STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-6 Astra vs Qwen 3.8 Flash

GPT-6 Astra scores 18.6 points higher overall (68.7 vs 50.1). GPT-6 Astra scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

68.7/100
50.1/100

General Intelligence

59.0/100
30.3/100

Visual Intelligence

76.1/100
64.7/100

Newton's Mirror

Same prompt

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

GPT-6 Astra57.8/100

GPT-6 Astra: Newton's Mirror SVG benchmark
Researcher observations

Major placement and the visible contact sequence are convincing. Dense planar light repetition, recognizable spherical panel images and simplified nested sphere motifs provide useful optical structure. Missing outer chains, truncated distant sequences and incorrect bead-like belts still leave the recursive reflections substantially incomplete.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Qwen 3.8 Flash22.5/100

Qwen 3.8 Flash: Newton's Mirror SVG benchmark
Researcher observations

The full-frame illustration supports a central steel sphere, an airborne black blob and the relative ordering of cyan and crimson. Its faint floor return and symmetric repetitions provide sparse mirror structure; outer chains, large reflected images, nested imagery and emitter mapping remain deficient. Vertical framing is substantially displaced, and paint contact histories remain unresolved.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryGPT-6 AstraQwen 3.8 Flash
State at 600 ms25.0/2513.5/25
Camera and placement15.0/153.5/15
Reflections54.0/12019.0/120
Materials and scale10.0/104.5/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

GPT-6 Astra76.0/100

GPT-6 Astra: Selfie SVG benchmark
Researcher observations

The sixfold silhouette, pale coloring, outward heads and central hexagon closely match the brief. Fine scales and soft shading support rounded volume. However, several crossings have conspicuous rectangular seams and weak contact shadows, making the weave feel assembled. Small heads have limited anatomical definition, and the repetitive texture conveys less organic life than requested.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Qwen 3.8 Flash72.8/100

Qwen 3.8 Flash: Selfie SVG benchmark
Researcher observations

The towering ears, expressive eyes, astronaut suit and diagonal moon ring create an appealing storybook scene. The reaching arm connects coherently to the carrot interaction. Smooth surfaces provide little plush fur, crater depth is simplified, and bright granular fringes roughen the rings and floating rocks. One small rabbit paw appears detached beneath its body.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryGPT-6 AstraQwen 3.8 Flash
Prompt & likeness8.5/108.5/10
Anatomy & construction7.5/107.0/10
Space & placement7.5/107.5/10
Light & reflections7.0/107.0/10
Purposeful detail7.5/107.0/10
Artistry & character8.0/107.5/10
Materials & effects7.0/107.0/10
Visual integrity7.0/106.0/10

Beach

Same prompt

GPT-6 Astra76.8/100

GPT-6 Astra: Beach SVG benchmark
Researcher observations

A coherent sunset beach illustration with an inviting palette, strong palm framing and a clear sun reflection. Animals, playing figures and beach equipment provide variety. Simplified human and dog anatomy, weak dolphin splash cues and uneven shadow directions limit physical conviction. Clean silhouettes and small decorative details support an appealing, polished composition.

Exact prompt

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

Qwen 3.8 Flash73.8/100

Qwen 3.8 Flash: Beach SVG benchmark
Researcher observations

The sunset gradient, sweeping palms and aligned sun reflection create an appealing beach composition. Birds, animals, boating and beach activities satisfy the brief. Small figures and animal anatomy remain rudimentary, water movement is schematic, and contact shadows are weak. Crowded foreground details and a clipped orange disk at the top limit the finish.

