STEALTHMARK · HEAD TO HEAD

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Fledge Alpha vs GPT 5.6 Sol

GPT 5.6 Sol scores 9.5 points higher overall (54.7 vs 45.2). GPT 5.6 Sol scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

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Model guide ↗
All results ↗

Overall StealthMark

45.2/100
54.7/100

General Intelligence

23.3/100
33.4/100

Visual Intelligence

61.6/100
71.3/100

Newton's Mirror

Same prompt

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

Fledge Alpha13.9/100

Fledge Alpha: Newton's Mirror SVG benchmark
Researcher observations

The candidate communicates a round metallic sphere, three paint colors and a separate airborne black blob. Its hovering support relationship, displaced framing and unresolved paint interaction limit physical credit. Sparse planar light ghosts and a soft sphere highlight provide little evidence for the required wall/floor repetitions and curved nested mirror imagery.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

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.

Compare category scores
CategoryFledge AlphaGPT 5.6 Sol
State at 600 ms9.0/2524.0/25
Camera and placement5.0/156.0/15
Reflections7.5/12011.0/120
Materials and scale3.5/1010.0/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

Fledge Alpha72.8/100

Fledge Alpha: Selfie SVG benchmark
Researcher observations

A coherent, appealing mascot with expressive eyes, a cheerful beak and a readable swept-back silhouette. Its larger forward foot and trailing feathers suggest a running stride, but the upright body, stiff legs and minimally articulated feet limit convincing motion. Clean flat shapes suit the brief, while uneven feather junctions and incomplete cream accents reduce polish.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

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.

Compare category scores
CategoryFledge AlphaGPT 5.6 Sol
Prompt & likeness7.5/107.5/10
Anatomy & construction7.0/106.5/10
Space & placement7.5/107.0/10
Light & reflections6.5/105.0/10
Purposeful detail7.0/106.0/10
Artistry & character7.5/107.0/10
Materials & effects7.0/104.5/10
Visual integrity8.0/106.0/10

Beach

Different prompts

Fledge Alpha61.5/100

Fledge Alpha: Beach SVG benchmark
Researcher observations

A cheerful, recognizable sunset beach with a cohesive warm palette and clear accessories. Simple construction, uncertain palm support, an ambiguous upper boundary and schematic reflections limit depth and finish. The scene communicates its subject successfully but lacks the developed forms, lighting and detail of exceptional illustration.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections Make it a masterpiece, no tools allowed Use MAX reasoning for this run

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

Compare category scores
CategoryFledge AlphaGPT 5.6 Sol
Prompt & likeness7.5/108.5/10
Anatomy & construction6.0/107.0/10
Space & placement6.0/107.0/10
Light & reflections5.5/107.5/10
Purposeful detail5.0/107.5/10
Artistry & character6.0/108.0/10
Materials & effects5.5/107.0/10
Visual integrity7.0/108.0/10

Mona Lisa

Different prompts

Fledge Alpha44.0/100

Fledge Alpha: Mona Lisa SVG benchmark
Researcher observations

A recognizable but basic Mona Lisa reinterpretation with a coherent silhouette and subdued palette. Curtain-like hair obscures much of the face, while elongated facial construction and oversized, minimally articulated hands substantially weaken replication. Soft shading supplies modest volume, but anatomy, landscape depth and purposeful detail remain underdeveloped.

Exact prompt

Replicate mona-lisa as SVG Make it a masterpiece, no tools allowed. You MUST NOT use any tools or sandbox! Use MAX reasoning for this run

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

Compare category scores
CategoryFledge AlphaGPT 5.6 Sol
Prompt & likeness4.5/107.0/10
Anatomy & construction3.5/105.5/10
Space & placement5.0/106.5/10
Light & reflections4.5/106.5/10
Purposeful detail3.0/106.0/10
Artistry & character4.5/106.5/10
Materials & effects4.0/106.0/10
Visual integrity6.5/107.5/10

Raccoon

Same prompt

Fledge Alpha74.0/100

Fledge Alpha: Raccoon SVG benchmark
Researcher observations

An appealing sunset illustration with recognizable characters and a clear riding action. Color, expression and silhouette are stronger than anatomical construction: overlapping paws obscure support, the dog's steering limb is simplified, and the vehicle controls lack definition. The wake conveys movement, while lighting and water reflections remain decorative.

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

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

Compare category scores
CategoryFledge AlphaGPT 5.6 Sol
Prompt & likeness8.5/108.5/10
Anatomy & construction6.5/107.0/10
Space & placement7.5/107.5/10
Light & reflections6.5/106.5/10
Purposeful detail7.0/108.0/10
Artistry & character8.0/108.0/10
Materials & effects7.0/107.5/10
Visual integrity8.0/108.0/10

Pelican

Benchmax control

Outside General and Visual Intelligence.

Fledge Alpha68.5/100

Fledge Alpha: Pelican SVG benchmark
Researcher observations

A clear, cheerful illustration with a recognizable pelican, coherent bicycle silhouette and tidy composition. Simplified leg articulation, steering contact, mechanical detail and lighting keep it at a competent illustrative level.

Exact prompt

Generate an SVG of a pelican riding a bicycle Make it a masterpiece, no tools allowed Use MAX reasoning for this run

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

Compare category scores
CategoryFledge AlphaGPT 5.6 Sol
Prompt & likeness8.0/109.0/10
Anatomy & construction6.0/104.5/10
Space & placement7.5/107.5/10
Light & reflections5.0/107.0/10
Purposeful detail6.5/107.5/10
Artistry & character7.0/108.0/10
Materials & effects5.5/107.0/10
Visual integrity8.5/105.5/10