Inkling-Small 30.2/100Rank 29/49

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Callstack Apex leads Inkling-Small by 21.9 points on StealthMark, 49.5 to 27.6. It leads on 7 of the 8 benchmarks with results for both and Inkling-Small on 1, including Latch. Pixel Canary scores higher on Newton's Mirror, with its largest category advantage in camera and placement.
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
Inkling-Small takes 4× more context. Callstack Apex scores higher on StealthMark.
Full datasheets, every price and sourceInkling-Small ↗Callstack Apex ↗
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 ↗


Inkling-Small
The sphere's apparent floor support, separate dark feature and broad paint ordering justify partial state credit. The major weakness is the largely missing mirror system: isolated side images and faint floor echoes do not establish repeated virtual rooms or curved spherical mapping. Downward framing, the oversized frontal panel, unresolved paint transport and satin surface appearance remain distinct limitations.
Callstack Apex
The principal sphere placement and paint contact sequence are supported. Isolated sphere and panel images provide limited optical structure, but missing lateral chains and side-floor continuations prevent a coherent repeating mirror room. The main and reflected spheres lack ordered curved nested imagery, while sparse planar emitter images and incomplete spherical emitter mapping leave most of the reflection system unsupported.
| Category | Inkling-Small | Callstack Apex |
|---|---|---|
| State at 600 ms | 14.0/25 | 20.0/25 |
| Camera and placement | 3.0/15 | 13.0/15 |
| Reflections | 8.0/120 | 10.0/120 |
| Materials and scale | 2.5/10 | 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.


Inkling-Small
The faces and dripping caps communicate a cute mushroom scene, but simple construction and weak spatial relationships limit the result. The defining foot-stamping action is unresolved, the flattering portrait is smaller than its painter, and the requested material contrasts are only partly conveyed.
Callstack Apex
The cheerful yellow bird, cream eyes, orange features and miniature teal console closely match the brief. Clean block edges, restrained colors and soft shadows create an appealing composition. The body reads more like a gridded disc than a fully cubic sphere, and the outlined left wing has limited volume. The right wing reaches the cyan block, though its grip is ambiguous.
| Category | Inkling-Small | Callstack Apex |
|---|---|---|
| Task & likeness | 2.5/10 | 8.5/10 |
| Anatomy & construction | 1.5/10 | 7.0/10 |
| Space & placement | 3.5/10 | 7.5/10 |
| Light & reflections | 3.0/10 | 7.5/10 |
| Purposeful detail | 4.5/10 | 7.5/10 |
| Artistry & character | 3.0/10 | 7.0/10 |
| Materials & effects | 3.5/10 | 7.0/10 |
| Visual integrity | 2.0/10 | 7.5/10 |
Inkling-Small
Character scenes test expression, anatomy, materials and coherent visual construction.
Callstack Apex
A rounded bird built from small cubes explores a miniature machine. The scene tests block construction, expressive proportions, contact and soft lighting.
Precise visual recall and portrait reconstruction.


Inkling-Small
A recognizable but rudimentary Mona Lisa interpretation. Facial shading and subdued colors provide coherence, while the frontal blocklike torso, unresolved wrists, fingerless hands and shallow landscape substantially limit likeness, construction and finish.
Callstack Apex
The framed portrait recalls Mona Lisa through dark hair, folded arms and a hazy landscape. Replication is limited by wide, staring eyes, an elongated neck and a downturned mouth. The overlapping hands lack convincing finger and wrist construction. Soft tonal shading suggests volume, but pervasive blur obscures clothing, landscape and anatomical detail.
| Category | Inkling-Small | Callstack Apex |
|---|---|---|
| Task & likeness | 2.5/10 | 3.5/10 |
| Anatomy & construction | 2.5/10 | 4.0/10 |
| Space & placement | 3.0/10 | 4.5/10 |
| Light & reflections | 2.5/10 | 6.0/10 |
| Purposeful detail | 2.0/10 | 4.5/10 |
| Artistry & character | 2.5/10 | 4.5/10 |
| Materials & effects | 2.0/10 | 5.5/10 |
| Visual integrity | 3.0/10 | 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.


