STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Iceman Contributor vs Kolibri-1

Iceman Contributor leads Kolibri-1 by 5.6 points on StealthMark, 19.2 to 13.6. It leads on 5 of the 7 benchmarks with results for both and Kolibri-1 on 2. Kolibri-1 scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
Model guide ↗
All results ↗

Overall StealthMark

19.2/100Overall rank 47/53
13.6/100Overall rank 52/53

General Intelligence

11.7/100
12.3/100

Visual Intelligence

31.0/100
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

  • Kolibri-1Multi-step reasoning not measured

Open or local

Local modelOpen model · Apache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Iceman Contributor
  • Kolibri-1
  • Other models
  • Median

DATASHEET

Specs and pricing

Iceman Contributor scores higher on StealthMark. Kolibri-1 runs 3.6× faster in our speed test.

  • Iceman Contributor
  • Kolibri-1
  • Other models
  • Median
Context windowTokens per request, max output below
Iceman Contributor: Not publishedKolibri-1: 1M
Output speedTokens per second, our measurement
Iceman Contributor: 46tokens/sKolibri-1: 1663.6× fastertokens/s
SizeTotal and active parameters
Iceman Contributor: Not disclosedKolibri-1: 78.1B3.46B active
Developer
Not publishedAleph Alpha
Released
Not published3 Oct 2026
Origin
Not publishedGermany
Input → output
Not publishedText → text
Architecture
Not publishedMixture-of-Experts with 4:1 sliding-window-attention to global-attention pattern

Full datasheets, every price and sourceKolibri-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.

Iceman Contributor 3.2/100Rank 47/47

Survived 0 of 3
Foresight: complete playing field
Level 31 ptsTurn 7 / 20

Points per level

LevelIceman ContributorKolibri-1
Level 1Second Thoughts
0 ptsOut of lives
No run
Level 2Pressure Pot
3 ptsOut of lives
No run
Level 3Hide or Flight
1 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.

Iceman Contributor 3.6/100Rank 44/48

Cleared 1 of 5
Latch: complete playing field
Level 55 ptsTurn 25 / 40

Points per level

LevelIceman ContributorKolibri-1
Level 1Hold the door
5.2 ptsCleared
No run
Level 2Crossfeed
2.8 ptsFinished early
No run
Level 3Relay vault
2.2 ptsFinished early
No run
Level 4Passing bay
4 ptsFinished early
No run
Level 5Second thoughts
5 ptsFinished early
No run

Newton's Mirror

Same task instructions

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

The judgment

Iceman Contributor

The image provides limited evidence through rounded volume, faint wall strips and floor echoes. Its main sphere is small and low, the paint beads do not establish the required interaction history, and most of the defining mirror structure is missing.

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

CategoryIceman ContributorKolibri-1
State at 600 ms0.5/259.5/25
Camera and placement2.5/151.5/15
Reflections7.5/1200.0/120
Materials and scale3.0/103.0/10
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

Iceman Contributor

The crystal crown, cyan eyes and blue faceting communicate an icy fantasy character. Anatomical readability is substantially weaker: the ringed torso, crowded facial construction and fingerless appendages do not resolve the requested childlike crouch or pouncing gesture. Sparse surface detail and shallow shading further limit the result.

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

CategoryIceman ContributorKolibri-1
Task & likeness4.0/102.5/10
Anatomy & construction3.0/102.0/10
Space & placement4.0/103.0/10
Light & reflections4.5/102.0/10
Purposeful detail4.0/101.5/10
Artistry & character4.5/101.5/10
Materials & effects4.5/102.0/10
Visual integrity4.0/105.5/10

Benchmark task

Iceman Contributor

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

Iceman Contributor

The portrait retains a dark silhouette against an earthy landscape, but replication is weak. The frontal body, elongated facial proportions and undifferentiated hands lose the reference's defining pose and likeness. Basic gradients and layered hills provide some coherence, with little anatomical or painterly detail.

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

CategoryIceman ContributorKolibri-1
Task & likeness1.5/100.5/10
Anatomy & construction1.5/100.5/10
Space & placement2.5/100.0/10
Light & reflections2.0/100.0/10
Purposeful detail2.0/100.0/10
Artistry & character2.0/100.5/10
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

Different task instructions

Creativity, perspective and visual beauty.

The judgment

Iceman Contributor

A coherent sunset beach with recognizable animals, playful details and effective palm framing. Connected silhouettes and layered scenery support modest construction and placement credit. Jointless figures, limited foreshortening and an inadequately separated sun and reflection keep the execution basic despite its attractive color.

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

CategoryIceman ContributorKolibri-1
Task & likeness7.0/102.5/10
Anatomy & construction3.5/100.5/10
Space & placement6.0/103.0/10
Light & reflections4.0/101.0/10
Purposeful detail5.5/100.5/10
Artistry & character3.5/101.0/10
Materials & effects4.5/100.5/10
Visual integrity5.0/103.0/10

Benchmark task

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

Ground Truth

Different task instructions

Physical reasoning, light and visual reconstruction.

The judgment

Iceman Contributor

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

Different task instructions

Scene composition and interacting subjects.

The judgment

Iceman Contributor

The sunset palette and red hull establish an appealing setting, but the central interaction remains unresolved. Overlapping bodies obscure the dog, supported seating is unclear, and no readable paw-to-control grip demonstrates steering. Simple construction, weak environmental lighting and loosely described spray limit depth and finish.

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

CategoryIceman ContributorKolibri-1
Task & likeness2.0/101.5/10
Anatomy & construction3.0/101.0/10
Space & placement3.0/101.0/10
Light & reflections4.0/100.0/10
Purposeful detail3.5/100.5/10
Artistry & character2.5/100.5/10
Materials & effects4.0/100.5/10
Visual integrity2.5/103.5/10

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

Different task instructions

Subject construction and spatial relationships.

The judgment

Iceman Contributor

A recognizable pelican and bicycle sit within an appealing sunset composition. Feather contours, bill shape and atmospheric colour provide character, but disconnected-looking leg origins, unclear pedal contact and unresolved steering weaken the central riding action. Consistent wheel alignment establishes a side view without resolving the rider's support.

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

CategoryIceman ContributorKolibri-1
Task & likeness4.0/101.5/10
Anatomy & construction3.5/101.5/10
Space & placement3.5/101.5/10
Light & reflections5.0/103.0/10
Purposeful detail4.5/101.5/10
Artistry & character3.5/101.0/10
Materials & effects4.0/101.0/10
Visual integrity3.0/103.5/10

Benchmark task

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