Cat Jam Free 33.8/100Rank 26/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Cat Jam Free leads Gemma 4 31B by 7.7 points on StealthMark, 33.5 to 25.8. It leads on 7 of 9 benchmarks, including both games, and Gemma 4 31B on 2. Cat Jam Free scores higher on Raccoon, with its largest category advantage in prompt & likeness.
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 sourceGemma 4 31B ↗
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.
Gemma 4 31B
The sphere's volume, separate airborne black blob and vertical color ordering are readable. The large, low sphere, plain surrounding planes and absent nested optical imagery leave the central geometric and reflection requirements unsupported. Paint contact and transport remain unresolved. Material credit recognizes the visible convex shading, highlights and distinct surface colors while retaining deductions for the schematic finish and oversized blobs.
| Category | Cat Jam Free | Gemma 4 31B |
|---|---|---|
| State at 600 ms | 14.0/25 | 11.0/25 |
| Camera and placement | 4.0/15 | 3.0/15 |
| Reflections | 3.5/120 | 0.0/120 |
| Materials and scale | 4.0/10 | 5.5/10 |
| 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.
Gemma 4 31B
A clean, appealing luminous mascot with coherent body continuity and a readable jar-hugging pose. Rounded highlights, smooth gradients and balanced framing work well. The teardrop silhouette, modest eyes and nearly even grin only partly satisfy the character brief; sparse jar construction and simple geometry limit sophistication.
| Category | Cat Jam Free | Gemma 4 31B |
|---|---|---|
| Task & likeness | 5.5/10 | 6.0/10 |
| Anatomy & construction | 5.5/10 | 6.0/10 |
| Space & placement | 6.0/10 | 7.5/10 |
| Light & reflections | 6.0/10 | 6.5/10 |
| Purposeful detail | 4.0/10 | 5.5/10 |
| Artistry & character | 5.5/10 | 5.0/10 |
| Materials & effects | 5.0/10 | 6.5/10 |
| Visual integrity | 6.5/10 | 7.5/10 |
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.
Gemma 4 31B
A small luminous creature proudly holding an empty glass jar tests expression, transparent materials and the balance of character and prop.
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.
Gemma 4 31B
The portrait is recognizable through its silhouette, palette and smile, with clean execution of simple shapes. Replication remains weak: the face and pose differ markedly, hands become fingerless ovals, clothing lacks construction, and the landscape loses its atmospheric detail. Basic gradients provide limited volume.
| Category | Cat Jam Free | Gemma 4 31B |
|---|---|---|
| Task & likeness | 2.5/10 | 3.0/10 |
| Anatomy & construction | 2.0/10 | 4.0/10 |
| Space & placement | 4.0/10 | 4.0/10 |
| Light & reflections | 3.5/10 | 3.5/10 |
| Purposeful detail | 3.0/10 | 2.0/10 |
| Artistry & character | 3.0/10 | 3.5/10 |
| Materials & effects | 2.5/10 | 2.5/10 |
| Visual integrity | 5.5/10 | 5.5/10 |
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.
Gemma 4 31B
A coherent beach illustration with clean silhouettes, a sweeping shoreline and an effective sunset palette. Requested subjects are recognizable, but primitive animal construction, sparse detail, unsupported palm placement and schematic reflections limit drawing sophistication and physical credibility.
| Category | Cat Jam Free | Gemma 4 31B |
|---|---|---|
| Task & likeness | 7.0/10 | 5.0/10 |
| Anatomy & construction | 4.5/10 | 2.0/10 |
| Space & placement | 4.5/10 | 5.0/10 |
| Light & reflections | 4.0/10 | 2.5/10 |
| Purposeful detail | 4.0/10 | 2.0/10 |
| Artistry & character | 4.5/10 | 2.0/10 |
| Materials & effects | 4.5/10 | 2.0/10 |
| Visual integrity | 5.5/10 | 5.0/10 |
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.
Gemma 4 31B
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.
Gemma 4 31B
Clean, simple silhouettes communicate a raccoon riding on a dog. Limited animal specificity, absent steering controls and a flat platform weaken the requested scene. Small facial marks provide purposeful detail, while unresolved support, flat lighting and schematic water restrict physical coherence. Primitive but coherent construction supports basic drawing quality.
| Category | Cat Jam Free | Gemma 4 31B |
|---|---|---|
| Task & likeness | 6.0/10 | 2.5/10 |
| Anatomy & construction | 5.0/10 | 3.0/10 |
| Space & placement | 5.0/10 | 4.0/10 |
| Light & reflections | 5.0/10 | 1.0/10 |
| Purposeful detail | 6.0/10 | 2.5/10 |
| Artistry & character | 5.0/10 | 2.5/10 |
| Materials & effects | 5.0/10 | 2.0/10 |
| Visual integrity | 4.5/10 | 7.0/10 |
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.
Gemma 4 31B
A clean, readable illustration with balanced placement and coherent basic geometry. The sky gradient and ground shadow establish diffuse illumination. Primitive shapes and sparse detail limit artistry, while unclear leg attachment, missing pedal contact and unresolved steering weaken the riding action.
| Category | Cat Jam Free | Gemma 4 31B |
|---|---|---|
| Task & likeness | 7.0/10 | 4.0/10 |
| Anatomy & construction | 5.0/10 | 3.0/10 |
| Space & placement | 6.0/10 | 4.5/10 |
| Light & reflections | 5.0/10 | 5.0/10 |
| Purposeful detail | 5.5/10 | 3.0/10 |
| Artistry & character | 5.5/10 | 3.0/10 |
| Materials & effects | 6.5/10 | 4.0/10 |
| Visual integrity | 6.5/10 | 4.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.