STEALTHMARK · HEAD TO HEAD

All comparisons ↗

MiniMax M3.1 Flash (early version) vs Step 5 Preview

MiniMax M3.1 Flash (early version) leads Step 5 Preview by 6.5 points on StealthMark, 45.5 to 39.0. It leads on 7 of 9 benchmarks, including Foresight, and Step 5 Preview on 2, including Latch. Step 5 Preview scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
Model guide ↗
All results ↗

Overall StealthMark

45.5/100Overall rank 26/53
39.0/100Overall rank 36/53

General Intelligence

35.7/100
37.1/100

Visual Intelligence

64.4/100
41.9/100

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

  • MiniMax M3.1 Flash (early version)

BENCHMARK BY BENCHMARK

Where each model leads

  • MiniMax M3.1 Flash (early version)
  • Step 5 Preview
  • Other models
  • Median

DATASHEET

Specs and pricing

  • MiniMax M3.1 Flash (early version)
  • Step 5 Preview
  • Other models
  • Median
Context windowTokens per request, max output below
MiniMax M3.1 Flash (early version): Not publishedStep 5 Preview: 1M
Output speedTokens per second, our measurement
MiniMax M3.1 Flash (early version): 300tokens/sStep 5 Preview: Not measured
SizeTotal and active parameters
MiniMax M3.1 Flash (early version): Not disclosedStep 5 Preview: 600B27B active
Developer
Not publishedStepFun
Input → output
Not publishedText, image, video → text
Architecture
Not publishedSparse mixture-of-experts; 92 layers (88 MoE), 352 routed experts with 8 selected per token plus a shared expert; grouped-query attention with 512-token sliding windows and full attention every fourth layer; 3 multi-token-prediction layers; vision tower for image and video input

Full datasheets, every price and sourceStep 5 Preview ↗

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.

MiniMax M3.1 Flash (early version) 35.8/100Rank 25/49

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

Step 5 Preview 59.9/100Rank 42/491 of 3 levels

1 of 3 played
Foresight: complete playing field
Level 122 ptsTurn 28 / 28

Points per level

LevelMiniMax M3.1 Flash (early version)Step 5 Preview
Level 1Second Thoughts
16 ptsOut of lives
22 ptsSurvived
Level 2Pressure Pot
6 ptsOut of lives
Pending
Level 3Hide or Flight
8 ptsOut of lives
Pending

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.

MiniMax M3.1 Flash (early version) 34.4/100Rank 35/50

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

Step 5 Preview 40.7/100Rank 28/50

Cleared 4 of 5
Latch: complete playing field
Level 515 ptsTurn 35 / 40

Points per level

LevelMiniMax M3.1 Flash (early version)Step 5 Preview
Level 1Hold the door
5 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9 ptsCleared
9 ptsCleared
Level 3Relay vault
16.2 ptsClearedFinished early · 3 beacons left
18.6 ptsCleared
Level 4Passing bay
10.4 ptsFinished early
15.6 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
12.6 ptsFinished early
15 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

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.

Step 5 Preview

The main sphere, airborne black and small colored features occupy broadly appropriate positions. Most of the defining mirror system is absent, and paint interaction remains only partially supported. The small paint features do not visibly establish a separate volume-scale violation.

Score breakdown

CategoryMiniMax M3.1 Flash (early version)Step 5 Preview
State at 600 ms11.0/2520.0/25
Camera and placement9.0/1513.5/15
Reflections15.5/12020.0/120
Materials and scale7.5/107.0/10
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

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.

Step 5 Preview

A charming diagonal climber and warm palette communicate the central idea. Simple rounded construction, crowded limb counting, uncertain footholds and an unattached upper shelf limit its physical coherence. Growth bands and the yarn trail add specificity, but the requested material distinctions and unravelled bootie remain underdeveloped.

Score breakdown

CategoryMiniMax M3.1 Flash (early version)Step 5 Preview
Task & likeness8.5/106.0/10
Anatomy & construction7.5/104.5/10
Space & placement7.5/105.0/10
Light & reflections8.0/105.5/10
Purposeful detail8.0/105.5/10
Artistry & character8.0/105.0/10
Materials & effects7.5/106.0/10
Visual integrity8.0/105.0/10

Benchmark task

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.

Step 5 Preview

Character scenes test expression, anatomy, materials and coherent visual construction.

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

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.

Step 5 Preview

A recognizable, coherent simplification with purposeful facial contours and differentiated fingers. These provide more construction and detail than the broad silhouette alone suggests. The oversized face, frontal seated pose, unresolved wrists and sparse landscape still substantially limit likeness, depth and finish.

Score breakdown

CategoryMiniMax M3.1 Flash (early version)Step 5 Preview
Task & likeness4.5/104.0/10
Anatomy & construction5.0/104.0/10
Space & placement5.5/104.0/10
Light & reflections6.0/103.5/10
Purposeful detail4.0/104.0/10
Artistry & character5.0/104.0/10
Materials & effects4.5/103.0/10
Visual integrity5.5/103.5/10

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

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.

Step 5 Preview

A recognizable sunset beach with clear warm-cool contrast and playful accessories. Basic animal construction, shallow foreground placement and schematic reflections limit spatial and physical credibility. Sparse descriptive detail and abruptly ended sky bands constrain the finish.

Score breakdown

CategoryMiniMax M3.1 Flash (early version)Step 5 Preview
Task & likeness8.5/104.0/10
Anatomy & construction6.0/103.0/10
Space & placement6.0/103.5/10
Light & reflections7.0/103.5/10
Purposeful detail6.5/103.0/10
Artistry & character6.5/103.0/10
Materials & effects6.0/103.5/10
Visual integrity7.5/104.0/10

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.

MiniMax M3.1 Flash (early version) 42.7/100 Rank 21/53

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

The judgment

MiniMax M3.1 Flash (early version)

This benchmark has not been assessed yet.

Step 5 Preview

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

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.

Step 5 Preview

Recognizable animals, a bright palette and identifying accessories support a basic cartoon. Primitive anatomy, partial seated support, unresolved steering and weak hull-water contact limit the central action. Lighting and spray provide atmosphere without establishing convincing physical depth.

Score breakdown

CategoryMiniMax M3.1 Flash (early version)Step 5 Preview
Task & likeness8.0/104.0/10
Anatomy & construction7.5/104.5/10
Space & placement7.5/103.0/10
Light & reflections6.5/103.5/10
Purposeful detail7.5/104.0/10
Artistry & character7.0/103.5/10
Materials & effects7.0/103.0/10
Visual integrity8.5/103.0/10

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.

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

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

The judgment

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.

Step 5 Preview

The pelican and bicycle are recognizable, with a pleasant palette and basic diffuse shading. The riding relationship fails physically: the bird is unsupported, the front wheel is unmounted, and pedalling is unresolved. Simple geometric construction and sparse material treatment further limit the drawing.

Score breakdown

CategoryMiniMax M3.1 Flash (early version)Step 5 Preview
Task & likeness7.5/103.0/10
Anatomy & construction6.5/103.0/10
Space & placement7.5/103.0/10
Light & reflections6.5/103.0/10
Purposeful detail7.0/104.0/10
Artistry & character5.5/103.0/10
Materials & effects6.5/103.0/10
Visual integrity7.5/102.0/10

Benchmark task

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