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Claude Opus 5.5 vs Gemma 4 31B

Claude Opus 5.5 scores 43.6 points higher overall (69.5 vs 25.9). 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

69.5/100
25.9/100

General Intelligence

66.2/100
13.9/100

Visual Intelligence

73.5/100
40.1/100

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.

Gemma 4 31B15.4/100

Gemma 4 31B: Newton's Mirror SVG benchmark
Researcher observations

The sphere's volume, separate airborne black blob and vertical color ordering are readable. The large, low sphere, plain surrounding planes and absent nested optical imagery leave the central geometric and reflection requirements unsupported. Paint contact and transport remain unresolved. Material credit recognizes the visible convex shading, highlights and distinct surface colors while retaining deductions for the schematic finish and oversized blobs.

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 5.5Gemma 4 31B
State at 600 ms25.0/258.0/25
Camera and placement15.0/153.0/15
Reflections46.5/1200.0/120
Materials and scale8.0/106.0/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

Claude Opus 5.575.2/100

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.

Gemma 4 31B60.9/100

Gemma 4 31B: Selfie SVG benchmark
Researcher observations

A clean, appealing luminous mascot with coherent body continuity and a readable jar-hugging pose. Rounded highlights, smooth gradients and balanced framing work well. The teardrop silhouette, modest eyes and nearly even grin only partly satisfy the character brief; sparse jar construction and simple geometry limit sophistication.

Prompt withheld

Prompt withheld.

Compare category scores
CategoryClaude Opus 5.5Gemma 4 31B
Prompt & likeness8.0/106.0/10
Anatomy & construction7.5/106.0/10
Space & placement8.0/107.5/10
Light & reflections7.5/106.5/10
Purposeful detail7.0/105.5/10
Artistry & character7.0/105.0/10
Materials & effects7.0/106.5/10
Visual integrity8.5/107.5/10

Mona Lisa

Same prompt

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

Gemma 4 31B35.1/100

Gemma 4 31B: Mona Lisa SVG benchmark
Researcher observations

The portrait is recognizable through its silhouette, palette and smile, with clean execution of simple shapes. Replication remains weak: the face and pose differ markedly, hands become fingerless ovals, clothing lacks construction, and the landscape loses its atmospheric detail. Basic gradients provide limited volume.

Benchmark task

Replicate mona-lisa as SVG

Compare category scores
CategoryClaude Opus 5.5Gemma 4 31B
Prompt & likeness6.5/103.0/10
Anatomy & construction5.5/104.0/10
Space & placement6.5/104.0/10
Light & reflections6.5/103.5/10
Purposeful detail6.5/102.0/10
Artistry & character6.0/103.5/10
Materials & effects7.0/102.5/10
Visual integrity7.0/105.5/10

Beach

Same prompt

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

Gemma 4 31B29.2/100

Gemma 4 31B: Beach SVG benchmark
Researcher observations

A coherent beach illustration with clean silhouettes, a sweeping shoreline and an effective sunset palette. Requested subjects are recognizable, but primitive animal construction, sparse detail, unsupported palm placement and schematic reflections limit drawing sophistication and physical credibility.

Benchmark task

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

Compare category scores
CategoryClaude Opus 5.5Gemma 4 31B
Prompt & likeness8.5/105.0/10
Anatomy & construction7.5/102.0/10
Space & placement7.0/105.0/10
Light & reflections7.5/102.5/10
Purposeful detail7.5/102.0/10
Artistry & character8.0/102.0/10
Materials & effects6.5/102.0/10
Visual integrity8.0/105.0/10

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.

Gemma 4 31B12.0/100

Gemma 4 31B: 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

Same prompt

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

Gemma 4 31B38.2/100

Gemma 4 31B: Raccoon SVG benchmark
Researcher observations

Clean, simple silhouettes communicate a raccoon riding on a dog. Limited animal specificity, absent steering controls and a flat platform weaken the requested scene. Small facial marks provide purposeful detail, while unresolved support, flat lighting and schematic water restrict physical coherence. Primitive but coherent construction supports basic drawing quality.

Benchmark task

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

Compare category scores
CategoryClaude Opus 5.5Gemma 4 31B
Prompt & likeness8.5/104.5/10
Anatomy & construction7.5/104.0/10
Space & placement7.5/104.0/10
Light & reflections6.0/101.0/10
Purposeful detail8.5/103.0/10
Artistry & character7.5/104.0/10
Materials & effects7.0/102.0/10
Visual integrity8.0/108.0/10

Pelican

Same prompt

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

Gemma 4 31B50.5/100

Gemma 4 31B: Pelican SVG benchmark
Researcher observations

A clean, readable illustration with balanced placement and coherent basic geometry. The sky gradient and ground shadow establish diffuse illumination. Primitive shapes and sparse detail limit artistry, while unclear leg attachment, missing pedal contact and unresolved steering weaken the riding action.

Benchmark task

Generate an SVG of a pelican riding a bicycle

Compare category scores
CategoryClaude Opus 5.5Gemma 4 31B
Prompt & likeness8.5/106.0/10
Anatomy & construction8.0/104.0/10
Space & placement7.0/106.0/10
Light & reflections6.0/105.0/10
Purposeful detail8.0/103.5/10
Artistry & character7.5/104.0/10
Materials & effects6.0/104.0/10
Visual integrity8.5/108.0/10