STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Fledge Alpha vs Iceman Contributor

Fledge Alpha leads Iceman Contributor by 16.6 points on StealthMark, 35.8 to 19.2. It leads on 6 of the 7 benchmarks with results for both and Iceman Contributor on 1. Fledge Alpha scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
Model guide ↗
Model guide ↗

Overall StealthMark

35.8/100Overall rank 38/53
19.2/100Overall rank 47/53

General Intelligence

27.1/100
11.7/100

Visual Intelligence

45.2/100
31.0/100

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

  • Fledge AlphaMulti-step reasoning not measured

Open or local

BENCHMARK BY BENCHMARK

Where each model leads

  • Fledge Alpha
  • Iceman Contributor
  • Other models
  • Median

DATASHEET

Specs and pricing

Fledge Alpha scores higher on StealthMark and runs 35% faster in our speed test.

  • Fledge Alpha
  • Iceman Contributor
  • Other models
  • Median
Output speedTokens per second, our measurement
Fledge Alpha: 6335% fastertokens/sIceman Contributor: 46tokens/s

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

LevelFledge AlphaIceman Contributor
Level 1Second Thoughts
No run
0 ptsOut of lives
Level 2Pressure Pot
No run
3 ptsOut of lives
Level 3Hide or Flight
No run
1 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

Points per level

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

Newton's Mirror

Same task instructions

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

The judgment

Fledge Alpha

The candidate communicates a round metallic sphere, three paint colors and a separate airborne black blob. Its hovering support relationship, displaced framing and unresolved paint interaction limit physical credit. Sparse planar light ghosts and a soft sphere highlight provide little evidence for the required wall/floor repetitions and curved nested mirror imagery.

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.

Score breakdown

CategoryFledge AlphaIceman Contributor
State at 600 ms9.0/250.5/25
Camera and placement5.0/152.5/15
Reflections7.5/1207.5/120
Materials and scale3.5/103.0/10
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

Fledge Alpha

A coherent, appealing mascot with expressive eyes, a cheerful beak and a readable swept-back silhouette. Its larger forward foot and trailing feathers suggest a running stride, but the upright body, stiff legs and minimally articulated feet limit convincing motion. Clean flat shapes suit the brief, while uneven feather junctions and incomplete cream accents reduce polish.

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.

Score breakdown

CategoryFledge AlphaIceman Contributor
Task & likeness7.5/104.0/10
Anatomy & construction6.5/103.0/10
Space & placement7.0/104.0/10
Light & reflections5.5/104.5/10
Purposeful detail6.5/104.0/10
Artistry & character4.0/104.5/10
Materials & effects6.0/104.5/10
Visual integrity6.5/104.0/10

Benchmark task

Fledge Alpha

An eager young seabird running toward the viewer tests expressive anatomy, balance and a convincing forward-moving pose.

Iceman Contributor

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

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Fledge Alpha

A recognizable but basic Mona Lisa reinterpretation with a coherent silhouette and subdued palette. Curtain-like hair obscures much of the face, while elongated facial construction and oversized, minimally articulated hands substantially weaken replication. Soft shading supplies modest volume, but anatomy, landscape depth and purposeful detail remain underdeveloped.

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.

Score breakdown

CategoryFledge AlphaIceman Contributor
Task & likeness3.0/101.5/10
Anatomy & construction3.0/101.5/10
Space & placement2.5/102.5/10
Light & reflections2.5/102.0/10
Purposeful detail3.0/102.0/10
Artistry & character3.0/102.0/10
Materials & effects2.5/102.0/10
Visual integrity2.5/103.0/10

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

Fledge Alpha

A cheerful, recognizable sunset beach with a cohesive warm palette and clear accessories. Simple construction, uncertain palm support, an ambiguous upper boundary and schematic reflections limit depth and finish. The scene communicates its subject successfully but lacks the developed forms, lighting and detail of exceptional illustration.

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.

Score breakdown

CategoryFledge AlphaIceman Contributor
Task & likeness7.5/107.0/10
Anatomy & construction4.0/103.5/10
Space & placement5.5/106.0/10
Light & reflections5.0/104.0/10
Purposeful detail3.0/105.5/10
Artistry & character3.0/103.5/10
Materials & effects2.5/104.5/10
Visual integrity4.0/105.0/10

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

Fledge Alpha

This benchmark has not been assessed yet.

Iceman Contributor

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

Fledge Alpha

An appealing sunset illustration with recognizable characters and a clear riding action. Color, expression and silhouette are stronger than anatomical construction: overlapping paws obscure support, the dog's steering limb is simplified, and the vehicle controls lack definition. The wake conveys movement, while lighting and water reflections remain decorative.

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.

Score breakdown

CategoryFledge AlphaIceman Contributor
Task & likeness8.5/102.0/10
Anatomy & construction5.5/103.0/10
Space & placement7.5/103.0/10
Light & reflections6.5/104.0/10
Purposeful detail7.0/103.5/10
Artistry & character5.5/102.5/10
Materials & effects7.0/104.0/10
Visual integrity4.5/102.5/10

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

Fledge Alpha

A clear, cheerful illustration with a recognizable pelican, coherent bicycle silhouette and tidy composition. Simplified leg articulation, steering contact, mechanical detail and lighting keep it at a competent illustrative level.

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.

Score breakdown

CategoryFledge AlphaIceman Contributor
Task & likeness8.0/104.0/10
Anatomy & construction6.0/103.5/10
Space & placement6.5/103.5/10
Light & reflections4.5/105.0/10
Purposeful detail5.5/104.5/10
Artistry & character5.0/103.5/10
Materials & effects5.5/104.0/10
Visual integrity6.5/103.0/10

Benchmark task

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