STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Iceman Contributor vs Inkling-Small

Inkling-Small leads Iceman Contributor by 8.4 points on StealthMark, 27.6 to 19.2. It leads on 6 of 9 benchmarks, including both games, and Iceman Contributor on 3. Inkling-Small 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
27.6/100Overall rank 43/53

General Intelligence

11.7/100
25.5/100

Visual Intelligence

31.0/100
31.1/100

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

Open or local

Open modelApache 2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Iceman Contributor
  • Inkling-Small
  • Other models
  • Median

DATASHEET

Specs and pricing

  • Iceman Contributor
  • Inkling-Small
  • Other models
  • Median
Context windowTokens per request, max output below
Iceman Contributor: Not publishedInkling-Small: 1M
Output speedTokens per second, our measurement
Iceman Contributor: 46tokens/sInkling-Small: Not measured
SizeTotal and active parameters
Iceman Contributor: Not disclosedInkling-Small: 276B12B active
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 ↗

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 49/49

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

Inkling-Small 30.2/100Rank 29/49

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

Points per level

LevelIceman ContributorInkling-Small
Level 1Second Thoughts
0 ptsOut of lives
9 ptsOut of lives
Level 2Pressure Pot
3 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
1 ptsOut of lives
8 ptsOut of lives

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 46/50

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

Inkling-Small 34.7/100Rank 34/50

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

Points per level

LevelIceman ContributorInkling-Small
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
2.8 ptsFinished early
9.8 ptsCleared
Level 3Relay vault
2.2 ptsFinished early
2.8 ptsFinished early
Level 4Passing bay
4 ptsFinished early
8 ptsFinished early
Level 5Second thoughts
5 ptsFinished early
18 ptsCleared

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.

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

CategoryIceman ContributorInkling-Small
State at 600 ms0.5/2514.0/25
Camera and placement2.5/153.0/15
Reflections7.5/1208.0/120
Materials and scale3.0/102.5/10
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.

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

CategoryIceman ContributorInkling-Small
Task & likeness4.0/102.5/10
Anatomy & construction3.0/101.5/10
Space & placement4.0/103.5/10
Light & reflections4.5/103.0/10
Purposeful detail4.0/104.5/10
Artistry & character4.5/103.0/10
Materials & effects4.5/103.5/10
Visual integrity4.0/102.0/10

Benchmark task

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

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.

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

CategoryIceman ContributorInkling-Small
Task & likeness1.5/102.5/10
Anatomy & construction1.5/102.5/10
Space & placement2.5/103.0/10
Light & reflections2.0/102.5/10
Purposeful detail2.0/102.0/10
Artistry & character2.0/102.5/10
Materials & effects2.0/102.0/10
Visual integrity3.0/103.0/10

Benchmark task

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

Beach

Different task 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.

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

CategoryIceman ContributorInkling-Small
Task & likeness7.0/103.5/10
Anatomy & construction3.5/103.0/10
Space & placement6.0/103.0/10
Light & reflections4.0/103.0/10
Purposeful detail5.5/103.0/10
Artistry & character3.5/103.0/10
Materials & effects4.5/102.5/10
Visual integrity5.0/102.0/10

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.

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

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.

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

CategoryIceman ContributorInkling-Small
Task & likeness2.0/104.0/10
Anatomy & construction3.0/103.0/10
Space & placement3.0/104.0/10
Light & reflections4.0/105.0/10
Purposeful detail3.5/105.5/10
Artistry & character2.5/104.0/10
Materials & effects4.0/105.0/10
Visual integrity2.5/105.0/10

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 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.

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

CategoryIceman ContributorInkling-Small
Task & likeness4.0/104.0/10
Anatomy & construction3.5/103.0/10
Space & placement3.5/103.0/10
Light & reflections5.0/103.0/10
Purposeful detail4.5/104.5/10
Artistry & character3.5/105.0/10
Materials & effects4.0/104.5/10
Visual integrity3.0/103.0/10

Benchmark task

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