STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Hy4 preview vs Inkling-Small

Hy4 preview leads Inkling-Small by 16.3 points on StealthMark, 43.9 to 27.6. It leads on 8 of 9 benchmarks, including both games, and Inkling-Small on 1. Hy4 preview scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

43.9/100Overall rank 30/53
27.6/100Overall rank 43/53

General Intelligence

41.3/100
25.5/100

Visual Intelligence

48.6/100
31.1/100

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
  • Inkling-Small

Open or local

Open modelApache-2.0
Open modelApache 2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Hy4 preview
  • Inkling-Small
  • Other models
  • Median

DATASHEET

Specs and pricing

Both take about 1M tokens of context.

  • Hy4 preview
  • Inkling-Small
  • Other models
  • Median
PricePer 1M output tokens, input below
Hy4 preview: $2.50$0.83 inputInkling-Small: No list price
Context windowTokens per request, max output below
Hy4 preview: 1MTied64K max outputInkling-Small: 1MTied
Output speedTokens per second, our measurement
Hy4 preview: 64tokens/sInkling-Small: Not measured
SizeTotal and active parameters
Hy4 preview: 770B49B activeInkling-Small: 276B12B active
Developer
Tencent Hy TeamThinking Machines Lab
Released
28 Aug 2026Not published
Origin
ChinaNot published
Input → output
Text → textText, image, audio → text
Architecture
MoE; 78-layer backbone with Gated DSA, 256 routed experts + 1 shared expert, top-8 routed experts active, plus native MTP layer42-layer decoder-only transformer with sparse mixture-of-experts feed-forward (6 of 256 routed experts plus 2 shared per token); hybrid local and global attention; natively multimodal with a hierarchical patch image encoder and discrete-token audio

Full datasheets, every price and sourceHy4 preview ↗Inkling-Small ↗

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 14/49

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

Inkling-Small 30.2/100Rank 29/49

Survived 0 of 3
Foresight: complete playing field
Level 38 ptsTurn 17 / 20

Points per level

LevelHy4 previewInkling-Small
Level 1Second Thoughts
26 ptsSurvived
9 ptsOut of lives
Level 2Pressure Pot
6 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
11 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.

Hy4 preview 35.6/100Rank 33/50

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

Inkling-Small 34.7/100Rank 34/50

Cleared 3 of 5
Latch: complete playing field
Level 518 ptsTurn 40 / 40

Points per level

LevelHy4 previewInkling-Small
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
6 ptsFinished early
9.8 ptsCleared
Level 3Relay vault
18 ptsCleared
2.8 ptsFinished early
Level 4Passing bay
15.8 ptsClearedFinished early · 3 beacons left
8 ptsFinished early
Level 5Second thoughts
18.2 ptsFinished early
18 ptsCleared

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.

Inkling-Small

The sphere's apparent floor support, separate dark feature and broad paint ordering justify partial state credit. The major weakness is the largely missing mirror system: isolated side images and faint floor echoes do not establish repeated virtual rooms or curved spherical mapping. Downward framing, the oversized frontal panel, unresolved paint transport and satin surface appearance remain distinct limitations.

Score breakdown

CategoryHy4 previewInkling-Small
State at 600 ms18.0/2514.0/25
Camera and placement11.5/153.0/15
Reflections29.5/1208.0/120
Materials and scale7.5/102.5/10
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

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.

Inkling-Small

The faces and dripping caps communicate a cute mushroom scene, but simple construction and weak spatial relationships limit the result. The defining foot-stamping action is unresolved, the flattering portrait is smaller than its painter, and the requested material contrasts are only partly conveyed.

Score breakdown

CategoryHy4 previewInkling-Small
Task & likeness6.0/102.5/10
Anatomy & construction5.5/101.5/10
Space & placement7.5/103.5/10
Light & reflections7.0/103.0/10
Purposeful detail6.5/104.5/10
Artistry & character5.0/103.0/10
Materials & effects7.0/103.5/10
Visual integrity5.5/102.0/10

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.

Inkling-Small

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

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.

Inkling-Small

A recognizable but rudimentary Mona Lisa interpretation. Facial shading and subdued colors provide coherence, while the frontal blocklike torso, unresolved wrists, fingerless hands and shallow landscape substantially limit likeness, construction and finish.

Score breakdown

CategoryHy4 previewInkling-Small
Task & likeness2.5/102.5/10
Anatomy & construction2.5/102.5/10
Space & placement2.5/103.0/10
Light & reflections1.5/102.5/10
Purposeful detail2.5/102.0/10
Artistry & character1.5/102.5/10
Materials & effects2.5/102.0/10
Visual integrity4.0/103.0/10

Benchmark task

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

Beach

Same 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.

Inkling-Small

A recognizable sunset beach with a clear focal sun and appealing color transitions. Connected fish silhouettes and layered scenery establish basic coherence. Primitive figures, ambiguous recreation, sparse descriptive detail and weak grounding limit construction and depth. The aligned reflection supplies a useful lighting cue, but shadows and material effects remain underdeveloped.

Score breakdown

CategoryHy4 previewInkling-Small
Task & likeness8.5/103.5/10
Anatomy & construction5.5/103.0/10
Space & placement6.5/103.0/10
Light & reflections5.0/103.0/10
Purposeful detail6.0/103.0/10
Artistry & character5.5/103.0/10
Materials & effects5.0/102.5/10
Visual integrity6.0/102.0/10

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

Hy4 preview

This benchmark has not been assessed yet.

Inkling-Small

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

Same 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.

Inkling-Small

Recognizable animals, readable accessories and an appealing sunset support a coherent basic cartoon. Rounded construction leaves joints, riding support and steering unresolved. Decorative gradients contribute atmosphere, but directional lighting, distinct materials and convincing water displacement are weakly demonstrated.

Score breakdown

CategoryHy4 previewInkling-Small
Task & likeness7.0/104.0/10
Anatomy & construction4.0/103.0/10
Space & placement6.0/104.0/10
Light & reflections6.5/105.0/10
Purposeful detail5.5/105.5/10
Artistry & character4.5/104.0/10
Materials & effects5.5/105.0/10
Visual integrity5.0/105.0/10

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

Same 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.

Inkling-Small

The pelican is immediately recognizable, and its sweeping neck, shaped bill and orderly spokes provide character. Riding remains only partially realized: legs, pedal engagement, steering and seat support cannot be read confidently. Controlled graphic effects add atmosphere, but simplified construction and weak grounding keep the result basic.

Score breakdown

CategoryHy4 previewInkling-Small
Task & likeness7.5/104.0/10
Anatomy & construction4.5/103.0/10
Space & placement6.5/103.0/10
Light & reflections7.0/103.0/10
Purposeful detail6.0/104.5/10
Artistry & character5.0/105.0/10
Materials & effects5.0/104.5/10
Visual integrity7.0/103.0/10

Benchmark task

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