STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Iceman Contributor vs Qwen3.8-27B

Qwen3.8-27B leads Iceman Contributor by 32.5 points on StealthMark, 51.7 to 19.2. It leads on all 9 benchmarks. Qwen3.8-27B 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
51.7/100Overall rank 14/53

General Intelligence

11.7/100
46.2/100

Visual Intelligence

31.0/100
61.4/100

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

Open or local

Local modelOpen model · Apache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Iceman Contributor
  • Qwen3.8-27B
  • Other models
  • Median

DATASHEET

Specs and pricing

Qwen3.8-27B scores higher on StealthMark and runs 1.7× faster in our speed test.

  • Iceman Contributor
  • Qwen3.8-27B
  • Other models
  • Median
PricePer 1M output tokens, input below
Iceman Contributor: No list priceQwen3.8-27B: $1.70$0.42 input
Context windowTokens per request, max output below
Iceman Contributor: Not publishedQwen3.8-27B: 1M128K max output
Output speedTokens per second, our measurement
Iceman Contributor: 46tokens/sQwen3.8-27B: 781.7× fastertokens/s
SizeTotal and active parameters
Iceman Contributor: Not disclosedQwen3.8-27B: 27BAll activeEstimated
Developer
Not publishedQwen
Released
Not published14 Aug 2026
Origin
Not publishedChina
Input → output
Not publishedText, image, video → text
Architecture
Not publishedDense causal language model with vision encoder; hybrid Gated DeltaNet and gated attention; MTP-trained

Full datasheets, every price and sourceQwen3.8-27B ↗

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

Qwen3.8-27B 63.0/100Rank 7/47

Survived 1 of 3
Foresight: complete playing field
Level 311 ptsTurn 16 / 20

Points per level

LevelIceman ContributorQwen3.8-27B
Level 1Second Thoughts
0 ptsOut of lives
26 ptsSurvived
Level 2Pressure Pot
3 ptsOut of lives
12 ptsOut of lives
Level 3Hide or Flight
1 ptsOut of lives
11 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 44/48

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

Qwen3.8-27B 38.6/100Rank 28/48

Cleared 2 of 5
Latch: complete playing field
Level 515.8 ptsTurn 31 / 40

Points per level

LevelIceman ContributorQwen3.8-27B
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
11.2 ptsFinished early
Level 4Passing bay
4 ptsFinished early
13.2 ptsFinished early
Level 5Second thoughts
5 ptsFinished early
15.8 ptsFinished early

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.

Qwen3.8-27B

The room fills the complete 16:9 frame without visible borders or labels. Central placement fits the wider frame, and the paint colors follow the expected vertical order. Bilateral side images, diminishing echoes and an overlapping floor image provide limited mirror depth. Broad sphere surfaces lack ordered nested room imagery, while planar panel sequences and outer chains remain missing or unresolved. Soft highlights do not establish emitter mapping, while paint attachment and transport history are only partly supported.

Score breakdown

CategoryIceman ContributorQwen3.8-27B
State at 600 ms0.5/2523.0/25
Camera and placement2.5/1513.0/15
Reflections7.5/12024.0/120
Materials and scale3.0/106.5/10
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.

Qwen3.8-27B

A cohesive emerald-and-gold illustration with a gentle expression, flowing robes, luminous halo and three clearly ringed orbs. Limbs remain connected, and the asymmetric legs communicate floating. The rounded face reads somewhat bear-like; the raised palm faces outward rather than upward, and chest-hand fingers are crowded. Clean ornamentation exceeds the comparatively simple anatomical modeling and shading.

Score breakdown

CategoryIceman ContributorQwen3.8-27B
Task & likeness4.0/108.0/10
Anatomy & construction3.0/107.5/10
Space & placement4.0/108.0/10
Light & reflections4.5/107.5/10
Purposeful detail4.0/108.0/10
Artistry & character4.5/107.5/10
Materials & effects4.5/107.5/10
Visual integrity4.0/108.5/10

Benchmark task

Iceman Contributor

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

Qwen3.8-27B

A floating capybara in ornate robes tests character anatomy, layered fabric and the placement of surrounding luminous forms.

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.

Qwen3.8-27B

The centered portrait, dark clothing and overlapping hands evoke the Mona Lisa, but replication is weak. The face is excessively elongated, the eyes stare broadly, and the hands reduce to rounded masses with shallow finger marks. Soft shading creates some volume, while the landscape remains indistinct. The precise gold frame is more resolved than the portrait.

Score breakdown

CategoryIceman ContributorQwen3.8-27B
Task & likeness1.5/104.0/10
Anatomy & construction1.5/104.5/10
Space & placement2.5/104.5/10
Light & reflections2.0/105.0/10
Purposeful detail2.0/105.0/10
Artistry & character2.0/105.0/10
Materials & effects2.0/105.0/10
Visual integrity3.0/105.0/10

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.

Qwen3.8-27B

The sweeping palm, glowing sunset and purple-to-orange palette create an appealing beach composition. Birds, animals and reflections fulfill the brief, with clean silhouettes and readable small accents. Schematic anatomy, repetitive shoreline geometry and limited perspective integration constrain depth. Foreground lighting and uniform reflection bars provide atmosphere but little physical coherence.

Score breakdown

CategoryIceman ContributorQwen3.8-27B
Task & likeness7.0/108.5/10
Anatomy & construction3.5/106.5/10
Space & placement6.0/106.0/10
Light & reflections4.0/106.0/10
Purposeful detail5.5/107.0/10
Artistry & character3.5/107.0/10
Materials & effects4.5/106.5/10
Visual integrity5.0/107.0/10

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.

Qwen3.8-27B

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.

Qwen3.8-27B

The raccoon clearly rides on the dog's back, and the dog reaches the jet ski's steering grip. Cheerful expressions, a bright palette and sweeping wake make the action readable. Anatomy and machinery remain simplified, with overlapping paws and limited seat definition. Flat lighting, sparse surface detail and broad white splash shapes limit depth and finish. A clipped gray fragment interrupts the upper-left corner.

Score breakdown

CategoryIceman ContributorQwen3.8-27B
Task & likeness2.0/108.5/10
Anatomy & construction3.0/106.5/10
Space & placement3.0/107.0/10
Light & reflections4.0/105.5/10
Purposeful detail3.5/106.5/10
Artistry & character2.5/106.5/10
Materials & effects4.0/106.5/10
Visual integrity2.5/107.5/10

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.

Qwen3.8-27B

The pelican’s oversized bill, straw hat and flowing scarf create a distinctive focal character against a well-composed coastal sunset. Wheels and frame are readable, but the wings do not reach the steering, overlapping legs obscure separate pedal contacts, and the crank linkage is unclear. Clean vector shapes and restrained shading support an appealing illustration with limited physical depth.

Score breakdown

CategoryIceman ContributorQwen3.8-27B
Task & likeness4.0/108.0/10
Anatomy & construction3.5/105.5/10
Space & placement3.5/107.0/10
Light & reflections5.0/107.0/10
Purposeful detail4.5/107.5/10
Artistry & character3.5/107.5/10
Materials & effects4.0/106.5/10
Visual integrity3.0/108.0/10

Benchmark task

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