STEALTHMARK · HEAD TO HEAD

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Claude Opus 5.5 vs Mai Thinking 1

Claude Opus 5.5 scores 50.2 points higher overall (69.7 vs 19.5). Claude Opus 5.5 scores higher on Newton's Mirror, with its largest category advantage in reflections.

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All results ↗

Overall StealthMark

69.7/100
19.5/100

General Intelligence

66.2/100
10.0/100

Visual Intelligence

73.9/100
30.8/100

Newton's Mirror

Same prompt

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

Claude Opus 5.555.7/100

Claude Opus 5.5: Newton's Mirror SVG benchmark
Researcher observations

Open lateral sightlines, first reflected silhouettes and near-field planar panel placement are convincing. Missing outer chains, truncated repetitions and absent nested spherical room and emitter imagery remain the main weaknesses.

Benchmark task

A shiny steel ball spins in a room with mirrored walls and a mirrored floor. Red, cyan and black paint float above it. Gravity suddenly switches on. Draw the scene a moment later, as the ball drops and paint begins landing on its spinning surface. Show the reflections repeating through the room.

Mai Thinking 115.7/100

Mai Thinking 1: Newton's Mirror SVG benchmark
Researcher observations

The small paint features and convex shading deserve moderate material credit. The sphere remains undersized and low, with black unusually close to its apex. Crimson and cyan do not establish the required impact histories. Faint reflected echoes supply limited optical evidence, while the defining recursive room, nested sphere and emitter structures remain unestablished.

Benchmark task

A shiny steel ball spins in a room with mirrored walls and a mirrored floor. Red, cyan and black paint float above it. Gravity suddenly switches on. Draw the scene a moment later, as the ball drops and paint begins landing on its spinning surface. Show the reflections repeating through the room.

Compare category scores
CategoryClaude Opus 5.5Mai Thinking 1
State at 600 ms25.0/257.5/25
Camera and placement15.0/153.5/15
Reflections46.5/1204.0/120
Materials and scale8.0/105.0/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

Claude Opus 5.577.6/100

Claude Opus 5.5: Selfie SVG benchmark
Researcher observations

The centered coral squid has a friendly, restrained expression and a balanced radial silhouette within a cream arch. Smooth curves and soft shading give it an appealing matte finish. The mantle is more elongated than compact, the upper arms are visually ambiguous, and the two hanging tentacles read somewhat like legs. Clean execution supports a strong stylized illustration.

Benchmark task

Draw a calm coral-red squid with eight thick arms spreading around it like flower petals. Keep the shape balanced and simple, with soft shading and a friendly face.

Mai Thinking 146.3/100

Mai Thinking 1: Selfie SVG benchmark
Researcher observations

A recognizable lantern-and-moth illustration with appealing coloured wings and tidy outer contours. Simple construction, a small focal subject and crowded overlaps limit character and depth. The face, six-leg anatomy, seedling and antenna-driven watering joke remain insufficiently readable.

Prompt withheld

Prompt withheld.

Compare category scores
CategoryClaude Opus 5.5Mai Thinking 1
Prompt & likeness8.0/104.0/10
Anatomy & construction7.5/104.5/10
Space & placement8.0/105.0/10
Light & reflections7.5/104.5/10
Purposeful detail7.5/104.0/10
Artistry & character8.0/105.0/10
Materials & effects7.5/105.0/10
Visual integrity8.5/106.0/10

Mona Lisa

Different prompts

Claude Opus 5.562.5/100

Claude Opus 5.5: Mona Lisa SVG benchmark
Researcher observations

The portrait preserves the recognizable composition, dark veil, folded hands and distant landscape. Replication is limited by the elongated face and neck, conspicuous eyes and simplified smile. Hands remain connected but their rounded fingers and wrists lack convincing anatomy. Restrained colors create cohesion; shallow modeling and pervasive mottling weaken volume and painterly subtlety.

Benchmark task

Replicate mona-lisa as SVG

Mai Thinking 111.8/100

Mai Thinking 1: Mona Lisa SVG benchmark
Researcher observations

A recognizable Mona Lisa motif emerges from dark hair, a pale face and a landscape band. Replication remains weak: the oversized frontal head, broad smile, unresolved torso and missing crossed-hand anatomy diverge substantially from the reference. Simple fills and sparse strokes provide limited volume, material definition or painterly complexity.

Benchmark task

Generate an SVG of mona-lisa

Compare category scores
CategoryClaude Opus 5.5Mai Thinking 1
Prompt & likeness6.5/101.0/10
Anatomy & construction5.5/100.5/10
Space & placement6.5/101.0/10
Light & reflections6.5/101.5/10
Purposeful detail6.5/101.0/10
Artistry & character6.0/101.5/10
Materials & effects7.0/100.5/10
Visual integrity7.0/103.0/10

Beach

Different prompts

Claude Opus 5.577.0/100

Claude Opus 5.5: Beach SVG benchmark
Researcher observations

A lively, well-composed beach illustration with rich sunset colors, recognizable animals and appealing accessories. The sun reflection establishes a strong central focus. Clean silhouettes and small details reward inspection, though simplified animal construction, uneven contact shadows and mostly flat materials limit depth and realism.

