STEALTHMARK · HEAD TO HEAD

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Qwen3.8 27B vs Union Alpha

Union Alpha scores 4.9 points higher overall (60.0 vs 55.1). Union Alpha scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms. Union Alpha’s overall score includes one estimated scene.

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Overall StealthMark

55.1/100
60.0/100Estimated · 1 missing scene

General Intelligence

38.3/100
40.9/100Partial coverage

Visual Intelligence

67.8/100
73.2/100Partial coverage

Newton's Mirror

Same prompt

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

Qwen3.8 27B33.3/100

Qwen3.8 27B: Newton's Mirror SVG benchmark
Researcher observations

The room fills the complete 16:9 frame without visible borders or labels. Central placement fits the wider frame, and the paint colors follow the expected vertical order. Bilateral side images, diminishing echoes and an overlapping floor image provide limited mirror depth. Broad sphere surfaces lack ordered nested room imagery, while planar panel sequences and outer chains remain missing or unresolved. Soft highlights do not establish emitter mapping, while paint attachment and transport history are only partly supported.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Union Alpha38.3/100

Union Alpha: Newton's Mirror SVG benchmark
Researcher observations

Recognizable near-field sphere placement and bilateral convergence provide limited optical structure. Broad gray regions interrupt lateral sightlines and truncate side-floor images. Missing outer chains, absent nested sphere imagery and incomplete planar and curved emitter mappings dominate the reflection system.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryQwen3.8 27BUnion Alpha
State at 600 ms17.5/2525.0/25
Camera and placement13.0/1515.0/15
Reflections22.5/12019.0/120
Materials and scale7.0/1010.0/10
Floor-damage reward0.0/100.0/10

Selfie

Qwen3.8 27B78.8/100

Qwen3.8 27B: Selfie SVG benchmark
Researcher observations

A cohesive emerald-and-gold illustration with a gentle expression, flowing robes, luminous halo and three clearly ringed orbs. Limbs remain connected, and the asymmetric legs communicate floating. The rounded face reads somewhat bear-like; the raised palm faces outward rather than upward, and chest-hand fingers are crowded. Clean ornamentation exceeds the comparatively simple anatomical modeling and shading.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryQwen3.8 27BUnion Alpha
Prompt & likeness8.0/10—
Anatomy & construction7.5/10—
Space & placement8.0/10—
Light & reflections7.5/10—
Purposeful detail8.0/10—
Artistry & character8.0/10—
Materials & effects7.5/10—
Visual integrity8.5/10—

Beach

Different prompts

Qwen3.8 27B78.3/100

Qwen3.8 27B: Beach SVG benchmark
Researcher observations

The sweeping palm, glowing sunset and layered shoreline create an appealing composition with abundant beach activity. Birds, animals and sun reflections satisfy the brief. Animal anatomy remains schematic, wave spacing is repetitive, and shadows and reflective surfaces offer limited physical depth. Clean silhouettes and small beach details support a strong stylized illustration.

Exact prompt

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

Union Alpha80.0/100

A beach at sunset with a palm tree, turtle, crab, birds, and a leaping dolphin.
Researcher observations

A cohesive sunset palette, sweeping shoreline and playful animals make an appealing beach illustration. The sun’s reflection establishes a clear focal axis, balanced by the palm and umbrella. Clean silhouettes and small decorative features reward inspection, though simplified anatomy, repetitive reflection bars and generic oval shadows limit volume and naturalism.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections

Compare category scores
CategoryQwen3.8 27BUnion Alpha
Prompt & likeness9.0/109.0/10
Anatomy & construction7.5/107.5/10
Space & placement7.5/108.0/10
Light & reflections7.5/107.5/10
Purposeful detail7.5/108.0/10
Artistry & character8.0/108.0/10
Materials & effects7.0/107.0/10
Visual integrity8.0/108.5/10

Mona Lisa

Different prompts

Qwen3.8 27B42.5/100

Qwen3.8 27B: Mona Lisa SVG benchmark
Researcher observations

The centered portrait, dark clothing and overlapping hands evoke the Mona Lisa, but replication is weak. The face is excessively elongated, the eyes stare broadly, and the hands reduce to rounded masses with shallow finger marks. Soft shading creates some volume, while the landscape remains indistinct. The precise gold frame is more resolved than the portrait.

