STEALTHMARK · HEAD TO HEAD

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Gemini 3.8 Flash vs Gemma 4 31B

Gemini 3.8 Flash scores 18.6 points higher overall (44.5 vs 25.9). Gemini 3.8 Flash scores higher on Beach, with its largest category advantage in anatomy & construction.

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All results ↗
All results ↗

Overall StealthMark

44.5/100
25.9/100

General Intelligence

35.3/100
13.9/100

Visual Intelligence

55.6/100
40.1/100

Newton's Mirror

Same prompt

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

Gemini 3.8 Flash30.3/100

Gemini 3.8 Flash: Newton's Mirror SVG benchmark
Researcher observations

Crimson is carried well down the camera-facing surface, supporting its earlier interaction. The depiction remains highly simplified, with imperfect material rendering. Isolated wall and floor images and a few highlights provide scant reflective evidence; displaced first reflections, missing receding chains and absent nested sphere and emitter imagery leave the room's optical structure largely unsupported.

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
CategoryGemini 3.8 FlashGemma 4 31B
State at 600 ms22.5/258.0/25
Camera and placement11.0/153.0/15
Reflections4.5/1200.0/120
Materials and scale7.0/106.0/10
Floor-damage reward0.0/100.0/10

Selfie

Different prompts

Gemini 3.8 Flash59.0/100

Gemini 3.8 Flash: Selfie SVG benchmark
Researcher observations

The dominant four-point silhouette, luminous color progression, raised brows and enormous grin closely fulfill the brief. Attached, secondary limbs support the exuberant expression. Clean facial drawing and glossy eyes give strong character, while shallow depth, minimally articulated extremities and visible steps in the outer glow limit refinement.

Benchmark task

Draw a glowing four-point star creature with big eyes and an exaggerated grin. Blend blue, purple and pink across its body and add a few tiny sparkles. Keep its star shape easy to recognize.

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
CategoryGemini 3.8 FlashGemma 4 31B
Prompt & likeness8.0/106.0/10
Anatomy & construction6.0/106.0/10
Space & placement6.5/107.5/10
Light & reflections7.0/106.5/10
Purposeful detail5.0/105.5/10
Artistry & character3.5/105.0/10
Materials & effects5.0/106.5/10
Visual integrity6.5/107.5/10

Mona Lisa

Same prompt

Gemini 3.8 Flash29.8/100

Gemini 3.8 Flash: Mona Lisa SVG benchmark
Researcher observations

The dark clothing, overlapping hands and hazy landscape make the Mona Lisa reference recognizable. Replication is limited by the frontal, elongated face, heavy mouth and chin, and poorly resolved hands, wrists and forearm. Soft shading gives some volume, but muddy transitions, blunt landscape shapes and rigid facial modeling weaken the portrait’s expression and painterly character.

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
CategoryGemini 3.8 FlashGemma 4 31B
Prompt & likeness3.0/103.0/10
Anatomy & construction2.0/104.0/10
Space & placement3.5/104.0/10
Light & reflections3.0/103.5/10
Purposeful detail5.0/102.0/10
Artistry & character3.0/103.5/10
Materials & effects5.0/102.5/10
Visual integrity1.0/105.5/10

Beach

Same prompt

Gemini 3.8 Flash75.1/100

Gemini 3.8 Flash: Beach SVG benchmark
Researcher observations

A vivid purple-and-gold sunset anchors an appealing beach composition with dolphins, birds, a turtle and playful accessories. Palm silhouettes frame the bright reflection effectively. Sparse animal anatomy, wirelike palm foliage, conspicuously regular reflection bands and limited surface texture keep the execution below exceptional.

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
CategoryGemini 3.8 FlashGemma 4 31B
Prompt & likeness9.0/105.0/10
Anatomy & construction7.0/102.0/10
Space & placement7.0/105.0/10
Light & reflections8.0/102.5/10
Purposeful detail7.0/102.0/10
Artistry & character7.0/102.0/10
Materials & effects7.0/102.0/10
Visual integrity8.0/105.0/10

Ground Truth

Same prompt

Gemini 3.8 Flash41.1/100

Gemini 3.8 Flash: 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

Gemini 3.8 Flash68.4/100

Gemini 3.8 Flash: Raccoon SVG benchmark
Researcher observations

Expressive animals, a bold diagonal hull and sweeping spray create an appealing action scene. The raccoon's support on the dog's back is unclear, and the dog lacks a readable paw-to-control grip and connected steering assembly. Clean graphic shapes and lively accessories are stronger than the anatomical construction. Sunset illumination and reflections remain largely decorative.

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
CategoryGemini 3.8 FlashGemma 4 31B
Prompt & likeness7.0/104.5/10
Anatomy & construction5.5/104.0/10
Space & placement7.0/104.0/10
Light & reflections6.5/101.0/10
Purposeful detail7.5/103.0/10
Artistry & character7.5/104.0/10
Materials & effects7.5/102.0/10
Visual integrity8.0/108.0/10

Pelican

Same prompt

Gemini 3.8 Flash78.8/100

Gemini 3.8 Flash: Pelican SVG benchmark
Researcher observations

The pelican’s enormous bill, lively feathers and orange bicycle create a clear, appealing composition. Basket contents, spokes and facial details reward inspection. Both legs connect to the body, but foot-to-pedal placement and wing-to-handlebar contact are ambiguous. Bicycle mechanics and lighting remain schematic, limiting an otherwise polished illustration.

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
CategoryGemini 3.8 FlashGemma 4 31B
Prompt & likeness9.0/106.0/10
Anatomy & construction7.5/104.0/10
Space & placement7.5/106.0/10
Light & reflections7.0/105.0/10
Purposeful detail8.5/103.5/10
Artistry & character8.0/104.0/10
Materials & effects7.0/104.0/10
Visual integrity8.0/108.0/10