STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Muse Spark Open vs MiniMax M3.1 Flash (early version)

MiniMax M3.1 Flash (early version) leads Muse Spark Open by 1.4 points on StealthMark, 45.5 to 44.1. It leads on 7 of 9 benchmarks, including Foresight, and Muse Spark Open on 2, including Latch. Space Bunny Alpha scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
Model guide ↗

Overall StealthMark

44.1/100Overall rank 29/53
45.5/100Overall rank 26/53

General Intelligence

42.6/100
35.7/100

Visual Intelligence

46.6/100
64.4/100

Reasoning efficiency

On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.

Single-step reasoning Result quality weighed against reasoning tokens on a single problem

Multi-step reasoning Result quality weighed against reasoning tokens across connected steps, as in agentic workflows

  • Muse Spark Open
  • MiniMax M3.1 Flash (early version)

Open or local

BENCHMARK BY BENCHMARK

Where each model leads

  • Muse Spark Open
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median

DATASHEET

Specs and pricing

Muse Spark Open runs 20% faster in our speed test. MiniMax M3.1 Flash (early version) scores higher on StealthMark.

  • Muse Spark Open
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median
PricePer 1M output tokens, input below
Muse Spark Open: $4.25$1.25 inputMiniMax M3.1 Flash (early version): No list price
Context windowTokens per request, max output below
Muse Spark Open: 1M1M max outputMiniMax M3.1 Flash (early version): Not published
Output speedTokens per second, our measurement
Muse Spark Open: 36120% fastertokens/sMiniMax M3.1 Flash (early version): 300tokens/s
SizeTotal and active parameters
Muse Spark Open: 816B42B activeMiniMax M3.1 Flash (early version): Not disclosed
Developer
MetaNot published
Released
15 Oct 2026Not published
Origin
United StatesNot published
Input → output
Text, image, audio, video → textNot published
Architecture
Sparse mixture-of-experts Transformer with perception encoders; 62 decoder layers, 256 experts with 8 selected per token, grouped-query attention and sliding-window/full-attention layers.Not published

Full datasheets, every price and sourceMuse 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.

Muse Spark Open 29.4/100Rank 34/47

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

MiniMax M3.1 Flash (early version) 35.8/100Rank 24/47

Survived 0 of 3
Foresight: complete playing field
Level 38 ptsTurn 19 / 20

Points per level

LevelMuse Spark OpenMiniMax M3.1 Flash (early version)
Level 1Second Thoughts
4 ptsOut of lives
16 ptsOut of lives
Level 2Pressure Pot
9 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
8 ptsOut of lives
8 ptsOut of lives

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.

Muse Spark Open 75.7/100Rank 12/48

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

MiniMax M3.1 Flash (early version) 34.4/100Rank 32/48

Cleared 3 of 5
Latch: complete playing field
Level 512.6 ptsTurn 17 / 40

Points per level

LevelMuse Spark OpenMiniMax M3.1 Flash (early version)
Level 1Hold the door
5.2 ptsCleared
5 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9 ptsCleared
Level 3Relay vault
19.2 ptsCleared
16.2 ptsClearedFinished early · 3 beacons left
Level 4Passing bay
17.8 ptsClearedFinished early · 1 beacon left
10.4 ptsFinished early
Level 5Second thoughts
19.6 ptsCleared
12.6 ptsFinished early

Newton's Mirror

Same task instructions

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

MiniMax M3.1 Flash (early version) 24.9/100 Rank 33/53

Space Bunny Alpha: Newton's Mirror SVG benchmark
29 Sep onwardResult details ↗

The judgment

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.

MiniMax M3.1 Flash (early version)

Visible panel shapes, curved sphere highlights, rounded side images and a lower continuation beneath the large left image establish recognizable local mirror structure. Their uneven arrangement, missing receding chains and absent nested imagery remain substantial shortcomings. The main sphere's framing is close, but black lacks projected separation and cyan does not establish recent apex contact.

Score breakdown

CategoryMuse Spark OpenMiniMax M3.1 Flash (early version)
State at 600 ms14.0/2511.0/25
Camera and placement6.0/159.0/15
Reflections8.0/12015.5/120
Materials and scale3.5/107.5/10
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.

MiniMax M3.1 Flash (early version) 78.9/100 Rank 3/53

Space Bunny Alpha: Selfie SVG benchmark
29 Sep onwardResult details ↗

The judgment

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.

MiniMax M3.1 Flash (early version)

The expressive rabbits, lavender moon and diagonal ring create an appealing storybook composition with nearly all requested features. Glossy eyes and pearly highlights work well. The helmet leaves the towering ears unenclosed, the reaching arm has little joint definition, and the spread boots suggest hovering more clearly than pushing off. Repeated scalloped fur marks and broad gradients limit material depth; purple edge halos soften otherwise controlled silhouettes.

