STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Inkling-Small vs Kolibri-1

Inkling-Small leads Kolibri-1 by 14.0 points on StealthMark, 27.6 to 13.6. It leads on all 7 benchmarks with results for both. Inkling-Small scores higher on Raccoon, with its largest category advantage in artistry & character.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

27.6/100Overall rank 43/53
13.6/100Overall rank 52/53

General Intelligence

25.5/100
12.3/100

Visual Intelligence

31.1/100
15.0/100

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

  • Inkling-Small
  • Kolibri-1Multi-step reasoning not measured

Open or local

Open modelApache 2.0
Local modelOpen model · Apache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Inkling-Small
  • Kolibri-1
  • Other models
  • Median

DATASHEET

Specs and pricing

Both take about 1M tokens of context.

  • Inkling-Small
  • Kolibri-1
  • Other models
  • Median
Context windowTokens per request, max output below
Inkling-Small: 1MTiedKolibri-1: 1MTied
Output speedTokens per second, our measurement
Inkling-Small: Not measuredKolibri-1: 166tokens/s
SizeTotal and active parameters
Inkling-Small: 276B12B activeKolibri-1: 78.1B3.46B active
Developer
Thinking Machines LabAleph Alpha
Released
Not published3 Oct 2026
Origin
Not publishedGermany
Input → output
Text, image, audio → textText → text
Architecture
42-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 audioMixture-of-Experts with 4:1 sliding-window-attention to global-attention pattern

Full datasheets, every price and sourceInkling-Small ↗Kolibri-1 ↗

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.

Inkling-Small 30.2/100Rank 29/49

Survived 0 of 3
Foresight: complete playing field
Level 38 ptsTurn 17 / 20

Points per level

LevelInkling-SmallKolibri-1
Level 1Second Thoughts
9 ptsOut of lives
No run
Level 2Pressure Pot
6 ptsOut of lives
No run
Level 3Hide or Flight
8 ptsOut of lives
No run

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.

Inkling-Small 34.7/100Rank 34/50

Cleared 3 of 5
Latch: complete playing field
Level 518 ptsTurn 40 / 40

Points per level

LevelInkling-SmallKolibri-1
Level 1Hold the door
5.2 ptsCleared
No run
Level 2Crossfeed
9.8 ptsCleared
No run
Level 3Relay vault
2.8 ptsFinished early
No run
Level 4Passing bay
8 ptsFinished early
No run
Level 5Second thoughts
18 ptsCleared
No run

Newton's Mirror

Same task instructions

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

The judgment

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.

Kolibri-1

A segmented gray perimeter surrounds a black field containing one large, low-positioned gray sphere and two small colored circles. Rounded volume and restrained paint scale earn partial material credit. The image does not demonstrate the required optical structure, while paint history, airborne black and settled support remain largely unresolved.

Score breakdown

CategoryInkling-SmallKolibri-1
State at 600 ms14.0/259.5/25
Camera and placement3.0/151.5/15
Reflections8.0/1200.0/120
Materials and scale2.5/103.0/10
Floor-damage reward0.0/100.0/10

Benchmark task

A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.

Selfie

Different task instructions

Visual construction and creative interpretation.

The judgment

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.

Kolibri-1

A restrained ivory, teal and green palette gives the image simple graphic coherence. Execution remains rudimentary: detached oval wings, ambiguous central anatomy and unclear feeding contact prevent a convincing hummingbird scene. The requested feather structure, botanical detail, lighting and enclosing arch are largely unresolved.

Score breakdown

CategoryInkling-SmallKolibri-1
Task & likeness2.5/102.5/10
Anatomy & construction1.5/102.0/10
Space & placement3.5/103.0/10
Light & reflections3.0/102.0/10
Purposeful detail4.5/101.5/10
Artistry & character3.0/101.5/10
Materials & effects3.5/102.0/10
Visual integrity2.0/105.5/10

Benchmark task

Inkling-Small

Character scenes test expression, anatomy, materials and coherent visual construction.

Kolibri-1

A jewel-coloured hummingbird hovering in flight tests avian anatomy, delicate structure and iridescent surface detail.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

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.

Kolibri-1

The candidate offers a clean, highly simplified frontal portrait with warm skin and dark hair. Its oversized oval face, schematic features and unresolved body provide little Mona Lisa likeness. Missing crossed hands, clothing detail and landscape remove essential parts of the original composition; smooth gradients supply only limited volume.

Score breakdown

CategoryInkling-SmallKolibri-1
Task & likeness2.5/100.5/10
Anatomy & construction2.5/100.5/10
Space & placement3.0/100.0/10
Light & reflections2.5/100.0/10
Purposeful detail2.0/100.0/10
Artistry & character2.5/100.5/10
Materials & effects2.0/100.5/10
Visual integrity3.0/100.5/10

Benchmark task

An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.

Beach

Same task instructions

Creativity, perspective and visual beauty.

The judgment

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.

Kolibri-1

A recognizable sunset beach has an appealing purple-orange gradient and clean geometric edges. Birds and animals remain unresolved, terrain obscures the relationship between shore and water, and reflections are absent. Sparse detail, flat materials and limited activity keep the drawing elementary despite its tidy rendering.

Score breakdown

CategoryInkling-SmallKolibri-1
Task & likeness3.5/102.5/10
Anatomy & construction3.0/100.5/10
Space & placement3.0/103.0/10
Light & reflections3.0/101.0/10
Purposeful detail3.0/100.5/10
Artistry & character3.0/101.0/10
Materials & effects2.5/100.5/10
Visual integrity2.0/103.0/10

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

Ground Truth

Same task instructions

Physical reasoning, light and visual reconstruction.

The judgment

Inkling-Small

This benchmark has not been assessed yet.

Kolibri-1

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 instructions

Scene composition and interacting subjects.

The judgment

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.

Kolibri-1

Clean shapes and a readable coral platform provide basic graphic clarity, but the animal construction remains fragmented. A recognizable raccoon riding the dog's back, connected steering and convincing water contact are not demonstrated. Sparse detail, flat subjects and absent movement effects support retaining the baseline category assessments.

Score breakdown

CategoryInkling-SmallKolibri-1
Task & likeness4.0/101.5/10
Anatomy & construction3.0/101.0/10
Space & placement4.0/101.0/10
Light & reflections5.0/100.0/10
Purposeful detail5.5/100.5/10
Artistry & character4.0/100.5/10
Materials & effects5.0/100.5/10
Visual integrity5.0/103.5/10

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

Same task instructions

Subject construction and spatial relationships.

The judgment

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.

Kolibri-1

Clean shapes and aligned wheels establish a readable schematic scene. Pelican likeness, riding support and bicycle mechanics remain substantially unresolved. Sparse detail and flat surfaces limit expression and volume. Strong edge and fill integrity is a separate success and does not repair the construction.

Score breakdown

CategoryInkling-SmallKolibri-1
Task & likeness4.0/101.5/10
Anatomy & construction3.0/101.5/10
Space & placement3.0/101.5/10
Light & reflections3.0/103.0/10
Purposeful detail4.5/101.5/10
Artistry & character5.0/101.0/10
Materials & effects4.5/101.0/10
Visual integrity3.0/103.5/10

Benchmark task

A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.