Benchmark task

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections

Mai Thinking 144.2/100

Mai Thinking 1: Beach SVG benchmark
Researcher observations

A coherent, cheerful beach scene with balanced placement, clean shapes and controlled sunset colours. Animals, birds and playful accessories are recognizable, but basic dolphin construction, weak grounding, schematic reflections and sparse material detail limit the drawing's accomplishment.

Benchmark task

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections

Compare category scores
CategoryClaude Opus 5.5Mai Thinking 1
Prompt & likeness8.5/106.0/10
Anatomy & construction7.5/104.0/10
Space & placement7.0/105.0/10
Light & reflections7.5/104.0/10
Purposeful detail7.5/104.5/10
Artistry & character8.0/104.0/10
Materials & effects6.5/103.5/10
Visual integrity8.0/104.5/10

Ground Truth

Same prompt

Claude Opus 5.580.2/100

Claude Opus 5.5: Ground Truth SVG benchmark
Benchmark task

A dark steel room has four pillars and two warm ceiling lights. A wooden plank is placed over a computer mouse, with a blueberry on the plank above it. Draw the scene a few seconds later, showing how the objects settle and how the light, shadows and surfaces look.

Mai Thinking 11.8/100

Mai Thinking 1: Ground Truth SVG benchmark
Benchmark task

A dark steel room has four pillars and two warm ceiling lights. A wooden plank is placed over a computer mouse, with a blueberry on the plank above it. Draw the scene a few seconds later, showing how the objects settle and how the light, shadows and surfaces look.

Raccoon

Different prompts

Claude Opus 5.576.0/100

Claude Opus 5.5: Raccoon SVG benchmark
Researcher observations

The masked raccoon clearly rides the dog's back, and the dog's forward paw reaches the steering grip. Expressive faces, vivid colors and sweeping wakes create an appealing illustration. Connected limbs remain schematic, as does the small steering assembly. The broad hull and flat foam weaken water contact; the glowing sun lacks a corresponding reflection or convincing cast shadows.

Benchmark task

Generate an SVG: A raccoon sits on a dog's back while the dog steers a jet ski

Mai Thinking 137.3/100

Mai Thinking 1: Raccoon SVG benchmark
Researcher observations

The recognizable raccoon and clean, shaded forms make a readable cartoon. The dog's steering remains undemonstrated, while ambiguous seating contacts and a minimally constructed craft weaken the central interaction. Controlled gradients and edges deserve credit, but anatomy, purposeful detail and water displacement remain basic.

Benchmark task

SVG of a raccoon that sits on a dog's back while the dog steers a jet ski

Compare category scores
CategoryClaude Opus 5.5Mai Thinking 1
Prompt & likeness8.5/104.0/10
Anatomy & construction7.5/102.5/10
Space & placement7.5/105.0/10
Light & reflections6.0/104.0/10
Purposeful detail8.5/103.5/10
Artistry & character7.5/103.5/10
Materials & effects7.0/104.0/10
Visual integrity8.0/106.0/10

Pelican

Different prompts

Claude Opus 5.576.0/100

Claude Opus 5.5: Pelican SVG benchmark
Researcher observations

The recognizable pelican, orderly bicycle wheels and harmonious sunset create an appealing illustration. Both legs connect to the body and reach pedals; no clear detached or inverted parts appear. Steering contact and seating support are less convincing, while the drivetrain remains schematic. Crisp outlines give a clean finish, but limited shading and flat surfaces leave the scene with modest depth.

Benchmark task

Generate an SVG of a pelican riding a bicycle

Mai Thinking 156.5/100

Mai Thinking 1: Pelican SVG benchmark
Researcher observations

A recognizable pelican and bicycle combine clean rounded forms, expressive facial details and effective surface shading. Aligned wheels and soft shadows establish placement, but unresolved pedal engagement, absent steering contact and sparse drivetrain construction weaken the riding action. Limited feather complexity and shallow space constrain an otherwise appealing illustration.

Benchmark task

Generate an SVG of a pelican riding a bicycle

Compare category scores
CategoryClaude Opus 5.5Mai Thinking 1
Prompt & likeness8.5/107.0/10
Anatomy & construction8.0/104.5/10
Space & placement7.0/105.5/10
Light & reflections6.0/107.0/10
Purposeful detail8.0/105.0/10
Artistry & character7.5/105.0/10
Materials & effects6.0/104.5/10
Visual integrity8.5/107.0/10