STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Claude Haiku 5.5 vs Crouton Alpha

Claude Haiku 5.5 leads Crouton Alpha by 1.5 points on StealthMark, 49.5 to 48.0. It leads on 5 of 9 benchmarks, including both games, and Crouton Alpha on 4. Crouton Alpha scores higher on Raccoon, with its largest category advantage in prompt & likeness.

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All results ↗
Model guide ↗

Overall StealthMark

49.5/100Overall rank 19/56
48.0/100Overall rank 23/56

General Intelligence

47.6/100
43.5/100

Visual Intelligence

52.8/100
56.0/100

Reasoning efficiency

How many reasoning tokens a model needs for the quality it delivers.

Single-step reasoning How much it reasons to understand a task

Multi-step reasoning How much it keeps reasoning as a task goes on

  • Claude Haiku 5.5

Cost efficiency

How much Performance you get for your money.

  • Crouton AlphaNot measured

Open or local

BENCHMARK BY BENCHMARK

Where each model leads

  • Claude Haiku 5.5
  • Crouton Alpha
  • Other models
  • Median

DATASHEET

Specs and pricing

Claude Haiku 5.5 scores higher on StealthMark and runs 2.3× faster in our speed test.

  • Claude Haiku 5.5
  • Crouton Alpha
  • Other models
  • Median
PricePer 1M output tokens, input below
Claude Haiku 5.5: $0.50$0.10 inputCrouton Alpha: No list price
Context windowTokens per request, max output below
Claude Haiku 5.5: 1M128K max outputCrouton Alpha: Not published
Output speedTokens per second, our measurement
Claude Haiku 5.5: 4022.3× fastertokens/sCrouton Alpha: 175tokens/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 28/52

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

Crouton Alpha 32.3/100Rank 29/52

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

Points per level

LevelClaude Haiku 5.5Crouton Alpha
Level 1Second Thoughts
4 ptsOut of lives
3 ptsOut of lives
Level 2Pressure Pot
7 ptsOut of lives
7 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
9 ptsSurvived

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 11/53

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

Crouton Alpha 59.5/100Rank 24/53

Cleared 4 of 5
Latch: complete playing field
Level 520.2 ptsTurn 29 / 40

Points per level

LevelClaude Haiku 5.5Crouton Alpha
Level 1Hold the door
5 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9.4 ptsCleared
Level 3Relay vault
18.8 ptsCleared
11.2 ptsFinished early
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
18.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
20.6 ptsCleared
20.2 ptsCleared

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.

Crouton Alpha

The artwork establishes approximate central placement, a separate airborne black blob, and basic wall and floor sphere images. Its defining weaknesses are the largely absent recursive reflection system, missing emitter mappings, satin steel appearance and unresolved paint interaction. The black lateral wedges do not establish a separate viewport, and the hidden floor contact does not establish a gap. The category values remain unchanged.

Score breakdown

CategoryClaude Haiku 5.5Crouton Alpha
State at 600 ms25.0/2519.0/25
Camera and placement8.0/1511.0/15
Reflections24.5/12021.5/120
Materials and scale7.5/106.0/10
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.

Crouton Alpha

A cheerful, readable cartoon captures the crouton's signature expression and many specific accessories. Coherent cube geometry and foreground foreshortening support the selfie. Simple construction and flat material treatment limit its sophistication, while the tipping raft, advancing soup and unnoticed soaking remain insufficiently clear.

Score breakdown

CategoryClaude Haiku 5.5Crouton Alpha
Task & likeness6.5/106.5/10
Anatomy & construction4.0/105.5/10
Space & placement6.5/106.5/10
Light & reflections4.0/105.5/10
Purposeful detail3.5/107.0/10
Artistry & character3.5/105.0/10
Materials & effects4.5/105.5/10
Visual integrity7.0/107.5/10

Benchmark task

Claude Haiku 5.5

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

Crouton Alpha

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.

Crouton Alpha

A recognizable, coherent simplification with readable eyes, a restrained smile and modest facial volume. Frontal symmetry, an oversized head, capsule-like hands and geometric scenery substantially limit likeness, anatomy and depth. Clean contours preserve basic integrity but do not establish sophisticated construction or finish.

Score breakdown

CategoryClaude Haiku 5.5Crouton Alpha
Task & likeness3.0/104.5/10
Anatomy & construction4.0/104.0/10
Space & placement4.0/104.5/10
Light & reflections5.5/105.0/10
Purposeful detail2.5/104.0/10
Artistry & character3.5/104.5/10
Materials & effects2.5/104.0/10
Visual integrity5.5/106.0/10

Benchmark task

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

Beach

Same 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.

Crouton Alpha

A colorful, readable sunset beach scene with playful subjects and a clear central reflection. Purposeful equipment and animal details reward inspection, and the principal attachments remain intact. Basic geometric anatomy, mixed viewpoints and sparse directional shadows limit its construction and depth; smooth gradients provide atmosphere with little material differentiation.

Score breakdown

CategoryClaude Haiku 5.5Crouton Alpha
Task & likeness8.5/108.5/10
Anatomy & construction6.5/105.0/10
Space & placement7.0/105.5/10
Light & reflections7.0/105.5/10
Purposeful detail7.0/107.0/10
Artistry & character6.0/105.0/10
Materials & effects6.0/105.5/10
Visual integrity8.5/107.0/10

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

Ground Truth

Same task instructions

Physical reasoning, light and visual reconstruction.

The judgment

Claude Haiku 5.5

This benchmark has not been assessed yet.

Crouton Alpha

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

Same 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.

Crouton Alpha

A readable cartoon with expressive faces, purposeful markings and clear water motion. Hull shading and an underside shadow establish modest depth. The dog contacts the controls, but the raccoon's frontal pose leaves its seated weight unresolved. Simple anatomy and limited shared perspective constrain the drawing.

Score breakdown

CategoryClaude Haiku 5.5Crouton Alpha
Task & likeness4.0/107.0/10
Anatomy & construction3.5/105.0/10
Space & placement5.5/106.0/10
Light & reflections4.0/106.0/10
Purposeful detail5.5/106.5/10
Artistry & character4.5/105.0/10
Materials & effects5.5/105.5/10
Visual integrity4.5/106.0/10

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

Same 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.

Crouton Alpha

A recognizable, expressive pelican cyclist with purposeful feather and bicycle detail. Readable steering reach, connected machinery and modest body shading earn additional credit. Jointless legs, uncertain pedal engagement and unclear seated support keep the central action only partially resolved; shallow space and simple materials further limit the illustration.

Score breakdown

CategoryClaude Haiku 5.5Crouton Alpha
Task & likeness8.0/107.0/10
Anatomy & construction5.5/105.0/10
Space & placement6.5/105.5/10
Light & reflections5.0/105.5/10
Purposeful detail6.0/106.5/10
Artistry & character5.0/105.5/10
Materials & effects5.0/105.0/10
Visual integrity8.0/106.0/10

Benchmark task

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