STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Mimo V2.6 Flash vs Muse Spark Open

Muse Spark Open leads Mimo V2.6 Flash by 0.1 points on StealthMark, 44.4 to 44.3. It leads on 5 of 9 benchmarks, including both games, and Mimo V2.6 Flash on 4. Muse Spark Open scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

44.3/100Overall rank 27/50
44.4/100Overall rank 26/50

General Intelligence

40.0/100
42.6/100

Visual Intelligence

50.1/100
47.5/100

BENCHMARK BY BENCHMARK

Where each model leads

  • Mimo V2.6 Flash
  • Muse Spark Open
  • Other models
  • Median

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.

Mimo V2.6 Flash71.3/100Rank 33/431 of 3 levels

1 of 3 levels played
Foresight: complete playing field
Level 212 ptsTurn 14 / 18

Muse Spark Open29.4/100Rank 31/43

Survived 0 of 3 levels
Foresight: complete playing field
Level 38 ptsTurn 15 / 20

Points per level

LevelMimo V2.6 FlashMuse Spark Open
Level 1Second Thoughts
Pending
4 ptsOut of lives
Level 2Pressure Pot
12 ptsOut of lives
9 ptsOut of lives
Level 3Hide or Flight
Not played
8 ptsOut of lives

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.

Mimo V2.6 Flash67.8/100Rank 32/432 of 5 levels

2 of 5 levels played
Latch: complete playing field
Level 29.6 ptsTurn 21 / 24

Muse Spark Open75.7/100Rank 11/43

Cleared 5 of 5 levels
Latch: complete playing field
Level 519.6 ptsTurn 32 / 40

Points per level

LevelMimo V2.6 FlashMuse Spark Open
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.6 ptsCleared
9.8 ptsCleared
Level 3Relay vault
Pending
19.2 ptsCleared
Level 4Passing bay
Pending
17.8 ptsClearedFinished early · 1 beacon left
Level 5Second thoughts
Not played
19.6 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

Mimo V2.6 Flash

The faint lower sphere image provides limited reflection evidence through reversed paint-color ordering. The wider reflection system and nested room imagery are absent. The colored beads do not resolve the required impact and transport history, while displaced paint positions and weak material rendering further limit the result.

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.

Score breakdown

CategoryMimo V2.6 FlashMuse Spark Open
State at 600 ms8.0/2519.0/25
Camera and placement4.5/156.0/15
Reflections6.5/1208.0/120
Materials and scale2.5/103.5/10
Floor-damage reward0.0/100.0/10

Benchmark task

A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.

Selfie

Different task instructions

Visual construction and creative interpretation.

The judgment

Mimo V2.6 Flash

The centered rabbit has an appealing alert expression, a balanced silhouette, and a restrained technological palette. Outfit panels and orbital accents are cleanly resolved. The orb-holding paw has an ambiguous grip, the ears lack distinct angular bends, and the halo's interlocking construction is unclear. Soft shading suggests volume, but materials and spatial depth remain simplified.

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.

Score breakdown

CategoryMimo V2.6 FlashMuse Spark Open
Task & likeness8.0/105.0/10
Anatomy & construction6.5/104.5/10
Space & placement7.0/106.0/10
Light & reflections7.0/105.0/10
Purposeful detail6.0/106.0/10
Artistry & character5.5/105.0/10
Materials & effects6.5/105.0/10
Visual integrity8.0/106.5/10

Benchmark task

Mimo V2.6 Flash

A small rabbit in an explorer outfit floats with a luminous orb. The scene tests character anatomy, pose and the placement of geometric forms around it.

Muse Spark Open

A small elephant protecting a delicate seed tests expressive anatomy, physical contact and contrasting organic materials.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Mimo V2.6 Flash

The dark clothing, long hair, folded hands and hazy landscape make the reference recognizable. Replication is limited by the frontal symmetry, elongated face, wide staring eyes and downturned mouth. Both arms connect to the hands, but the overlapping palms and looplike fingers are poorly resolved. Soft facial shading provides some volume; the clothing and landscape remain broad, simplified shapes.

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.

Score breakdown

CategoryMimo V2.6 FlashMuse Spark Open
Task & likeness3.0/103.0/10
Anatomy & construction2.5/103.0/10
Space & placement4.0/105.0/10
Light & reflections3.0/104.5/10
Purposeful detail4.0/104.0/10
Artistry & character2.5/103.0/10
Materials & effects3.5/104.0/10
Visual integrity5.5/106.0/10

Benchmark task

An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.

Beach

Different task instructions

Creativity, perspective and visual beauty.

The judgment

Mimo V2.6 Flash

The warm sunset, aligned reflection, framing palms and playful beach animals create an appealing, coherent scene. Small toys and shells remain readable. Drawing is simplified: animals have limited volume, water uses repetitive horizontal strokes, and foreground shadows do not consistently follow the central sun. Clean execution supports a competent illustration, but depth and material rendering remain modest.

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.

Score breakdown

CategoryMimo V2.6 FlashMuse Spark Open
Task & likeness7.5/108.0/10
Anatomy & construction6.5/106.0/10
Space & placement7.0/106.5/10
Light & reflections6.0/105.5/10
Purposeful detail7.0/106.5/10
Artistry & character6.0/105.5/10
Materials & effects6.0/106.0/10
Visual integrity8.0/108.0/10

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

Ground Truth

Same task instructions

Physical reasoning, light and visual reconstruction.

The judgment

Mimo V2.6 Flash

This benchmark has not been assessed yet.

Muse Spark Open

This benchmark has not been assessed yet.

Benchmark task

A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.

Raccoon

Different task instructions

Scene composition and interacting subjects.

The judgment

Mimo V2.6 Flash

The raccoon riding the dog reads clearly, with expressive faces and a cheerful waterscape. The steering action is weak: no paw reaches the handlebar, which meets the dog's muzzle. The vehicle resembles a thin board with a steering post. Overlapping limbs obscure anatomy, while limited shadows, reflections and surface modeling keep the scene flat.

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.

Score breakdown

CategoryMimo V2.6 FlashMuse Spark Open
Task & likeness6.5/105.5/10
Anatomy & construction4.5/104.0/10
Space & placement6.0/105.5/10
Light & reflections4.5/104.0/10
Purposeful detail5.0/107.0/10
Artistry & character4.0/104.0/10
Materials & effects5.5/104.5/10
Visual integrity7.0/105.0/10

Benchmark task

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.

Pelican

Different task instructions

Subject construction and spatial relationships.

The judgment

Mimo V2.6 Flash

The pelican is immediately recognizable, with an expressive eye and prominent pouch, and the landscape provides clear framing. Clean outlines and spokes support the cheerful illustration. Both feet visibly miss the bicycle's pedal mechanism, weakening the riding action. Simplified machinery, shallow depth and loosely directional shading limit the requested masterpiece quality.

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.

Score breakdown

CategoryMimo V2.6 FlashMuse Spark Open
Task & likeness8.0/107.5/10
Anatomy & construction5.5/105.0/10
Space & placement7.0/106.0/10
Light & reflections6.0/105.0/10
Purposeful detail7.0/106.5/10
Artistry & character6.5/105.5/10
Materials & effects5.5/106.0/10
Visual integrity7.5/107.5/10

Benchmark task

A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.