STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Iceman Contributor vs Qwen3.8-Flash

Qwen3.8-Flash leads Iceman Contributor by 27.4 points on StealthMark, 46.6 to 19.2. It leads on all 9 benchmarks. Qwen3.8-Flash 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
46.6/100Overall rank 23/53

General Intelligence

11.7/100
38.5/100

Visual Intelligence

31.0/100
60.3/100

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 · Qwen Community 1.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Iceman Contributor
  • Qwen3.8-Flash
  • Other models
  • Median

DATASHEET

Specs and pricing

Qwen3.8-Flash scores higher on StealthMark and runs 1.6× faster in our speed test.

  • Iceman Contributor
  • Qwen3.8-Flash
  • Other models
  • Median
PricePer 1M output tokens, input below
Iceman Contributor: No list priceQwen3.8-Flash: $0.38$0.11 input
Context windowTokens per request, max output below
Iceman Contributor: Not publishedQwen3.8-Flash: 1M128K max output
Output speedTokens per second, our measurement
Iceman Contributor: 46tokens/sQwen3.8-Flash: 751.6× fastertokens/s
SizeTotal and active parameters
Iceman Contributor: Not disclosedQwen3.8-Flash: 180B6B activeEstimated
Developer
Not publishedQwen / Alibaba Cloud
Released
Not published26 Aug 2026
Origin
Not publishedChina
Input → output
Not publishedText, image, video → text
Architecture
Not publishedHosted Flash based on Flash-Next: sparse attention and n-gram memory; Flash-Next previews Qwen 4 architecture

Full datasheets, every price and sourceQwen3.8-Flash ↗

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-Flash 29.7/100Rank 33/47

Survived 1 of 3
Foresight: complete playing field
Level 35 ptsTurn 10 / 20

Points per level

LevelIceman ContributorQwen3.8-Flash
Level 1Second Thoughts
0 ptsOut of lives
26 ptsSurvived
Level 2Pressure Pot
3 ptsOut of lives
3 ptsOut of lives
Level 3Hide or Flight
1 ptsOut of lives
5 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-Flash 69.8/100Rank 16/48

Cleared 5 of 5
Latch: complete playing field
Level 520 ptsTurn 30 / 40

Points per level

LevelIceman ContributorQwen3.8-Flash
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
18.8 ptsCleared
Level 4Passing bay
4 ptsFinished early
17.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
5 ptsFinished early
20 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.

Qwen3.8-Flash

The full-frame illustration supports a central steel sphere, an airborne black blob and the relative ordering of cyan and crimson. Its faint floor return and symmetric repetitions provide sparse mirror structure; outer chains, large reflected images, nested imagery and emitter mapping remain deficient. Vertical framing is substantially displaced, and paint contact histories remain unresolved.

Score breakdown

CategoryIceman ContributorQwen3.8-Flash
State at 600 ms0.5/2519.0/25
Camera and placement2.5/153.5/15
Reflections7.5/1209.5/120
Materials and scale3.0/104.0/10
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.

Qwen3.8-Flash

A coherent, appealing fantasy illustration with disciplined framing, luminous teal accents and consistent ornament. Most requested elements are clearly present. The bear-like facial proportions, lowered resting hand, obscured bent-leg construction and limited fabric modeling constrain likeness and anatomical clarity; glow effects are attractive but weakly integrated with surrounding surfaces.

Score breakdown

CategoryIceman ContributorQwen3.8-Flash
Task & likeness4.0/108.0/10
Anatomy & construction3.0/107.0/10
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-Flash

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-Flash

The dark dress, crossed hands and hazy landscape evoke the Mona Lisa, but replication is limited by a generic frontal face, coarse smile and poorly articulated fingers. The gold frame has clearer definition than the portrait. Heavy mottling obscures features, while soft shading provides some volume without convincing anatomical detail.

Score breakdown

CategoryIceman ContributorQwen3.8-Flash
Task & likeness1.5/105.0/10
Anatomy & construction1.5/104.5/10
Space & placement2.5/105.5/10
Light & reflections2.0/105.5/10
Purposeful detail2.0/105.5/10
Artistry & character2.0/105.5/10
Materials & effects2.0/105.5/10
Visual integrity3.0/105.5/10

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.

Qwen3.8-Flash

Sweeping palms, coordinated sunset colors and a central reflection create an expressive beach composition with clear depth. Birds, animals and varied activities thoroughly realize the brief. Small figures and animal anatomy remain rudimentary, water movement is schematic, and contact shadows are weak. Scattered foreground details and the clipped orange disk limit the finish.

Score breakdown

CategoryIceman ContributorQwen3.8-Flash
Task & likeness7.0/109.0/10
Anatomy & construction3.5/107.0/10
Space & placement6.0/108.0/10
Light & reflections4.0/107.5/10
Purposeful detail5.5/108.5/10
Artistry & character3.5/108.0/10
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-Flash

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-Flash

The raccoon clearly rides the dog's back, with expressive features and appealing blue-orange color contrast. The dog's paws do not clearly operate connected controls, and the shallow vehicle lacks convincing jet ski construction. Clean outlines support the cartoon style, but generic shading and blurred water streaks limit depth and motion.

Score breakdown

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

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.

Qwen3.8-Flash

The pelican's expressive face, oversized bill and flowing scarf create an appealing focal point. The bicycle has recognizable frame, chain and wheel construction, but the far foot lacks a clear pedal connection and the wing's steering contact is ambiguous. Clean contours and gentle gradients support the illustration; simplified volume and weak directional shadows limit depth.

Score breakdown

CategoryIceman ContributorQwen3.8-Flash
Task & likeness4.0/108.5/10
Anatomy & construction3.5/108.0/10
Space & placement3.5/107.5/10
Light & reflections5.0/106.5/10
Purposeful detail4.5/108.0/10
Artistry & character3.5/108.0/10
Materials & effects4.0/107.0/10
Visual integrity3.0/107.5/10

Benchmark task

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