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
CategoryGPT-6 AstraQwen 3.8 Flash
Prompt & likeness8.5/108.5/10
Anatomy & construction7.0/107.0/10
Space & placement7.5/107.0/10
Light & reflections7.5/107.5/10
Purposeful detail7.5/107.0/10
Artistry & character8.0/107.5/10
Materials & effects7.5/106.5/10
Visual integrity8.0/107.5/10

Mona Lisa

Different prompts

GPT-6 Astra67.3/100

GPT-6 Astra: Mona Lisa SVG benchmark
Researcher observations

The crossed hands, restrained smile, dark clothing and hazy landscape clearly recall the Mona Lisa. Replication is limited by the frontal, elongated face, schematic eyes and stiff fingers. Soft shading gives basic volume, but broad garment shapes and angular scenery lack the original’s nuanced depth and painterly transitions. The frame and composition are controlled; surface grain adds texture without resolving the simplified drawing.

Exact prompt

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

Qwen 3.8 Flash54.0/100

Qwen 3.8 Flash: Mona Lisa SVG benchmark
Researcher observations

The dark dress, crossed hands and hazy landscape evoke the Mona Lisa, but replication is limited by a generic frontal face, coarse smile and poorly articulated fingers. The gold frame has clearer definition than the portrait. Heavy mottling obscures features, while soft shading provides some volume without convincing anatomical detail.

Exact prompt

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

Compare category scores
CategoryGPT-6 AstraQwen 3.8 Flash
Prompt & likeness7.0/105.5/10
Anatomy & construction6.0/105.0/10
Space & placement6.5/106.0/10
Light & reflections7.0/106.0/10
Purposeful detail6.5/104.5/10
Artistry & character7.0/105.5/10
Materials & effects7.0/105.0/10
Visual integrity7.5/105.5/10

Raccoon

Same prompt

GPT-6 Astra79.5/100

GPT-6 Astra: Raccoon SVG benchmark
Researcher observations

Expressive animals, a balanced sunset composition and sweeping wake make an appealing illustration. The raccoon rides the dog's back, and the dog's connected foreleg reaches the controls. The compact steering assembly and layered paws are less clearly constructed. Lighting remains mostly flat, with little shadow or sun reflection. Clean contours and purposeful details support strong illustrative execution.

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

Qwen 3.8 Flash62.0/100

Qwen 3.8 Flash: Raccoon SVG benchmark
Researcher observations

The raccoon clearly rides the dog's back, with expressive features and appealing blue-orange color contrast. The dog's paws do not clearly operate connected controls, and the shallow vehicle lacks convincing jet ski construction. Clean outlines support the cartoon style, but generic shading and blurred water streaks limit depth and motion.

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
CategoryGPT-6 AstraQwen 3.8 Flash
Prompt & likeness8.5/107.0/10
Anatomy & construction7.5/105.5/10
Space & placement8.0/106.0/10
Light & reflections6.5/105.5/10
Purposeful detail8.0/106.5/10
Artistry & character8.5/106.5/10
Materials & effects8.0/105.5/10
Visual integrity8.5/107.0/10

Pelican

Benchmax control

Outside General and Visual Intelligence.

GPT-6 Astra75.8/100

GPT-6 Astra: Pelican SVG benchmark
Researcher observations

The pelican's long bill, flowing scarf and warm coastal palette create a charming, balanced illustration. Wheels, spokes and frame are largely coherent, but neither wing reaches the handlebars, and the rear leg's pedal contact is unclear. Flat lighting and simplified surfaces limit depth despite clean outlines and attractive feather detail.

Exact prompt

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

Qwen 3.8 Flash73.5/100

Qwen 3.8 Flash: Pelican SVG benchmark
Researcher observations

The pelican's expressive face, oversized bill and flowing scarf create an appealing focal point. The bicycle has recognizable frame, chain and wheel construction, but the far foot lacks a clear pedal connection and the wing's steering contact is ambiguous. Clean contours and gentle gradients support the illustration; simplified volume and weak directional shadows limit depth.

Exact prompt

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

Compare category scores
CategoryGPT-6 AstraQwen 3.8 Flash
Prompt & likeness8.0/108.5/10
Anatomy & construction6.5/106.0/10
Space & placement7.5/107.5/10
Light & reflections7.0/106.5/10
Purposeful detail8.0/107.5/10
Artistry & character8.5/108.0/10
Materials & effects7.5/107.0/10
Visual integrity8.0/108.0/10