STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Cat Jam Free vs Hy4 preview

Hy4 preview leads Cat Jam Free by 10.4 points on StealthMark, 43.9 to 33.5. It leads on 8 of 9 benchmarks, including both games, and Cat Jam Free on 1. Hy4 preview scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
Model guide ↗
All results ↗

Overall StealthMark

33.5/100Overall rank 40/53
43.9/100Overall rank 30/53

General Intelligence

27.7/100
41.3/100

Visual Intelligence

43.0/100
48.6/100

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

NeitherApache-2.0
Open modelApache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Cat Jam Free
  • Hy4 preview
  • Other models
  • Median

DATASHEET

Specs and pricing

  • Cat Jam Free
  • Hy4 preview
  • Other models
  • Median
PricePer 1M output tokens, input below
Cat Jam Free: No list priceHy4 preview: $2.50$0.83 input
Context windowTokens per request, max output below
Cat Jam Free: Not publishedHy4 preview: 1M64K max output
Output speedTokens per second, our measurement
Cat Jam Free: Not measuredHy4 preview: 64tokens/s
SizeTotal and active parameters
Cat Jam Free: Not disclosedHy4 preview: 770B49B active
Developer
Not publishedTencent Hy Team
Released
Not published28 Aug 2026
Origin
Not publishedChina
Input → output
Not publishedText → text
Architecture
Not publishedMoE; 78-layer backbone with Gated DSA, 256 routed experts + 1 shared expert, top-8 routed experts active, plus native MTP layer

Full datasheets, every price and sourceHy4 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.

Cat Jam Free 33.8/100Rank 26/47

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

Hy4 preview 53.1/100Rank 14/47

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

Points per level

LevelCat Jam FreeHy4 preview
Level 1Second Thoughts
5 ptsOut of lives
26 ptsSurvived
Level 2Pressure Pot
6 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
11 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.

Cat Jam Free 33.9/100Rank 33/48

Cleared 2 of 5
Latch: complete playing field
Level 56 ptsTurn 25 / 40

Hy4 preview 35.6/100Rank 31/48

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

Points per level

LevelCat Jam FreeHy4 preview
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
6 ptsFinished early
Level 3Relay vault
10 ptsFinished early
18 ptsCleared
Level 4Passing bay
10.8 ptsFinished early
15.8 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
6 ptsFinished early
18.2 ptsFinished early

Newton's Mirror

Same task instructions

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

The judgment

Cat Jam Free

The image conveys a supported central sphere, separate black paint and crimson below cyan. Its contact and transport story is partially resolved. The exterior cutaway camera and largely missing mirror system dominate the limitations; isolated discs and smooth highlights provide little coherent optical structure.

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.

Score breakdown

CategoryCat Jam FreeHy4 preview
State at 600 ms14.0/2518.0/25
Camera and placement4.0/1511.5/15
Reflections3.5/12029.5/120
Materials and scale4.0/107.5/10
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.

The judgment

Cat Jam Free

A coherent, restrained cat illustration captures the pale palette and intent eyes. Its central expressive requirement—the committed forward-and-down neck bob—is insufficiently articulated. Simple geometry, faint paw construction and minimal surface detail limit the physical presence and finish.

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.

Score breakdown

CategoryCat Jam FreeHy4 preview
Task & likeness5.5/106.0/10
Anatomy & construction5.5/105.5/10
Space & placement6.0/107.5/10
Light & reflections6.0/107.0/10
Purposeful detail4.0/106.5/10
Artistry & character5.5/105.0/10
Materials & effects5.0/107.0/10
Visual integrity6.5/105.5/10

Benchmark task

Cat Jam Free

An ivory cat nods intently to music beside a tiny speaker. The scene tests feline anatomy, movement conveyed through a still pose and the contrast between pale fur and woven fabric.

Hy4 preview

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

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Cat Jam Free

The portrait is recognizable and cleanly assembled, but replication remains basic. Its frontal symmetry, elongated silhouette, simplified facial likeness and unresolved hands differ markedly from the original. Modest skin gradients provide volume, while clothing and landscape rely on broad, flat shapes.

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.

Score breakdown

CategoryCat Jam FreeHy4 preview
Task & likeness2.5/102.5/10
Anatomy & construction2.0/102.5/10
Space & placement4.0/102.5/10
Light & reflections3.5/101.5/10
Purposeful detail3.0/102.5/10
Artistry & character3.0/101.5/10
Materials & effects2.5/102.5/10
Visual integrity5.5/104.0/10

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

Cat Jam Free

The scene clearly supplies the requested beach subjects and playful activity. Clean silhouettes and warm gradients support readability, but elementary drawing, ambiguous parasol construction, weak grounding and a rigid sun reflection limit its depth and finish.

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.

Score breakdown

CategoryCat Jam FreeHy4 preview
Task & likeness7.0/108.5/10
Anatomy & construction4.5/105.5/10
Space & placement4.5/106.5/10
Light & reflections4.0/105.0/10
Purposeful detail4.0/106.0/10
Artistry & character4.5/105.5/10
Materials & effects4.5/105.0/10
Visual integrity5.5/106.0/10

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

Cat Jam Free

This benchmark has not been assessed yet.

Hy4 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

Same task instructions

Scene composition and interacting subjects.

The judgment

Cat Jam Free

An appealing cartoon demonstrates the back-riding arrangement through expressive faces and clean shapes. Uncertain steering contact, indistinct deck support and weak hull-water interaction limit physical coherence. Smooth gradients add volume, but simple rounded construction and sparse material detail constrain complexity and finish.

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.

Score breakdown

CategoryCat Jam FreeHy4 preview
Task & likeness6.0/107.0/10
Anatomy & construction5.0/104.0/10
Space & placement5.0/106.0/10
Light & reflections5.0/106.5/10
Purposeful detail6.0/105.5/10
Artistry & character5.0/104.5/10
Materials & effects5.0/105.5/10
Visual integrity4.5/105.0/10

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

Cat Jam Free

A coherent cartoon with readable bicycle placement, controlled outlines and modest surface shading. The separated-looking upper bill weakens pelican likeness; schematic limbs, uncertain gripping contact and simplified mechanics constrain construction. Opaque wheel interiors flatten spatial relationships. Limited feather complexity and directional lighting keep the finish modest.

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.

Score breakdown

CategoryCat Jam FreeHy4 preview
Task & likeness7.0/107.5/10
Anatomy & construction5.0/104.5/10
Space & placement6.0/106.5/10
Light & reflections5.0/107.0/10
Purposeful detail5.5/106.0/10
Artistry & character5.5/105.0/10
Materials & effects6.5/105.0/10
Visual integrity6.5/107.0/10

Benchmark task

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