Cat Jam Free 33.8/100Rank 26/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Cat Jam Free leads GPT-5.5 by 2.2 points on StealthMark, 33.5 to 31.3. It leads on 4 of the 7 benchmarks with results for both and GPT-5.5 on 3. Cat Jam Free scores higher on Raccoon, with its largest category advantage in anatomy & construction.
See the difference ↘On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.
BENCHMARK BY BENCHMARK
DATASHEET
Full datasheets, every price and sourceGPT-5.5 ↗
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.

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.

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


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.
GPT-5.5
The paint ordering and separate black bead support part of the physical state, but adhesion and rotational transport remain only partly established. The sweeping cyan arc and long crimson lobes do not clearly communicate the limited time since their respective impacts. The main sphere is too large and too low, and the black bead is below its required projected position. Displaced isolated sphere images, a flattened floor echo and missing recursive, nested and emitter reflections provide little coherent optical structure. The colored paint is excessively bulky for the specified quantities.
| Category | Cat Jam Free | GPT-5.5 |
|---|---|---|
| State at 600 ms | 14.0/25 | 15.0/25 |
| Camera and placement | 4.0/15 | 6.0/15 |
| Reflections | 3.5/120 | 5.0/120 |
| Materials and scale | 4.0/10 | 6.0/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Visual construction and creative interpretation.


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.
GPT-5.5
Six pale, scaled lobes form a balanced radial arrangement, but they remain separate capsules rather than an interlocking serpent knot. There are no crossings, alternating overlaps, or crisp inner bends; the central hexagon is an isolated outline. Small outward-facing heads sit within the lobes without integrated necks. Soft shading and tidy contours provide some finish, while repetitive oval scales and cartoon faces limit organic credibility.
| Category | Cat Jam Free | GPT-5.5 |
|---|---|---|
| Task & likeness | 5.5/10 | 3.0/10 |
| Anatomy & construction | 5.5/10 | 3.0/10 |
| Space & placement | 6.0/10 | 5.0/10 |
| Light & reflections | 6.0/10 | 5.0/10 |
| Purposeful detail | 4.0/10 | 4.5/10 |
| Artistry & character | 5.5/10 | 4.0/10 |
| Materials & effects | 5.0/10 | 4.5/10 |
| Visual integrity | 6.5/10 | 7.0/10 |
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.
GPT-5.5
A pale serpent woven into an interlocking knot tests connected anatomy, repeated structure and readable overlaps. Organic surface detail must work with the overall geometry.
Precise visual recall and portrait reconstruction.


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.
GPT-5.5
The veil, restrained smile, crossed hands and muted landscape establish Mona Lisa references. The oversized frontal face and schematic features weaken likeness and expression, while fingerless tapered hand shapes leave anatomy unresolved. Clean contours and balanced framing provide coherence, but sparse garment detail, broad landscape bands and shallow shading limit the portrait's sophistication.
| Category | Cat Jam Free | GPT-5.5 |
|---|---|---|
| Task & likeness | 2.5/10 | 1.5/10 |
| Anatomy & construction | 2.0/10 | 1.5/10 |
| Space & placement | 4.0/10 | 1.5/10 |
| Light & reflections | 3.5/10 | 2.0/10 |
| Purposeful detail | 3.0/10 | 2.5/10 |
| Artistry & character | 3.0/10 | 1.5/10 |
| Materials & effects | 2.5/10 | 2.0/10 |
| Visual integrity | 5.5/10 | 1.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


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.
GPT-5.5
The sunset, palms, birds, playful animals and ball clearly establish the requested beach scene. Warm sky gradients and clean silhouettes make it appealing. Animal construction is underdeveloped: torso and limb connections are unclear, especially in the round-eared foreground figure. The dolphin lacks a convincing splash, and broad reflection bands suggest sunset light without resolving its behavior on water.
| Category | Cat Jam Free | GPT-5.5 |
|---|---|---|
| Task & likeness | 7.0/10 | 7.0/10 |
| Anatomy & construction | 4.5/10 | 2.5/10 |
| Space & placement | 4.5/10 | 3.0/10 |
| Light & reflections | 4.0/10 | 3.0/10 |
| Purposeful detail | 4.0/10 | 3.0/10 |
| Artistry & character | 4.5/10 | 3.0/10 |
| Materials & effects | 4.5/10 | 3.0/10 |
| Visual integrity | 5.5/10 | 3.5/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Cat Jam Free
This benchmark has not been assessed yet.
GPT-5.5
This benchmark has not been assessed yet.
A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.
Scene composition and interacting subjects.


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.
GPT-5.5
The raccoon's masked face, bright hull and sweeping wake make the scene readable and lively. The dog is much less resolved: its head is ambiguous, overlapping brown forms obscure its anatomy, and its paws do not visibly grip the controls. Smooth shapes and cheerful colors provide appeal, but weak steering construction and limited depth keep the drawing uneven.
| Category | Cat Jam Free | GPT-5.5 |
|---|---|---|
| Task & likeness | 6.0/10 | 3.5/10 |
| Anatomy & construction | 5.0/10 | 3.0/10 |
| Space & placement | 5.0/10 | 4.5/10 |
| Light & reflections | 5.0/10 | 5.0/10 |
| Purposeful detail | 6.0/10 | 3.5/10 |
| Artistry & character | 5.0/10 | 3.0/10 |
| Materials & effects | 5.0/10 | 5.0/10 |
| Visual integrity | 4.5/10 | 3.0/10 |
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.
Subject construction and spatial relationships.


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.
GPT-5.5
The oversized bill, bright bicycle and sunset create an appealing, recognizable cartoon. Riding mechanics are less convincing: the wing has no clear steering contact, leg attachments are uneven, and feet do not visibly engage pedals. A dark notch complicates the rear neck junction. Clean contours and orderly spokes provide polish, while simplified anatomy and lighting limit depth.
| Category | Cat Jam Free | GPT-5.5 |
|---|---|---|
| Task & likeness | 7.0/10 | 7.5/10 |
| Anatomy & construction | 5.0/10 | 4.5/10 |
| Space & placement | 6.0/10 | 6.5/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 5.5/10 | 5.5/10 |
| Artistry & character | 5.5/10 | 5.0/10 |
| Materials & effects | 6.5/10 | 6.0/10 |
| Visual integrity | 6.5/10 | 7.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.