STEALTHMARK · HEAD TO HEAD
All comparisons ↗Fledge Alpha vs Inkling-Small
Fledge Alpha leads Inkling-Small by 8.2 points on StealthMark, 35.8 to 27.6. It leads on 6 of the 7 benchmarks with results for both, with 1 tied. Fledge Alpha scores higher on Raccoon, with its largest category advantage in prompt & likeness.
See the difference ↘Overall StealthMark
General Intelligence
Visual Intelligence
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
- Inkling-Small
BENCHMARK BY BENCHMARK
Where each model leads
- Fledge Alpha
- Inkling-Small
- Other models
- Median
Games
SVG
DATASHEET
Specs and pricing
- Fledge Alpha
- Inkling-Small
- Other models
- Median
- Developer
- Not publishedThinking Machines Lab
- Input → output
- Not publishedText, image, audio → text
- Architecture
- Not published42-layer decoder-only transformer with sparse mixture-of-experts feed-forward (6 of 256 routed experts plus 2 shared per token); hybrid local and global attention; natively multimodal with a hierarchical patch image encoder and discrete-token audio
Full datasheets, every price and sourceInkling-Small ↗
Foresight
Play Foresight yourselfAnticipating 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.
Inkling-Small 30.2/100Rank 29/49

Points per level
Latch
Play Latch yourselfCooperative 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.
Fledge AlphaNo run
Inkling-Small 34.7/100Rank 34/50

Points per level
Newton's Mirror
Same task instructionsPhysics, perspective and recursive reflections, tested together. Explore the test ↗
Fledge Alpha 16.4/100 Rank 41/53

Inkling-Small 16.4/100 Rank 41/53

The judgment
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.
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.
Score breakdown
| Category | Fledge Alpha | Inkling-Small |
|---|---|---|
| State at 600 ms | 9.0/25 | 14.0/25 |
| Camera and placement | 5.0/15 | 3.0/15 |
| Reflections | 7.5/120 | 8.0/120 |
| Materials and scale | 3.5/10 | 2.5/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
Benchmark task
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Selfie
Different task instructionsVisual construction and creative interpretation.
Fledge Alpha 61.1/100 Rank 30/53

Inkling-Small 27.5/100 Rank 51/53

The judgment
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.
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.
Score breakdown
| Category | Fledge Alpha | Inkling-Small |
|---|---|---|
| Task & likeness | 7.5/10 | 2.5/10 |
| Anatomy & construction | 6.5/10 | 1.5/10 |
| Space & placement | 7.0/10 | 3.5/10 |
| Light & reflections | 5.5/10 | 3.0/10 |
| Purposeful detail | 6.5/10 | 4.5/10 |
| Artistry & character | 4.0/10 | 3.0/10 |
| Materials & effects | 6.0/10 | 3.5/10 |
| Visual integrity | 6.5/10 | 2.0/10 |
Benchmark task
Fledge Alpha
An eager young seabird running toward the viewer tests expressive anatomy, balance and a convincing forward-moving pose.
Inkling-Small
Character scenes test expression, anatomy, materials and coherent visual construction.
Mona Lisa
Different task instructionsPrecise visual recall and portrait reconstruction.
Fledge Alpha 28.3/100 Rank 35/53

Inkling-Small 24.8/100 Rank 36/53

The judgment
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.
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.
Score breakdown
| Category | Fledge Alpha | Inkling-Small |
|---|---|---|
| Task & likeness | 3.0/10 | 2.5/10 |
| Anatomy & construction | 3.0/10 | 2.5/10 |
| Space & placement | 2.5/10 | 3.0/10 |
| Light & reflections | 2.5/10 | 2.5/10 |
| Purposeful detail | 3.0/10 | 2.0/10 |
| Artistry & character | 3.0/10 | 2.5/10 |
| Materials & effects | 2.5/10 | 2.0/10 |
| Visual integrity | 2.5/10 | 3.0/10 |
Benchmark task
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Beach
Different task instructionsCreativity, perspective and visual beauty.
Fledge Alpha 43.4/100 Rank 45/53

Inkling-Small 29.5/100 Rank 49/53

The judgment
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.
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.
Score breakdown
| Category | Fledge Alpha | Inkling-Small |
|---|---|---|
| Task & likeness | 7.5/10 | 3.5/10 |
| Anatomy & construction | 4.0/10 | 3.0/10 |
| Space & placement | 5.5/10 | 3.0/10 |
| Light & reflections | 5.0/10 | 3.0/10 |
| Purposeful detail | 3.0/10 | 3.0/10 |
| Artistry & character | 3.0/10 | 3.0/10 |
| Materials & effects | 2.5/10 | 2.5/10 |
| Visual integrity | 4.0/10 | 2.0/10 |
Benchmark task
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Ground Truth
Same task instructionsPhysical reasoning, light and visual reconstruction.
Fledge Alpha 36.8/100 Rank 32/53

Inkling-Small 28.8/100 Rank 39/53

The judgment
Fledge Alpha
This benchmark has not been assessed yet.
Inkling-Small
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 instructionsScene composition and interacting subjects.
Fledge Alpha 63.4/100 Rank 20/53

Inkling-Small 42.4/100 Rank 42/53

The judgment
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.
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.
Score breakdown
| Category | Fledge Alpha | Inkling-Small |
|---|---|---|
| Task & likeness | 8.5/10 | 4.0/10 |
| Anatomy & construction | 5.5/10 | 3.0/10 |
| Space & placement | 7.5/10 | 4.0/10 |
| Light & reflections | 6.5/10 | 5.0/10 |
| Purposeful detail | 7.0/10 | 5.5/10 |
| Artistry & character | 5.5/10 | 4.0/10 |
| Materials & effects | 7.0/10 | 5.0/10 |
| Visual integrity | 4.5/10 | 5.0/10 |
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 instructionsSubject construction and spatial relationships.
Fledge Alpha 60.5/100 Rank 34/53

Inkling-Small 36.8/100 Rank 47/53

The judgment
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.
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.
Score breakdown
| Category | Fledge Alpha | Inkling-Small |
|---|---|---|
| Task & likeness | 8.0/10 | 4.0/10 |
| Anatomy & construction | 6.0/10 | 3.0/10 |
| Space & placement | 6.5/10 | 3.0/10 |
| Light & reflections | 4.5/10 | 3.0/10 |
| Purposeful detail | 5.5/10 | 4.5/10 |
| Artistry & character | 5.0/10 | 5.0/10 |
| Materials & effects | 5.5/10 | 4.5/10 |
| Visual integrity | 6.5/10 | 3.0/10 |
Benchmark task
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.