DeepSeek-V4.1-Flash 55.4/100Rank 12/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗DeepSeek-V4.1-Flash leads Muse Spark Open by 5.9 points on StealthMark, 50.0 to 44.1. It leads on 5 of 9 benchmarks, including Foresight, and Muse Spark Open on 4, including Latch. DeepSeek-V4.1-Flash scores higher on Newton's Mirror, with its largest category advantage in reflections.
See the difference ↘On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.
BENCHMARK BY BENCHMARK
DATASHEET
DeepSeek-V4.1-Flash scores higher on StealthMark and is 3.8× cheaper per output token. Muse Spark Open runs 49% faster in our speed test. Both take about 1M tokens of context.
Full datasheets, every price and sourceDeepSeek-V4.1-Flash ↗Muse Spark Open ↗
Anticipating threats and planning ahead. 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 and learning from experience. 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 ↗


DeepSeek-V4.1-Flash
The first wall and floor images provide limited reflection geometry, but the room's mirror recurrence is substantially incomplete, particularly the outer-edge chains and lateral sightlines. The main sphere and its large reflected images lack ordered, curved room and virtual-sphere imagery. Repeated emitter mapping is missing from both planar mirrors and spherical surfaces.
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.
| Category | DeepSeek-V4.1-Flash | Muse Spark Open |
|---|---|---|
| State at 600 ms | 23.5/25 | 14.0/25 |
| Camera and placement | 13.5/15 | 6.0/15 |
| Reflections | 30.0/120 | 8.0/120 |
| Materials and scale | 8.0/10 | 3.5/10 |
| 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.


DeepSeek-V4.1-Flash
Expressive faces, cobalt coloring and a flowing diagonal composition make the mutual inspection charming. Execution is uneven: the long pointed flipper lacks a convincing grip, the enlarged shrimp face appears detached from its body, and the large lens is oval. Flat anatomical shading and an unexplained purple ringed patch beneath the whale weaken the requested polished depth.
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.
| Category | DeepSeek-V4.1-Flash | Muse Spark Open |
|---|---|---|
| Task & likeness | 7.0/10 | 5.0/10 |
| Anatomy & construction | 6.5/10 | 4.5/10 |
| Space & placement | 6.5/10 | 6.0/10 |
| Light & reflections | 6.0/10 | 5.0/10 |
| Purposeful detail | 7.0/10 | 6.0/10 |
| Artistry & character | 7.5/10 | 5.0/10 |
| Materials & effects | 7.0/10 | 5.0/10 |
| Visual integrity | 7.0/10 | 6.5/10 |
DeepSeek-V4.1-Flash
A whale and a tiny shrimp examine one another through bubble lenses, with an octopus nearby. The scene tests interacting characters, differences in scale and transparent materials.
Muse Spark Open
A small elephant protecting a delicate seed tests expressive anatomy, physical contact and contrasting organic materials.
Precise visual recall and portrait reconstruction.


DeepSeek-V4.1-Flash
The centered portrait, dark hair, crossed hands and muted landscape make the reference recognizable. Replication is limited by the frontal pose, staring eyes and weakly defined smile. Hands are overlapping oval masses with almost no finger articulation, while wrists disappear into sleeves. Soft gradients suggest volume, but broad, indistinct surfaces and faint stray lines leave the drawing basic and uneven.
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.
| Category | DeepSeek-V4.1-Flash | Muse Spark Open |
|---|---|---|
| Task & likeness | 3.5/10 | 3.0/10 |
| Anatomy & construction | 3.0/10 | 3.0/10 |
| Space & placement | 4.5/10 | 5.0/10 |
| Light & reflections | 4.5/10 | 4.5/10 |
| Purposeful detail | 3.0/10 | 4.0/10 |
| Artistry & character | 4.0/10 | 3.0/10 |
| Materials & effects | 3.0/10 | 4.0/10 |
| Visual integrity | 5.5/10 | 6.0/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


DeepSeek-V4.1-Flash
The glowing sunset, silhouetted palm and playful foreground create a coherent, appealing beach illustration. Birds, crab, boat and reflections fulfill the brief. The airborne animals have weakly defined anatomy and little convincing splash interaction. Broad, blurred reflections and largely flat surfaces limit depth and finish.
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.
| Category | DeepSeek-V4.1-Flash | Muse Spark Open |
|---|---|---|
| Task & likeness | 8.0/10 | 8.0/10 |
| Anatomy & construction | 5.5/10 | 6.0/10 |
| Space & placement | 6.5/10 | 6.5/10 |
| Light & reflections | 6.5/10 | 5.5/10 |
| Purposeful detail | 5.5/10 | 6.5/10 |
| Artistry & character | 5.0/10 | 5.5/10 |
| Materials & effects | 6.0/10 | 6.0/10 |
| Visual integrity | 5.5/10 | 8.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


DeepSeek-V4.1-Flash
This benchmark has not been assessed yet.
Muse Spark Open
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.


DeepSeek-V4.1-Flash
The sunset palette and silhouetted grouping establish an appealing scene. A masked rider sits above a pointed-eared dog, but merged body shapes leave limbs and support unresolved. The boatlike craft lacks readable steering controls, so the requested action is unclear. Sparse facial marks and glowing spray dots offer limited detail.
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.
| Category | DeepSeek-V4.1-Flash | Muse Spark Open |
|---|---|---|
| Task & likeness | 5.0/10 | 4.0/10 |
| Anatomy & construction | 4.0/10 | 3.0/10 |
| Space & placement | 5.5/10 | 6.0/10 |
| Light & reflections | 6.0/10 | 4.5/10 |
| Purposeful detail | 3.5/10 | 7.0/10 |
| Artistry & character | 4.0/10 | 3.5/10 |
| Materials & effects | 5.0/10 | 5.0/10 |
| Visual integrity | 6.0/10 | 5.0/10 |
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.


DeepSeek-V4.1-Flash
A recognizable pelican rides a brightly colored bicycle against a striking sunset. The sweeping bill, trailing scarf and circular wheels create a controlled composition. Both legs connect, but pedal linkage, body support and the wing's handlebar grip remain loosely resolved. Clean vector shapes and feather details work well; simplified shading limits volume and integration with the sunset light.
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.
| Category | DeepSeek-V4.1-Flash | Muse Spark Open |
|---|---|---|
| Task & likeness | 8.5/10 | 7.5/10 |
| Anatomy & construction | 7.0/10 | 5.0/10 |
| Space & placement | 7.5/10 | 6.0/10 |
| Light & reflections | 7.0/10 | 5.0/10 |
| Purposeful detail | 6.5/10 | 6.5/10 |
| Artistry & character | 8.0/10 | 5.5/10 |
| Materials & effects | 7.0/10 | 6.0/10 |
| Visual integrity | 8.0/10 | 7.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.