STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Hy4 preview vs MiniMax M3.1 Flash

MiniMax M3.1 Flash leads Hy4 preview by 2.0 points on StealthMark, 45.9 to 43.9. It leads on 6 of 9 benchmarks and Hy4 preview on 3, including both games. Hy4 preview scores higher on Newton's Mirror, with its largest category advantage in reflections.

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All results ↗
All results ↗

Overall StealthMark

43.9/100Overall rank 30/53
45.9/100Overall rank 24/53

General Intelligence

41.3/100
35.8/100

Visual Intelligence

48.6/100
62.6/100

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

  • Hy4 preview

Open or local

Open modelApache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Hy4 preview
  • MiniMax M3.1 Flash
  • Other models
  • Median

DATASHEET

Specs and pricing

Both take about 1M tokens of context.

  • Hy4 preview
  • MiniMax M3.1 Flash
  • Other models
  • Median
PricePer 1M output tokens, input below
Hy4 preview: $2.50$0.83 inputMiniMax M3.1 Flash: No list price
Context windowTokens per request, max output below
Hy4 preview: 1MTied64K max outputMiniMax M3.1 Flash: 1MTied
Output speedTokens per second, our measurement
Hy4 preview: 64tokens/sMiniMax M3.1 Flash: Not measured
SizeTotal and active parameters
Hy4 preview: 770B49B activeMiniMax M3.1 Flash: 428B23B active
Developer
Tencent Hy TeamMiniMax
Released
28 Aug 2026Not published
Origin
ChinaNot published
Input → output
Text → textText, image, video → text
Architecture
MoE; 78-layer backbone with Gated DSA, 256 routed experts + 1 shared expert, top-8 routed experts active, plus native MTP layerMixture-of-Experts with MiniMax Sparse Attention and native multimodal encoder

Full datasheets, every price and sourceHy4 preview ↗MiniMax M3.1 Flash ↗

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.

Hy4 preview 53.1/100Rank 14/47

Survived 1 of 3
Foresight: complete playing field
Level 311 ptsTurn 16 / 20

MiniMax M3.1 Flash 30.7/100Rank 28/47

Survived 1 of 3
Foresight: complete playing field
Level 39 ptsTurn 20 / 20

Points per level

LevelHy4 previewMiniMax M3.1 Flash
Level 1Second Thoughts
26 ptsSurvived
6 ptsOut of lives
Level 2Pressure Pot
6 ptsOut of lives
5 ptsOut of lives
Level 3Hide or Flight
11 ptsOut of lives
9 ptsSurvived

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.

Hy4 preview 35.6/100Rank 31/48

Cleared 3 of 5
Latch: complete playing field
Level 518.2 ptsTurn 19 / 40

MiniMax M3.1 Flash 21.9/100Rank 38/48

Cleared 2 of 5
Latch: complete playing field
Level 517.2 ptsTurn 24 / 40

Points per level

LevelHy4 previewMiniMax M3.1 Flash
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
6 ptsFinished early
8.6 ptsClearedFinished early · 1 beacon left
Level 3Relay vault
18 ptsCleared
5 ptsOut of turns
Level 4Passing bay
15.8 ptsClearedFinished early · 3 beacons left
4.4 ptsFinished early
Level 5Second thoughts
18.2 ptsFinished early
17.2 ptsFinished early

Newton's Mirror

Same task instructions

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

The judgment

Hy4 preview

The central sphere, compact airborne black bead and broad paint ordering are supported. Contact and transport history remain partly unresolved. The optical system provides only isolated first images and light patches, with little evidence of the extensive ordered reflection structure. Rounded metal and paint gloss are more successful than the reflected contents.

MiniMax M3.1 Flash

The sphere placement, separate airborne black blob, recent cyan contact and elongated crimson aftermath support the required gross physical state. The reflection system remains severely incomplete: isolated side images, broad metallic bands and sparse light patches replace extensive mirror repetitions and curved nested imagery.

Score breakdown

CategoryHy4 previewMiniMax M3.1 Flash
State at 600 ms18.0/2520.0/25
Camera and placement11.5/1510.0/15
Reflections29.5/12024.0/120
Materials and scale7.5/108.0/10
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.

The judgment

Hy4 preview

A cohesive, appealing illustration with a serene face, luminous palette and complete framing. The separated head and torso weaken anatomical coherence, while crowded wing attachments and angular sash folds limit the requested suppleness. Clean execution and decorative detail exceed the clarity of the underlying construction.

MiniMax M3.1 Flash

The sculptural M, confident grin and miniature theatrical pose closely fulfill the brief. Controlled gradients and clean shapes give the character volume and appeal. Moderate drawing complexity, an apparently separated shoe and ambiguous grounding limit the finish.

