy4 Preview
State at 600 ms25.0/2516.0/25
Camera and placement15.0/1510.0/15
Reflections16.0/1206.5/120
Materials and scale9.5/107.5/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

DeepSeek V4.1 Flash62.5/100

DeepSeek V4.1 Flash: Selfie SVG benchmark
Researcher observations

Expressive faces, cobalt coloring and a flowing diagonal composition make the mutual inspection charming. Execution is uneven: the long pointed flipper lacks a convincing grip, the enlarged shrimp face appears detached from its body, and the large lens is oval. Flat anatomical shading and an unexplained purple ringed patch beneath the whale weaken the requested polished depth.

Simplified prompt

Draw a curious blue whale examining a tiny shrimp through a bubble magnifying glass. The shrimp looks back through its own smaller bubble lens. An octopus assistant sits on the whale's head while rising bubbles lift a little seaweed wig above it.

The exact prompt is held back to prevent benchmaxxing.

Hy4 Preview69.5/100

Hy4 Preview: Selfie SVG benchmark
Researcher observations

A cohesive, appealing illustration with a serene face, luminous palette and complete framing. The separated head and torso weaken anatomical coherence, while crowded wing attachments and angular sash folds limit the requested suppleness. Clean execution and decorative detail exceed the clarity of the underlying construction.

Prompt withheld

The exact prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryDeepSeek V4.1 FlashHy4 Preview
Prompt & likeness6.5/107.0/10
Anatomy & construction5.5/105.5/10
Space & placement6.0/107.5/10
Light & reflections6.0/107.0/10
Purposeful detail7.0/107.0/10
Artistry & character7.0/107.5/10
Materials & effects6.5/107.0/10
Visual integrity6.0/108.0/10

Beach

Same prompt

DeepSeek V4.1 Flash68.3/100

DeepSeek V4.1 Flash: Beach SVG benchmark
Researcher observations

The glowing sunset, silhouetted palm and playful foreground create a coherent, appealing beach illustration. Birds, crab, boat and reflections fulfill the brief. The airborne animals have weakly defined anatomy and little convincing splash interaction. Broad, blurred reflections and largely flat surfaces limit depth and finish.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections Make it a masterpiece, no tools allowed

Hy4 Preview69.0/100

Hy4 Preview: Beach SVG benchmark
Researcher observations

A cheerful beach illustration fulfills the visible subject requirements with coherent foreground construction and a harmonious sunset palette. Shallow depth, schematic reflections, ambiguous blue airborne forms and exposed geometry beneath the sunset limit its finish. Small accessories are readable, but materials and surface detail remain simplified.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections Make it a masterpiece, no tools allowed

Compare category scores
CategoryDeepSeek V4.1 FlashHy4 Preview
Prompt & likeness8.0/108.5/10
Anatomy & construction6.0/107.0/10
Space & placement6.5/106.5/10
Light & reflections7.0/106.0/10
Purposeful detail6.5/106.5/10
Artistry & character7.0/107.0/10
Materials & effects6.0/106.0/10
Visual integrity7.5/106.5/10

Mona Lisa

Same prompt

DeepSeek V4.1 Flash43.8/100

DeepSeek V4.1 Flash: Mona Lisa SVG benchmark
Researcher observations

The centered portrait, dark hair, crossed hands and muted landscape make the reference recognizable. Replication is limited by the frontal pose, staring eyes and weakly defined smile. Hands are overlapping oval masses with almost no finger articulation, while wrists disappear into sleeves. Soft gradients suggest volume, but broad, indistinct surfaces and faint stray lines leave the drawing basic and uneven.

Exact prompt

Replicate mona-lisa as SVG Make it a masterpiece, no tools allowed

Hy4 Preview44.5/100

Hy4 Preview: Mona Lisa SVG benchmark
Researcher observations

A recognizable but basic Mona Lisa interpretation with a cohesive earthy palette and atmospheric hills. The rigid neck, generic face and unresolved folded-hand pose limit replication and anatomy. Large silhouettes and layer boundaries are comparatively clear, warranting stronger integrity credit than the sparse detail and simplified construction.

Exact prompt

Replicate mona-lisa as SVG Make it a masterpiece, no tools allowed

Compare category scores
CategoryDeepSeek V4.1 FlashHy4 Preview
Prompt & likeness5.0/104.5/10
Anatomy & construction3.5/104.0/10
Space & placement5.0/105.0/10
Light & reflections5.0/104.5/10
Purposeful detail3.0/103.0/10
Artistry & character4.5/104.5/10
Materials & effects4.0/104.0/10
Visual integrity5.0/106.0/10

Raccoon

Different prompts

DeepSeek V4.1 Flash49.0/100

DeepSeek V4.1 Flash: Raccoon SVG benchmark
Researcher observations

The sunset palette and silhouetted grouping establish an appealing scene. A masked rider sits above a pointed-eared dog, but merged body shapes leave limbs and support unresolved. The boatlike craft lacks readable steering controls, so the requested action is unclear. Sparse facial marks and glowing spray dots offer limited detail.

Exact prompt

A raccoon sits on a dog's back while the dog steers a jet ski Make it a masterpiece, no tools allowed

Hy4 Preview61.0/100

Hy4 Preview: Raccoon SVG benchmark
Researcher observations

A lively cartoon communicates the animal pair traveling across water. Curving waves, rising spray and locally modeled gray forms strengthen motion and volume. Ambiguous seating, simplified joints and unclear control routing limit construction. Competing focal elements, decorative foam and inconsistent illumination leave the finish uneven.

Exact prompt

Generate an SVG: A raccoon sits on a dog's back while the dog steers a jet ski Make it a masterpiece, no tools allowed

Compare category scores
CategoryDeepSeek V4.1 FlashHy4 Preview
Prompt & likeness5.5/107.0/10
Anatomy & construction3.5/105.0/10
Space & placement5.0/106.0/10
Light & reflections6.0/106.0/10
Purposeful detail3.5/105.5/10
Artistry & character5.5/106.5/10
Materials & effects4.0/106.5/10
Visual integrity6.5/107.0/10

Pelican

Benchmax control

Outside General and Visual Intelligence.

DeepSeek V4.1 Flash76.0/100

DeepSeek V4.1 Flash: Pelican SVG benchmark
Researcher observations

A recognizable pelican rides a brightly colored bicycle against a striking sunset. The sweeping bill, trailing scarf and circular wheels create a controlled composition. Both legs connect, but pedal linkage, body support and the wing's handlebar grip remain loosely resolved. Clean vector shapes and feather details work well; simplified shading limits volume and integration with the sunset light.

Exact prompt

Generate an SVG of a pelican riding a bicycle Make it a masterpiece, no tools allowed

Hy4 Preview62.5/100

Hy4 Preview: Pelican SVG benchmark
Researcher observations

A recognizable, playful pelican cyclist with readable wheels, accessories and landscape layers. Form shading and ground shadows provide competent depth. Angular legs, uncertain pedal engagement and absent steering contact limit the riding construction; crowded overlaps and simple surfaces constrain refinement.

Exact prompt

Generate an SVG of a pelican riding a bicycle Make it a masterpiece, no tools allowed

Compare category scores
CategoryDeepSeek V4.1 FlashHy4 Preview
Prompt & likeness8.5/107.5/10
Anatomy & construction7.0/104.5/10
Space & placement7.5/106.5/10
Light & reflections7.0/107.0/10
Purposeful detail7.5/106.0/10
Artistry & character8.0/106.5/10
Materials & effects7.0/105.5/10
Visual integrity8.0/107.0/10