STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Cat Jam Free vs Fledge Alpha

Fledge Alpha leads Cat Jam Free by 2.3 points on StealthMark, 35.8 to 33.5. It leads on 4 of the 7 benchmarks with results for both and Cat Jam Free on 3. Fledge Alpha scores higher on Raccoon, with its largest category advantage in prompt & likeness.

See the difference ↘
Model guide ↗
Model guide ↗

Overall StealthMark

33.5/100Overall rank 40/53
35.8/100Overall rank 38/53

General Intelligence

27.7/100
27.1/100

Visual Intelligence

43.0/100
45.2/100

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

  • Fledge AlphaMulti-step reasoning not measured

Open or local

NeitherApache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Cat Jam Free
  • Fledge Alpha
  • Other models
  • Median

DATASHEET

Specs and pricing

  • Cat Jam Free
  • Fledge Alpha
  • Other models
  • Median
Output speedTokens per second, our measurement
Cat Jam Free: Not measuredFledge Alpha: 63tokens/s

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 FreeFledge Alpha
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 FreeFledge Alpha
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.

Fledge Alpha

The candidate communicates a round metallic sphere, three paint colors and a separate airborne black blob. Its hovering support relationship, displaced framing and unresolved paint interaction limit physical credit. Sparse planar light ghosts and a soft sphere highlight provide little evidence for the required wall/floor repetitions and curved nested mirror imagery.

Score breakdown

CategoryCat Jam FreeFledge Alpha
State at 600 ms14.0/259.0/25
Camera and placement4.0/155.0/15
Reflections3.5/1207.5/120
Materials and scale4.0/103.5/10
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.

Fledge Alpha

A coherent, appealing mascot with expressive eyes, a cheerful beak and a readable swept-back silhouette. Its larger forward foot and trailing feathers suggest a running stride, but the upright body, stiff legs and minimally articulated feet limit convincing motion. Clean flat shapes suit the brief, while uneven feather junctions and incomplete cream accents reduce polish.

Score breakdown

CategoryCat Jam FreeFledge Alpha
Task & likeness5.5/107.5/10
Anatomy & construction5.5/106.5/10
Space & placement6.0/107.0/10
Light & reflections6.0/105.5/10
Purposeful detail4.0/106.5/10
Artistry & character5.5/104.0/10
Materials & effects5.0/106.0/10
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.

Fledge Alpha

An eager young seabird running toward the viewer tests expressive anatomy, balance and a convincing forward-moving pose.

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.

Fledge Alpha

A recognizable but basic Mona Lisa reinterpretation with a coherent silhouette and subdued palette. Curtain-like hair obscures much of the face, while elongated facial construction and oversized, minimally articulated hands substantially weaken replication. Soft shading supplies modest volume, but anatomy, landscape depth and purposeful detail remain underdeveloped.

Score breakdown

CategoryCat Jam FreeFledge Alpha
Task & likeness2.5/103.0/10
Anatomy & construction2.0/103.0/10
Space & placement4.0/102.5/10
Light & reflections3.5/102.5/10
Purposeful detail3.0/103.0/10
Artistry & character3.0/103.0/10
Materials & effects2.5/102.5/10
Visual integrity5.5/102.5/10

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.

Fledge Alpha

A cheerful, recognizable sunset beach with a cohesive warm palette and clear accessories. Simple construction, uncertain palm support, an ambiguous upper boundary and schematic reflections limit depth and finish. The scene communicates its subject successfully but lacks the developed forms, lighting and detail of exceptional illustration.

Score breakdown

CategoryCat Jam FreeFledge Alpha
Task & likeness7.0/107.5/10
Anatomy & construction4.5/104.0/10
Space & placement4.5/105.5/10
Light & reflections4.0/105.0/10
Purposeful detail4.0/103.0/10
Artistry & character4.5/103.0/10
Materials & effects4.5/102.5/10
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.

Fledge Alpha

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.

Fledge Alpha

An appealing sunset illustration with recognizable characters and a clear riding action. Color, expression and silhouette are stronger than anatomical construction: overlapping paws obscure support, the dog's steering limb is simplified, and the vehicle controls lack definition. The wake conveys movement, while lighting and water reflections remain decorative.

Score breakdown

CategoryCat Jam FreeFledge Alpha
Task & likeness6.0/108.5/10
Anatomy & construction5.0/105.5/10
Space & placement5.0/107.5/10
Light & reflections5.0/106.5/10
Purposeful detail6.0/107.0/10
Artistry & character5.0/105.5/10
Materials & effects5.0/107.0/10
Visual integrity4.5/104.5/10

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.

Fledge Alpha

A clear, cheerful illustration with a recognizable pelican, coherent bicycle silhouette and tidy composition. Simplified leg articulation, steering contact, mechanical detail and lighting keep it at a competent illustrative level.

Score breakdown

CategoryCat Jam FreeFledge Alpha
Task & likeness7.0/108.0/10
Anatomy & construction5.0/106.0/10
Space & placement6.0/106.5/10
Light & reflections5.0/104.5/10
Purposeful detail5.5/105.5/10
Artistry & character5.5/105.0/10
Materials & effects6.5/105.5/10
Visual integrity6.5/106.5/10

Benchmark task

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