Score breakdown

CategoryHy4 previewMiniMax M3.1 Flash
Task & likeness6.0/107.5/10
Anatomy & construction5.5/106.0/10
Space & placement7.5/107.0/10
Light & reflections7.0/106.0/10
Purposeful detail6.5/105.0/10
Artistry & character5.0/106.0/10
Materials & effects7.0/107.0/10
Visual integrity5.5/106.0/10

Benchmark task

Hy4 preview

A young blue dragon floating among clouds tests curved anatomy, expressive features and the contrast between soft clouds and glossy surfaces.

MiniMax M3.1 Flash

A small robot with an oversized angular head presents a glowing object. The scene tests character proportions, gesture and contrasting materials.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Hy4 preview

A recognizable but basic Mona Lisa interpretation with a cohesive earthy palette and atmospheric hills. The rigid neck, generic face and unresolved folded-hand pose limit replication and anatomy. Large silhouettes and layer boundaries are comparatively clear, warranting stronger integrity credit than the sparse detail and simplified construction.

MiniMax M3.1 Flash

A coherent decorative portrait combines layered hair, garment contours, linked trim and atmospheric scenery. These provide meaningful drawing complexity, but likeness remains limited by the frontal elongated face and altered clothing. Compressed hands, abrupt facial shading and cluttered local edges leave the portrait uneven.

Score breakdown

CategoryHy4 previewMiniMax M3.1 Flash
Task & likeness2.5/104.0/10
Anatomy & construction2.5/104.5/10
Space & placement2.5/105.5/10
Light & reflections1.5/104.5/10
Purposeful detail2.5/105.5/10
Artistry & character1.5/106.0/10
Materials & effects2.5/105.5/10
Visual integrity4.0/105.5/10

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.

The judgment

Hy4 preview

A cheerful beach illustration fulfills the visible subject requirements with coherent foreground construction and a harmonious sunset palette. Shallow depth, schematic reflections, ambiguous blue airborne forms and exposed geometry beneath the sunset limit its finish. Small accessories are readable, but materials and surface detail remain simplified.

MiniMax M3.1 Flash

A controlled, detailed beach illustration with expressive animals, coherent depth and accomplished foliage and accessory drawing. Its warm palette and varied contours sustain visual interest. Simplified anatomy and object volumes limit physical conviction, while reflection streaks crossing dry-looking sand and generic shadows weaken the lighting.

Score breakdown

CategoryHy4 previewMiniMax M3.1 Flash
Task & likeness8.5/108.5/10
Anatomy & construction5.5/107.0/10
Space & placement6.5/107.5/10
Light & reflections5.0/106.0/10
Purposeful detail6.0/108.0/10
Artistry & character5.5/106.5/10
Materials & effects5.0/106.5/10
Visual integrity6.0/107.5/10

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.

The judgment

Hy4 preview

This benchmark has not been assessed yet.

MiniMax M3.1 Flash

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

Hy4 preview

A lively cartoon communicates the animal pair traveling across water. Curving waves, rising spray and locally modeled gray forms strengthen motion and volume. Ambiguous seating, simplified joints and unclear control routing limit construction. Competing focal elements, decorative foam and inconsistent illumination leave the finish uneven.

MiniMax M3.1 Flash

An expressive, coherent cartoon clearly demonstrates the requested riding and steering relationship. Layered animal shapes, readable vehicle depth and purposeful facial details support its drawing quality. Ambiguous grips, sparse cast shadows and simplified material responses limit physical precision.

Score breakdown

CategoryHy4 previewMiniMax M3.1 Flash
Task & likeness7.0/109.0/10
Anatomy & construction4.0/108.0/10
Space & placement6.0/108.0/10
Light & reflections6.5/106.0/10
Purposeful detail5.5/107.5/10
Artistry & character4.5/107.5/10
Materials & effects5.5/107.0/10
Visual integrity5.0/108.0/10

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

Hy4 preview

A recognizable, playful pelican cyclist with readable wheels, accessories and landscape layers. Form shading and ground shadows provide competent depth. Angular legs, uncertain pedal engagement and absent steering contact limit the riding construction; crowded overlaps and simple surfaces constrain refinement.

MiniMax M3.1 Flash

A controlled coastal illustration with a clear pelican silhouette, detailed wheels and accomplished feather and bill drawing. Continuous body construction and grounded wheels support the scene. Ambiguous leg, pedal and steering contacts weaken the riding mechanics; approximate directional lighting and simplified materials limit physical conviction.

Score breakdown

CategoryHy4 previewMiniMax M3.1 Flash
Task & likeness7.5/108.5/10
Anatomy & construction4.5/106.5/10
Space & placement6.5/108.0/10
Light & reflections7.0/107.0/10
Purposeful detail6.0/107.5/10
Artistry & character5.0/106.5/10
Materials & effects5.0/107.0/10
Visual integrity7.0/106.5/10

Benchmark task

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