STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Claude Haiku 5.5 vs Iceman Contributor

Claude Haiku 5.5 leads Iceman Contributor by 30.3 points on StealthMark, 49.5 to 19.2. It leads on all 9 benchmarks. Claude Haiku 5.5 scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

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All results ↗
Model guide ↗

Overall StealthMark

49.5/100Overall rank 17/53
19.2/100Overall rank 47/53

General Intelligence

47.6/100
11.7/100

Visual Intelligence

52.8/100
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

  • Claude Haiku 5.5

Open or local

BENCHMARK BY BENCHMARK

Where each model leads

  • Claude Haiku 5.5
  • Iceman Contributor
  • Other models
  • Median

DATASHEET

Specs and pricing

Claude Haiku 5.5 scores higher on StealthMark and runs 8.7× faster in our speed test.

  • Claude Haiku 5.5
  • Iceman Contributor
  • Other models
  • Median
PricePer 1M output tokens, input below
Claude Haiku 5.5: $0.50$0.10 inputIceman Contributor: No list price
Context windowTokens per request, max output below
Claude Haiku 5.5: 1M128K max outputIceman Contributor: Not published
Output speedTokens per second, our measurement
Claude Haiku 5.5: 4028.7× fastertokens/sIceman Contributor: 46tokens/s
Developer
AnthropicNot published
Released
7 Oct 2026Not published
Origin
United StatesNot published
Input → output
Text, image → textNot published

Full datasheets, every price and sourceClaude Haiku 5.5 ↗

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.

Claude Haiku 5.5 34.4/100Rank 25/47

Survived 1 of 3
Foresight: complete playing field
Level 39 ptsTurn 20 / 20

Iceman Contributor 3.2/100Rank 47/47

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

Points per level

LevelClaude Haiku 5.5Iceman Contributor
Level 1Second Thoughts
4 ptsOut of lives
0 ptsOut of lives
Level 2Pressure Pot
7 ptsOut of lives
3 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
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.

Claude Haiku 5.5 78.3/100Rank 10/48

Cleared 5 of 5
Latch: complete playing field
Level 520.6 ptsTurn 27 / 40

Iceman Contributor 3.6/100Rank 44/48

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

Points per level

LevelClaude Haiku 5.5Iceman Contributor
Level 1Hold the door
5 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
2.8 ptsFinished early
Level 3Relay vault
18.8 ptsCleared
2.2 ptsFinished early
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
4 ptsFinished early
Level 5Second thoughts
20.6 ptsCleared
5 ptsFinished early

Newton's Mirror

Same task instructions

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

The judgment

Claude Haiku 5.5

The centered sphere, compact airborne black blob and differentiated cyan/crimson interaction support substantial state and placement credit. The few recognizable sphere and panel images establish limited optical relationships, but most of the required mirror system is missing. Rounded volume and localized paint warrant substantial material credit despite the soft, illustrative finish.

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

CategoryClaude Haiku 5.5Iceman Contributor
State at 600 ms25.0/250.5/25
Camera and placement8.0/152.5/15
Reflections24.5/1207.5/120
Materials and scale7.5/103.0/10
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

Claude Haiku 5.5

A coherent coral squid emblem with a compact mantle, restrained face and clean centered presentation. Its radial silhouette and floating placement work, but sharp arm tips, crowded roots and sparse surface modeling limit softness, construction and finish.

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

CategoryClaude Haiku 5.5Iceman Contributor
Task & likeness6.5/104.0/10
Anatomy & construction4.0/103.0/10
Space & placement6.5/104.0/10
Light & reflections4.0/104.5/10
Purposeful detail3.5/104.0/10
Artistry & character3.5/104.5/10
Materials & effects4.5/104.5/10
Visual integrity7.0/104.0/10

Benchmark task

Claude Haiku 5.5

A coral squid with spreading arms tests connected anatomy, balanced composition and soft surface shading.

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

Claude Haiku 5.5

A recognizable but basic Mona Lisa reinterpretation. Clean contours and smooth facial lighting provide coherence and volume. Replication remains limited by the frontal pose, elongated neck, schematic expression, unresolved crossed hands and sparse landscape. Lighting is more successful than anatomical construction and purposeful detail.

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

CategoryClaude Haiku 5.5Iceman Contributor
Task & likeness3.0/101.5/10
Anatomy & construction4.0/101.5/10
Space & placement4.0/102.5/10
Light & reflections5.5/102.0/10
Purposeful detail2.5/102.0/10
Artistry & character3.5/102.0/10
Materials & effects2.5/102.0/10
Visual integrity5.5/103.0/10

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

Claude Haiku 5.5

A cheerful, coherent beach illustration with attractive sunset colors, readable accessories and clean silhouettes. Its sun and sailboat reflections establish useful physical relationships. Simple animal construction, flattened foreground placement, sparse directional shadows and minimally differentiated surfaces limit its drawing refinement.

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

CategoryClaude Haiku 5.5Iceman Contributor
Task & likeness8.5/107.0/10
Anatomy & construction6.5/103.5/10
Space & placement7.0/106.0/10
Light & reflections7.0/104.0/10
Purposeful detail7.0/105.5/10
Artistry & character6.0/103.5/10
Materials & effects6.0/104.5/10
Visual integrity8.5/105.0/10

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

Claude Haiku 5.5

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

Claude Haiku 5.5

A tidy, appealing cartoon with recognizable animals and a pleasing sunset palette. Steering lacks visible controls, while schematic limbs and uncertain raccoon support weaken the requested interaction. Shallow vehicle construction, flat character lighting and modest displacement limit physical coherence. Clean shapes and readable identifying details remain strengths.

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

CategoryClaude Haiku 5.5Iceman Contributor
Task & likeness4.0/102.0/10
Anatomy & construction3.5/103.0/10
Space & placement5.5/103.0/10
Light & reflections4.0/104.0/10
Purposeful detail5.5/103.5/10
Artistry & character4.5/102.5/10
Materials & effects5.5/104.0/10
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

Claude Haiku 5.5

A cheerful, recognizable illustration with clean contours and a balanced warm palette. Aligned wheels and readable frame geometry establish the bicycle, but shoulder construction, feet and steering contact remain imprecise. Sparse drivetrain detail, flat materials and absent grounding shadows limit anatomical and spatial conviction.

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

CategoryClaude Haiku 5.5Iceman Contributor
Task & likeness8.0/104.0/10
Anatomy & construction5.5/103.5/10
Space & placement6.5/103.5/10
Light & reflections5.0/105.0/10
Purposeful detail6.0/104.5/10
Artistry & character5.0/103.5/10
Materials & effects5.0/104.0/10
Visual integrity8.0/103.0/10

Benchmark task

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