Exact prompt

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

Union Alpha64.0/100

An SVG interpretation of the Mona Lisa, with folded hands and a landscape background.
Researcher observations

The centered portrait, folded hands, dark clothing and hazy landscape clearly evoke the Mona Lisa. Muted colors and soft facial shading create a coherent illustration, but replication remains schematic: the face is broad, eyes outlined, smile simplified and overlapping fingers poorly resolved. Angular landscape shapes and flat fabric limit depth and painterly richness.

Exact prompt

Replicate mona-lisa as SVG

Compare category scores
CategoryQwen3.8 27BUnion Alpha
Prompt & likeness4.5/107.0/10
Anatomy & construction4.0/106.0/10
Space & placement4.0/106.5/10
Light & reflections5.0/106.5/10
Purposeful detail3.5/105.5/10
Artistry & character4.0/106.5/10
Materials & effects4.5/105.0/10
Visual integrity5.0/107.5/10

Raccoon

Different prompts

Qwen3.8 27B70.5/100

Qwen3.8 27B: Raccoon SVG benchmark
Researcher observations

The raccoon clearly rides on the dog's back, and the dog reaches the jet ski's steering grip. Cheerful expressions, a bright palette and sweeping wake make the action readable. Anatomy and machinery remain simplified, with overlapping paws and limited seat definition. Flat lighting, sparse surface detail and broad white splash shapes limit depth and finish. A clipped gray fragment interrupts the upper-left corner.

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

Union Alpha72.0/100

A raccoon rides on a dog as the dog steers a red jet ski.
Researcher observations

Expressive animals, a readable riding arrangement and sweeping spray create an appealing cartoon. The raccoon sits convincingly on the dog's back, but the dog's paw does not clearly grip the handlebar, whose connection to the hull is unresolved. Flat lighting provides little volume or reflection. A dark rectangular strip interrupts the upper-right background.

Exact prompt

A raccoon sits on a dog's back while the dog steers a jet ski

Compare category scores
CategoryQwen3.8 27BUnion Alpha
Prompt & likeness8.5/108.0/10
Anatomy & construction7.0/106.5/10
Space & placement7.0/107.5/10
Light & reflections5.5/105.5/10
Purposeful detail6.5/107.5/10
Artistry & character7.0/108.0/10
Materials & effects6.5/107.5/10
Visual integrity7.5/107.0/10

Pelican

Benchmax control

Outside General and Visual Intelligence.

Qwen3.8 27B71.3/100

Qwen3.8 27B: Pelican SVG benchmark
Researcher observations

The pelican’s oversized bill, straw hat and flowing scarf create a distinctive focal character against a well-composed coastal sunset. Wheels and frame are readable, but the wings do not reach the steering, overlapping legs obscure separate pedal contacts, and the crank linkage is unclear. Clean vector shapes and restrained shading support an appealing illustration with limited physical depth.

Exact prompt

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

Union Alpha73.8/100

A pelican riding a teal bicycle beneath a sunny blue sky.
Researcher observations

The pelican is immediately recognizable, with an expressive face, convincing bill silhouette and appealing pastel composition. Both legs connect to feet, and the wing reaches the handlebar. Bicycle construction is less resolved: the far pedal lacks a clear crank connection and no chain is visible. Clean contours and orderly spokes support the illustration, while flat lighting and simplified surfaces limit depth.

Exact prompt

Generate an SVG of a pelican riding a bicycle

Compare category scores
CategoryQwen3.8 27BUnion Alpha
Prompt & likeness8.0/108.5/10
Anatomy & construction5.5/106.5/10
Space & placement7.0/107.5/10
Light & reflections7.0/106.0/10
Purposeful detail7.5/107.0/10
Artistry & character8.0/108.0/10
Materials & effects6.5/106.5/10
Visual integrity8.0/108.5/10