STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Cat Jam Free vs LongCat-2.0

Cat Jam Free leads LongCat-2.0 by 8.0 points on StealthMark, 33.5 to 25.5. LongCat-2.0 leads on 4 of the 7 benchmarks with results for both and Cat Jam Free on 3. Cat Jam Free scores higher on Ground Truth.

See the difference ↘
Model guide ↗
Model guide ↗

Overall StealthMark

33.5/100Overall rank 40/53
25.5/100Overall rank 45/53

General Intelligence

27.7/100
17.2/100

Visual Intelligence

43.0/100
34.4/100

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

  • LongCat-2.0Multi-step reasoning not measured

Open or local

NeitherApache-2.0
Open modelMIT

BENCHMARK BY BENCHMARK

Where each model leads

  • Cat Jam Free
  • LongCat-2.0
  • Other models
  • Median

DATASHEET

Specs and pricing

  • Cat Jam Free
  • LongCat-2.0
  • Other models
  • Median
PricePer 1M output tokens, input below
Cat Jam Free: No list priceLongCat-2.0: $1.20$0.30 input
Context windowTokens per request, max output below
Cat Jam Free: Not publishedLongCat-2.0: 1M
Output speedTokens per second, our measurement
Cat Jam Free: Not measuredLongCat-2.0: 86tokens/s
Developer
Not publishedMeituan
Origin
Not publishedChina
Input → output
Not publishedText → text
Architecture
Not publishedMixture-of-Experts with LongCat Sparse Attention

Full datasheets, every price and sourceLongCat-2.0 ↗

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

Points per level

LevelCat Jam FreeLongCat-2.0
Level 1Second Thoughts
5 ptsOut of lives
No run
Level 2Pressure Pot
6 ptsOut of lives
No run
Level 3Hide or Flight
9 ptsSurvived
No run

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

Points per level

LevelCat Jam FreeLongCat-2.0
Level 1Hold the door
5.2 ptsCleared
No run
Level 2Crossfeed
9.8 ptsCleared
No run
Level 3Relay vault
10 ptsFinished early
No run
Level 4Passing bay
10.8 ptsFinished early
No run
Level 5Second thoughts
6 ptsFinished early
No run

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.

LongCat-2.0

Cyan lies on the sphere's facing middle rather than showing its recent interaction near the apex. Separate airborne black and elongated crimson support part of the timing sequence. Small side images and an overlapping lower image provide limited reflection ordering, but recursive room structure, nested imagery and emitter mappings are largely absent. The main sphere is smaller and higher in the frame than prescribed, and the surfaces have a soft, matte appearance.

Score breakdown

CategoryCat Jam FreeLongCat-2.0
State at 600 ms14.0/259.5/25
Camera and placement4.0/156.5/15
Reflections3.5/12012.5/120
Materials and scale4.0/105.5/10
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.

LongCat-2.0

Amber slit eyes, a pointed beak, cream feathers and gold-trimmed black clothing establish the secretive owl rogue. The head appears frontal rather than lowered, with much of the face exposed. The centered silhouette is effective, but stiff cloak geometry, shallow facial modeling and extremely dark clothing limit depth and finish. Sparse gold markings suggest the requested circuitry only loosely.

Score breakdown

CategoryCat Jam FreeLongCat-2.0
Task & likeness5.5/107.0/10
Anatomy & construction5.5/106.0/10
Space & placement6.0/106.0/10
Light & reflections6.0/105.5/10
Purposeful detail4.0/106.0/10
Artistry & character5.5/106.5/10
Materials & effects5.0/105.5/10
Visual integrity6.5/106.5/10

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.

LongCat-2.0

A cloaked owl with luminous eyes tests expression, fabric folds and the separation of dark forms.

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.

LongCat-2.0

The centered portrait, slight smile, overlapping hands and distant landscape suggest Mona Lisa, but replication is weak. The face has little volume, the shoulders and torso form a narrow wedge, and the hands are fingerless ovals with unresolved wrists. Broad gray background bands provide limited depth. A bright head rim and pale hands contrast with an almost featureless dark figure.

Score breakdown

CategoryCat Jam FreeLongCat-2.0
Task & likeness2.5/100.5/10
Anatomy & construction2.0/100.5/10
Space & placement4.0/100.5/10
Light & reflections3.5/100.5/10
Purposeful detail3.0/100.0/10
Artistry & character3.0/100.5/10
Materials & effects2.5/100.0/10
Visual integrity5.5/100.5/10

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

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.

LongCat-2.0

The sunset, palms, birds and beach animals create a cheerful, readable scene. Clean silhouettes and a vivid sky establish the composition, but construction remains schematic. The right palm appears rooted in open water, shadows have limited connection to the sunset, and the sun’s reflection consists of rigid bands. Small creatures and beach equipment are recognizable but minimally developed.

Score breakdown

CategoryCat Jam FreeLongCat-2.0
Task & likeness7.0/107.5/10
Anatomy & construction4.5/105.5/10
Space & placement4.5/105.5/10
Light & reflections4.0/106.0/10
Purposeful detail4.0/105.0/10
Artistry & character4.5/105.0/10
Materials & effects4.5/103.0/10
Visual integrity5.5/104.0/10

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.

The judgment

Cat Jam Free

This benchmark has not been assessed yet.

LongCat-2.0

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

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.

LongCat-2.0

The raccoon is recognizable and expressive, with a clear mask and striped tail. The dog's anatomy is poorly resolved, and the flattened craft lacks convincing steering and seating. Feet extend below the hull, weakening the sense of support. An appealing palette, clean shapes and decorative water effects give the illustration some polish.

Score breakdown

CategoryCat Jam FreeLongCat-2.0
Task & likeness6.0/104.0/10
Anatomy & construction5.0/103.0/10
Space & placement5.0/104.5/10
Light & reflections5.0/105.5/10
Purposeful detail6.0/106.0/10
Artistry & character5.0/103.0/10
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

Different 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.

LongCat-2.0

A clearly recognizable pelican cycles through a well-composed coastal sunset. Warm colors, flowing scarf, feather contours and bicycle details give the illustration character. The legs connect to the body, but the farther foot's pedal contact and the wing's handlebar grip remain ambiguous. Clean vector shapes provide polish, with limited material texture and directional shading.

Score breakdown

CategoryCat Jam FreeLongCat-2.0
Task & likeness7.0/108.5/10
Anatomy & construction5.0/107.0/10
Space & placement6.0/108.0/10
Light & reflections5.0/107.5/10
Purposeful detail5.5/108.0/10
Artistry & character5.5/108.5/10
Materials & effects6.5/107.0/10
Visual integrity6.5/108.5/10

Benchmark task

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