STEALTHMARK · HEAD TO HEAD

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GPT 5.6 Sol vs Owl Alpha

GPT 5.6 Sol scores 13.9 points higher overall (54.7 vs 40.8). GPT 5.6 Sol scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

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Overall StealthMark

54.7/100
40.8/100

General Intelligence

33.4/100
23.0/100

Visual Intelligence

71.3/100
52.4/100

Newton's Mirror

Same prompt

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

GPT 5.6 Sol28.3/100

GPT 5.6 Sol: Newton's Mirror SVG benchmark
Researcher observations

The central sphere and paint ordering are supported, but a frontal, centrally converging chamber replaces the required corner perspective. The first wall and floor images have incorrect placement and scale relationships. Sparse reflection cues remain, while continuous outer chains, open lateral sightlines, dense planar light sequences and curved nested spherical imagery are largely missing.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Owl Alpha18.6/100

Owl Alpha: Newton's Mirror SVG benchmark
Researcher observations

Cyan lies on the sphere's facing middle rather than showing its recent interaction near the apex. Separate airborne black and elongated crimson support part of the timing sequence. Small side images and an overlapping lower image provide limited reflection ordering, but recursive room structure, nested imagery and emitter mappings are largely absent. The main sphere is smaller and higher in the frame than prescribed, and the surfaces have a soft, matte appearance.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryGPT 5.6 SolOwl Alpha
State at 600 ms24.0/2514.5/25
Camera and placement6.0/158.0/15
Reflections11.0/1205.0/120
Materials and scale10.0/106.0/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

GPT 5.6 Sol64.5/100

GPT 5.6 Sol: Selfie SVG benchmark
Researcher observations

Six evenly spaced lobes, outward-facing heads and a clear central hexagon establish the requested knot. The ivory silhouette is controlled, but broad crossing bands resemble rigid strips, shading provides limited muscular volume, and repetitive scale lines extend across black loop openings. Small oval heads have readable eyes and mouths but limited anatomical character or moist surface detail.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Owl Alpha62.0/100

Owl Alpha: Selfie SVG benchmark
Researcher observations

Amber slit eyes, a pointed beak, cream feathers and gold-trimmed black clothing establish the secretive owl rogue. The head appears frontal rather than lowered, with much of the face exposed. The centered silhouette is effective, but stiff cloak geometry, shallow facial modeling and extremely dark clothing limit depth and finish. Sparse gold markings suggest the requested circuitry only loosely.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryGPT 5.6 SolOwl Alpha
Prompt & likeness7.5/107.0/10
Anatomy & construction6.5/106.0/10
Space & placement7.0/106.0/10
Light & reflections5.0/105.5/10
Purposeful detail6.0/106.0/10
Artistry & character7.0/106.5/10
Materials & effects4.5/105.5/10
Visual integrity6.0/106.5/10

Beach

Different prompts

GPT 5.6 Sol75.8/100

GPT 5.6 Sol: Beach SVG benchmark
Researcher observations

The purple-to-gold sunset, framing palms and varied beach activities create an appealing, coherent illustration. The sun’s reflection establishes a clear focal path. Figures and animals are recognizable but geometrically simplified; airborne dolphins lack convincing splashes, and the boat reflection is schematic. Clean silhouettes and playful details succeed more strongly than anatomical depth or material realism.

Exact prompt

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

Owl Alpha60.3/100

Owl Alpha: Beach SVG benchmark
Researcher observations

The sunset, palms, birds and beach animals create a cheerful, readable scene. Clean silhouettes and a vivid sky establish the composition, but construction remains schematic. The right palm appears rooted in open water, shadows have limited connection to the sunset, and the sun’s reflection consists of rigid bands. Small creatures and beach equipment are recognizable but minimally developed.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections Make it a masterpiece You may NOT use tools, browser, image analysis. Directly output the SVG as code

Compare category scores
CategoryGPT 5.6 SolOwl Alpha
Prompt & likeness8.5/107.5/10
Anatomy & construction7.0/105.5/10
Space & placement7.0/105.5/10
Light & reflections7.5/106.0/10
Purposeful detail7.5/105.5/10
Artistry & character8.0/106.0/10
Materials & effects7.0/104.5/10
Visual integrity8.0/107.0/10

Mona Lisa

Different prompts

GPT 5.6 Sol64.0/100

GPT 5.6 Sol: Mona Lisa SVG benchmark
Researcher observations

The crossed hands, dark dress and winding landscape establish the Mona Lisa composition. Replication is limited by enlarged eyes, an elongated face and a more frontal pose. Broad gradients suggest volume, but outlined features and flattened, overlapping fingers weaken the portrait. The frame and restrained palette unify the image; visible grain adds texture without convincing painterly transitions.

