Cat Jam Free 33.8/100Rank 26/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Kimi K3.1 Pro leads Cat Jam Free by 23.2 points on StealthMark, 56.7 to 33.5. It leads on all 9 benchmarks. Kimi K3.1 Pro scores higher on Newton's Mirror, with its largest category advantage in reflections.
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 sourceKimi K3.1 Pro ↗
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.
Kimi K3.1 Pro
The settled sphere, separate airborne black paint and crimson-before-cyan interaction are supported, with a modest crimson travel overshoot. A shared downward framing displacement remains after accounting for the square canvas. The principal limitation is the reflection system: sparse sphere copies and generic curved bands omit most of the ordered mirror-room structure. Materials receive a small upward revision because bounded bright images and dark bands visibly establish some polish, while soft shading and bulky paint remain separate weaknesses.
| Category | Cat Jam Free | Kimi K3.1 Pro |
|---|---|---|
| State at 600 ms | 14.0/25 | 23.5/25 |
| Camera and placement | 4.0/15 | 10.5/15 |
| Reflections | 3.5/120 | 26.0/120 |
| Materials and scale | 4.0/10 | 7.0/10 |
| 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.
Kimi K3.1 Pro
The transformed reflection, attentive pose and constellation anatomy clearly communicate introspection. Purposeful fine details enrich a coherent composition. Tubular limbs, crowded lower-body overlaps, shallow depth and limited cast lighting keep the overall execution within the competent range.
| Category | Cat Jam Free | Kimi K3.1 Pro |
|---|---|---|
| Task & likeness | 5.5/10 | 8.0/10 |
| Anatomy & construction | 5.5/10 | 5.5/10 |
| Space & placement | 6.0/10 | 6.5/10 |
| Light & reflections | 6.0/10 | 6.5/10 |
| Purposeful detail | 4.0/10 | 7.5/10 |
| Artistry & character | 5.5/10 | 7.0/10 |
| Materials & effects | 5.0/10 | 7.0/10 |
| 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.
Kimi K3.1 Pro
An imagined creature encounters its reflection. The scene tests original character design, visual self-interpretation and the relationship between a subject and its reflected image.
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.
Kimi K3.1 Pro
A coherent, recognizable interpretation with controlled color and readable landscape layers. Replication is limited by the frontal seated construction, elongated facial proportions and oversized, weakly articulated hands. Smooth shading supplies some volume but little of the reference's subtle expression, fabric structure or atmospheric transitions.
| Category | Cat Jam Free | Kimi K3.1 Pro |
|---|---|---|
| Task & likeness | 2.5/10 | 5.0/10 |
| Anatomy & construction | 2.0/10 | 5.0/10 |
| Space & placement | 4.0/10 | 5.5/10 |
| Light & reflections | 3.5/10 | 6.0/10 |
| Purposeful detail | 3.0/10 | 5.5/10 |
| Artistry & character | 3.0/10 | 6.0/10 |
| Materials & effects | 2.5/10 | 5.0/10 |
| Visual integrity | 5.5/10 | 6.5/10 |
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.
Kimi K3.1 Pro
A coherent, playful beach illustration with readable animals, an organized composition and an aligned sunset reflection. Connected silhouettes, sand texture and atmospheric effects demonstrate controlled execution. Simplified joints, flattened foreground viewpoints and inconsistent shadows limit anatomical and spatial credibility.
| Category | Cat Jam Free | Kimi K3.1 Pro |
|---|---|---|
| Task & likeness | 7.0/10 | 8.5/10 |
| Anatomy & construction | 4.5/10 | 5.5/10 |
| Space & placement | 4.5/10 | 5.5/10 |
| Light & reflections | 4.0/10 | 6.5/10 |
| Purposeful detail | 4.0/10 | 6.5/10 |
| Artistry & character | 4.5/10 | 5.5/10 |
| Materials & effects | 4.5/10 | 6.5/10 |
| Visual integrity | 5.5/10 | 7.5/10 |
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.
Kimi K3.1 Pro
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.
Kimi K3.1 Pro
The additional comparisons support retaining the assessment. Readable steering, shaped animal contours and purposeful details coexist with simplified joints, a frontal passenger whose seated weight is weakly conveyed, and limited physical lighting. The angled craft establishes more depth than the riding pose resolves.
| Category | Cat Jam Free | Kimi K3.1 Pro |
|---|---|---|
| Task & likeness | 6.0/10 | 7.0/10 |
| Anatomy & construction | 5.0/10 | 5.5/10 |
| Space & placement | 5.0/10 | 6.0/10 |
| Light & reflections | 5.0/10 | 5.5/10 |
| Purposeful detail | 6.0/10 | 7.0/10 |
| Artistry & character | 5.0/10 | 6.0/10 |
| Materials & effects | 5.0/10 | 6.0/10 |
| 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.
Kimi K3.1 Pro
A characterful coastal illustration with controlled contours and varied feather, accessory and bicycle detail. Layered scenery and subtle shading enrich the presentation. Soft leg articulation, unresolved riding contacts, shallow depth and generalized lighting limit physical precision.
| Category | Cat Jam Free | Kimi K3.1 Pro |
|---|---|---|
| Task & likeness | 7.0/10 | 8.5/10 |
| Anatomy & construction | 5.0/10 | 7.5/10 |
| Space & placement | 6.0/10 | 6.5/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 5.5/10 | 7.5/10 |
| Artistry & character | 5.5/10 | 7.5/10 |
| Materials & effects | 6.5/10 | 6.5/10 |
| Visual integrity | 6.5/10 | 7.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.