Inkling-Small
A recognizable sunset beach with a clear focal sun and appealing color transitions. Connected fish silhouettes and layered scenery establish basic coherence. Primitive figures, ambiguous recreation, sparse descriptive detail and weak grounding limit construction and depth. The aligned reflection supplies a useful lighting cue, but shadows and material effects remain underdeveloped.
Callstack Apex
A cohesive sunset beach illustration with lively wildlife, playful accents, and an appealing warm-to-purple palette. Palm framing and the aligned sun reflection organize the scene, while connected silhouettes keep the activities readable. Schematic joints, ambiguous dolphin junctions, loosely matched reflections, and repetitive surface marks limit construction, lighting coherence, and material depth.
| Category | Inkling-Small | Callstack Apex |
|---|---|---|
| Task & likeness | 3.5/10 | 8.5/10 |
| Anatomy & construction | 3.0/10 | 4.5/10 |
| Space & placement | 3.0/10 | 7.5/10 |
| Light & reflections | 3.0/10 | 5.5/10 |
| Purposeful detail | 3.0/10 | 7.5/10 |
| Artistry & character | 3.0/10 | 6.5/10 |
| Materials & effects | 2.5/10 | 7.0/10 |
| Visual integrity | 2.0/10 | 4.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Inkling-Small
This benchmark has not been assessed yet.
Callstack Apex
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.


Inkling-Small
Recognizable animals, readable accessories and an appealing sunset support a coherent basic cartoon. Rounded construction leaves joints, riding support and steering unresolved. Decorative gradients contribute atmosphere, but directional lighting, distinct materials and convincing water displacement are weakly demonstrated.
Callstack Apex
The raccoon clearly rides the dog's back, and the dog's paws reach the jet ski controls. Expressive faces, a sweeping tail and a strong sunset composition give the illustration character. Limbs remain connected, but the dog's foreleg joints and vehicle seating are loosely constructed. Angular splashes convey speed more successfully than convincing water displacement; lighting and reflections remain decorative.
| Category | Inkling-Small | Callstack Apex |
|---|---|---|
| Task & likeness | 4.0/10 | 9.0/10 |
| Anatomy & construction | 3.0/10 | 7.0/10 |
| Space & placement | 4.0/10 | 7.5/10 |
| Light & reflections | 5.0/10 | 7.0/10 |
| Purposeful detail | 5.5/10 | 8.5/10 |
| Artistry & character | 4.0/10 | 7.5/10 |
| Materials & effects | 5.0/10 | 7.0/10 |
| Visual integrity | 5.0/10 | 8.0/10 |
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.

Inkling-Small
The pelican is immediately recognizable, and its sweeping neck, shaped bill and orderly spokes provide character. Riding remains only partially realized: legs, pedal engagement, steering and seat support cannot be read confidently. Controlled graphic effects add atmosphere, but simplified construction and weak grounding keep the result basic.
Callstack Apex
An appealing cartoon with a distinctive pelican, expressive eye, warm bill and carefully drawn bicycle wheels. The wing reaches the handlebar, but the feet do not clearly engage the pedals, weakening the riding mechanics. Layered hills create depth; limited ground shadows weaken contact. Clean curves and purposeful feather details give the illustration polish.
| Category | Inkling-Small | Callstack Apex |
|---|---|---|
| Task & likeness | 4.0/10 | 8.5/10 |
| Anatomy & construction | 3.0/10 | 6.5/10 |
| Space & placement | 3.0/10 | 7.5/10 |
| Light & reflections | 3.0/10 | 7.5/10 |
| Purposeful detail | 4.5/10 | 8.0/10 |
| Artistry & character | 5.0/10 | 8.0/10 |
| Materials & effects | 4.5/10 | 7.5/10 |
| Visual integrity | 3.0/10 | 8.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.