Score breakdown

CategoryMuse Spark OpenMiniMax M3.1 Flash (early version)
Task & likeness5.0/108.5/10
Anatomy & construction4.5/107.5/10
Space & placement6.0/107.5/10
Light & reflections5.0/108.0/10
Purposeful detail6.0/108.0/10
Artistry & character5.0/108.0/10
Materials & effects5.0/107.5/10
Visual integrity6.5/108.0/10

Benchmark task

Muse Spark Open

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

MiniMax M3.1 Flash (early version)

An astronaut rabbit reaches for a carrot above a small moon while a younger companion peeks into view. The scene tests expressive characters, spatial relationships and material detail.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

MiniMax M3.1 Flash (early version) 49.9/100 Rank 13/53

Space Bunny Alpha: Mona Lisa SVG benchmark
29 Sep onwardResult details ↗

The judgment

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.

MiniMax M3.1 Flash (early version)

The dark clothing, folded hands and muted landscape make the reference recognizable. Replication is limited by the broad frontal face, oversized head, explicit smile and simplified landscape. Arms connect coherently, but overlapping hands lack convincing finger construction. Soft gradients suggest volume and atmospheric depth; clothing folds and facial features remain schematic.

Score breakdown

CategoryMuse Spark OpenMiniMax M3.1 Flash (early version)
Task & likeness3.0/104.5/10
Anatomy & construction3.0/105.0/10
Space & placement5.0/105.5/10
Light & reflections4.5/106.0/10
Purposeful detail4.0/104.0/10
Artistry & character3.0/105.0/10
Materials & effects4.0/104.5/10
Visual integrity6.0/105.5/10

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.

MiniMax M3.1 Flash (early version) 67.8/100 Rank 20/53

Space Bunny Alpha: Beach SVG benchmark
29 Sep onwardResult details ↗

The judgment

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.

MiniMax M3.1 Flash (early version)

A cheerful, coherent beach illustration with a strong sunset focal point, varied animals and readable small accessories. Connected flamingo legs and grounded foreground objects support the scene. Construction remains schematic, especially the airborne marine animal; its jump lacks clear water displacement. The sun reflection is effective but geometrically rigid, while shadows and material textures provide limited depth.

Score breakdown

CategoryMuse Spark OpenMiniMax M3.1 Flash (early version)
Task & likeness8.0/108.5/10
Anatomy & construction6.0/106.0/10
Space & placement6.5/106.0/10
Light & reflections5.5/107.0/10
Purposeful detail6.5/106.5/10
Artistry & character5.5/106.5/10
Materials & effects6.0/106.0/10
Visual integrity8.0/107.5/10

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.

MiniMax M3.1 Flash (early version) 42.7/100 Rank 22/53

Space Bunny Alpha: Ground Truth SVG benchmark
29 Sep onwardResult details ↗

The judgment

Muse Spark Open

This benchmark has not been assessed yet.

MiniMax M3.1 Flash (early version)

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

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.

MiniMax M3.1 Flash (early version)

The raccoon clearly rides on the dog's back, and the dog's paws reach a connected steering assembly. Expressive faces, controlled outlines and layered mountains make an appealing illustration. The seated anatomy and hull geometry are simplified, while the sunset has little corresponding reflection or directional shading. Curved spray conveys motion, although several splash ribbons look decorative.

Score breakdown

CategoryMuse Spark OpenMiniMax M3.1 Flash (early version)
Task & likeness4.0/108.0/10
Anatomy & construction3.0/107.5/10
Space & placement6.0/107.5/10
Light & reflections4.5/106.5/10
Purposeful detail7.0/107.5/10
Artistry & character3.5/107.0/10
Materials & effects5.0/107.0/10
Visual integrity5.0/108.5/10

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.

MiniMax M3.1 Flash (early version) 68.0/100 Rank 21/53

Space Bunny Alpha: Pelican SVG benchmark
29 Sep onwardResult details ↗

The judgment

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.

MiniMax M3.1 Flash (early version)

The large pouched bill clearly identifies the pelican, and the balanced bicycle silhouette makes the action readable. Attached legs reach the crank area, but overlapping feet and crank lines leave pedal contact ambiguous. Consistent wheel scale, clean contours and a restrained coastal palette support an appealing composition. Lighting and surface treatment remain simple and mostly flat.

Score breakdown

CategoryMuse Spark OpenMiniMax M3.1 Flash (early version)
Task & likeness7.5/107.5/10
Anatomy & construction5.0/106.5/10
Space & placement6.0/107.5/10
Light & reflections5.0/106.5/10
Purposeful detail6.5/107.0/10
Artistry & character5.5/105.5/10
Materials & effects6.0/106.5/10
Visual integrity7.5/107.5/10

Benchmark task

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