Exact prompt

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

Owl Alpha32.5/100

Owl Alpha: Mona Lisa SVG benchmark
Researcher observations

The centered portrait, slight smile, overlapping hands and distant landscape suggest Mona Lisa, but replication is weak. The face has little volume, the shoulders and torso form a narrow wedge, and the hands are fingerless ovals with unresolved wrists. Broad gray background bands provide limited depth. A bright head rim and pale hands contrast with an almost featureless dark figure.

Exact prompt

Generate an SVG of mona-lisa Make it a masterpiece You may NOT use tools, browser, image analysis. Directly output the SVG as code

Compare category scores
CategoryGPT 5.6 SolOwl Alpha
Prompt & likeness7.0/104.0/10
Anatomy & construction5.5/103.0/10
Space & placement6.5/104.0/10
Light & reflections6.5/103.0/10
Purposeful detail6.0/102.0/10
Artistry & character6.5/103.0/10
Materials & effects6.0/102.0/10
Visual integrity7.5/104.0/10

Raccoon

Different prompts

GPT 5.6 Sol76.3/100

GPT 5.6 Sol: Raccoon SVG benchmark
Researcher observations

Expressive faces, bold silhouettes and layered waves make an appealing cartoon. The raccoon sits convincingly behind the dog's shoulders, and the dog's forward paw reaches the steering grip. Steering construction and seated support remain somewhat ambiguous. The glowing sunset lacks a corresponding warm reflection or consistent illumination on the riders.

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

Owl Alpha52.3/100

Owl Alpha: Raccoon SVG benchmark
Researcher observations

The raccoon is recognizable and expressive, with a clear mask and striped tail. The dog's anatomy is poorly resolved, and the flattened craft lacks convincing steering and seating. Feet extend below the hull, weakening the sense of support. An appealing palette, clean shapes and decorative water effects give the illustration some polish.

Exact prompt

SVG of a raccoon that sits on a dog's back while the dog steers a jet ski Make it a masterpiece You may NOT use tools, browser, image analysis. Directly output the SVG as code

Compare category scores
CategoryGPT 5.6 SolOwl Alpha
Prompt & likeness8.5/105.5/10
Anatomy & construction7.0/104.0/10
Space & placement7.5/104.5/10
Light & reflections6.5/105.0/10
Purposeful detail8.0/105.5/10
Artistry & character8.0/106.0/10
Materials & effects7.5/105.5/10
Visual integrity8.0/107.0/10

Pelican

Benchmax control

Outside General and Visual Intelligence.

GPT 5.6 Sol69.3/100

GPT 5.6 Sol: Pelican SVG benchmark
Researcher observations

The expressive pelican and balanced coastal composition remain appealing, but a sky-colored slit between the neck contours above the wing leaves the central anatomy incoherent. This visible construction and layering defect prevents a clean-integrity assessment. Clustered feet lack clear pedal contacts and the chain routing is schematic; lighting and water reflections remain graphic.

Exact prompt

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

Owl Alpha79.0/100

Owl Alpha: Pelican SVG benchmark
Researcher observations

A clearly recognizable pelican cycles through a well-composed coastal sunset. Warm colors, flowing scarf, feather contours and bicycle details give the illustration character. The legs connect to the body, but the farther foot's pedal contact and the wing's handlebar grip remain ambiguous. Clean vector shapes provide polish, with limited material texture and directional shading.

Exact prompt

Generate a still SVG of a pelican riding a bicycle Make it a masterpiece You may NOT use tools, browser, image analysis. Directly output the SVG as code

Compare category scores
CategoryGPT 5.6 SolOwl Alpha
Prompt & likeness9.0/108.5/10
Anatomy & construction4.5/107.0/10
Space & placement7.5/108.0/10
Light & reflections7.0/107.5/10
Purposeful detail7.5/108.0/10
Artistry & character8.0/108.5/10
Materials & effects7.0/107.0/10
Visual integrity5.5/108.5/10