Muse Spark Open29.4/100Rank 31/43

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Qwen 3.8 Flash leads Muse Spark Open by 0.1 points on StealthMark, 44.5 to 44.4. It leads on 5 of 9 benchmarks and Muse Spark Open on 4, including both games. Muse Spark Open scores higher on Ground Truth.
See the difference ↘BENCHMARK BY BENCHMARK
Planning and learning across maze levels. Collect coins while avoiding ghosts. Ghosts move before the player each turn, and collisions cost a life. 3 levels in sequence, up to 66 turns in total. Earlier moves and outcomes carry forward, testing learning across levels.


Cooperative planning across puzzle levels. Coordinate two robots to push numbered cores onto matching sockets. Pressure plates hold doors open; moving either robot uses one turn. 5 levels in sequence, up to 152 turns in total. Earlier moves and outcomes carry forward, testing learning across levels.


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


Muse Spark Open
The airborne black blob and deformed paint support the broad contact sequence, although cyan attachment and wheel-directed transport remain partial. The sphere and black blob have substantial framing errors. The dominant limitation is the largely absent mirror system: faint wall circles and isolated highlights provide little evidence of recursive room geometry or curved nested reflections. Oversized compact paint features and diffuse material treatment further limit credit.
Qwen 3.8 Flash
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.
| Category | Muse Spark Open | Qwen 3.8 Flash |
|---|---|---|
| State at 600 ms | 19.0/25 | 16.0/25 |
| Camera and placement | 6.0/15 | 3.5/15 |
| Reflections | 8.0/120 | 9.5/120 |
| Materials and scale | 3.5/10 | 4.0/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Visual construction and creative interpretation.


Muse Spark Open
The rounded silhouette and asymmetric expression make an appealing baby elephant, supported by a quiet background and grounding shadow. The protective action remains difficult to read: forefeet cannot be confidently traced into a grip, and seed contact is crowded by fine lines. Controlled simple shapes provide charm, but limited anatomical clarity, shading and surface detail leave the execution uneven.
Qwen 3.8 Flash
A coherent, appealing fantasy illustration with disciplined framing, luminous teal accents and consistent ornament. Most requested elements are clearly present. The bear-like facial proportions, lowered resting hand, obscured bent-leg construction and limited fabric modeling constrain likeness and anatomical clarity; glow effects are attractive but weakly integrated with surrounding surfaces.
| Category | Muse Spark Open | Qwen 3.8 Flash |
|---|---|---|
| Task & likeness | 5.0/10 | 8.0/10 |
| Anatomy & construction | 4.5/10 | 7.0/10 |
| Space & placement | 6.0/10 | 8.0/10 |
| Light & reflections | 5.0/10 | 7.5/10 |
| Purposeful detail | 6.0/10 | 8.0/10 |
| Artistry & character | 5.0/10 | 7.5/10 |
| Materials & effects | 5.0/10 | 7.5/10 |
| Visual integrity | 6.5/10 | 8.5/10 |
Muse Spark Open
A small elephant protecting a delicate seed tests expressive anatomy, physical contact and contrasting organic materials.
Qwen 3.8 Flash
A floating capybara in ornate robes tests character anatomy, layered fabric and the placement of surrounding luminous forms.
Precise visual recall and portrait reconstruction.


Muse Spark Open
A recognizable, orderly interpretation with clean major contours, connected body forms and modest facial shading. Wide eyes, frontal symmetry and schematic hands limit likeness and expression. Layered scenery establishes basic depth, but shallow arm overlaps, flat clothing and sparse fine detail keep the execution basic and uneven.
Qwen 3.8 Flash
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.
| Category | Muse Spark Open | Qwen 3.8 Flash |
|---|---|---|
| Task & likeness | 3.0/10 | 5.0/10 |
| Anatomy & construction | 3.0/10 | 4.5/10 |
| Space & placement | 5.0/10 | 5.5/10 |
| Light & reflections | 4.5/10 | 5.5/10 |
| Purposeful detail | 4.0/10 | 5.5/10 |
| Artistry & character | 3.0/10 | 5.5/10 |
| Materials & effects | 4.0/10 | 5.5/10 |
| Visual integrity | 6.0/10 | 5.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


Muse Spark Open
A coherent sunset beach with readable activities, balanced framing and controlled colour transitions. Small accessories add interest, but schematic anatomy, limited surface detail, weak directional shadows and a geometric reflection constrain its finish. Most shapes and overlaps remain clean.
Qwen 3.8 Flash
Sweeping palms, coordinated sunset colors and a central reflection create an expressive beach composition with clear depth. Birds, animals and varied activities thoroughly realize the brief. Small figures and animal anatomy remain rudimentary, water movement is schematic, and contact shadows are weak. Scattered foreground details and the clipped orange disk limit the finish.
| Category | Muse Spark Open | Qwen 3.8 Flash |
|---|---|---|
| Task & likeness | 8.0/10 | 9.0/10 |
| Anatomy & construction | 6.0/10 | 7.0/10 |
| Space & placement | 6.5/10 | 8.0/10 |
| Light & reflections | 5.5/10 | 7.5/10 |
| Purposeful detail | 6.5/10 | 8.5/10 |
| Artistry & character | 5.5/10 | 8.0/10 |
| Materials & effects | 6.0/10 | 6.5/10 |
| Visual integrity | 8.0/10 | 7.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Muse Spark Open
This benchmark has not been assessed yet.
Qwen 3.8 Flash
This benchmark has not been assessed yet.
A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.
Scene composition and interacting subjects.


Muse Spark Open
Expressive faces, distinct accessories and clean color separation make the scene appealing and recognizable. Character detail is stronger than the functional construction: steering contact, limb overlaps and seating remain ambiguous. The readable hull and lively spray establish motion, while limited directional shading and simplified surfaces constrain depth and physical coherence.
Qwen 3.8 Flash
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.
| Category | Muse Spark Open | Qwen 3.8 Flash |
|---|---|---|
| Task & likeness | 5.5/10 | 7.0/10 |
| Anatomy & construction | 4.0/10 | 5.5/10 |
| Space & placement | 5.5/10 | 6.0/10 |
| Light & reflections | 4.0/10 | 5.5/10 |
| Purposeful detail | 7.0/10 | 7.0/10 |
| Artistry & character | 4.0/10 | 6.5/10 |
| Materials & effects | 4.5/10 | 5.5/10 |
| Visual integrity | 5.0/10 | 7.0/10 |
A jet-ski scene pairs a canine driver with a raccoon passenger. It tests the placement and contact of interacting subjects, along with vehicle construction.
Subject construction and spatial relationships.


Muse Spark Open
A controlled, appealing cartoon with a recognizable pelican, expressive face and clean curved forms. Feather lines, spokes and bill shading provide useful complexity. Aligned wheels and a ground shadow establish placement, but uncertain pedal contacts and obscured mechanical connections weaken support and riding action. Lighting remains loosely coordinated with the sun.
Qwen 3.8 Flash
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.
| Category | Muse Spark Open | Qwen 3.8 Flash |
|---|---|---|
| Task & likeness | 7.5/10 | 8.5/10 |
| Anatomy & construction | 5.0/10 | 8.0/10 |
| Space & placement | 6.0/10 | 7.5/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 6.5/10 | 7.5/10 |
| Artistry & character | 5.5/10 | 8.0/10 |
| Materials & effects | 6.0/10 | 7.0/10 |
| Visual integrity | 7.5/10 | 8.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.