Gemini 3.8 Flash 45.4/100Rank 20/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Gemini 3.8 Flash leads Iceman Contributor by 28.7 points on StealthMark, 47.9 to 19.2. It leads on all 9 benchmarks. Gemini 3.8 Flash scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.
See the difference ↘On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.
BENCHMARK BY BENCHMARK
DATASHEET
Gemini 3.8 Flash scores higher on StealthMark and runs 3.7× faster in our speed test.
Full datasheets, every price and sourceGemini 3.8 Flash ↗
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.


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.


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


Gemini 3.8 Flash
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.
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.
| Category | Gemini 3.8 Flash | Iceman Contributor |
|---|---|---|
| State at 600 ms | 22.5/25 | 0.5/25 |
| Camera and placement | 11.0/15 | 2.5/15 |
| Reflections | 4.5/120 | 7.5/120 |
| Materials and scale | 7.0/10 | 3.0/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Visual construction and creative interpretation.


Gemini 3.8 Flash
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.
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.
| Category | Gemini 3.8 Flash | Iceman Contributor |
|---|---|---|
| Task & likeness | 8.0/10 | 4.0/10 |
| Anatomy & construction | 6.0/10 | 3.0/10 |
| Space & placement | 6.5/10 | 4.0/10 |
| Light & reflections | 7.0/10 | 4.5/10 |
| Purposeful detail | 5.0/10 | 4.0/10 |
| Artistry & character | 3.5/10 | 4.5/10 |
| Materials & effects | 5.0/10 | 4.5/10 |
| Visual integrity | 6.5/10 | 4.0/10 |
Gemini 3.8 Flash
A luminous star-shaped creature tests expressive features, a clear silhouette and smooth colour transitions.
Iceman Contributor
Character scenes test expression, anatomy, materials and coherent visual construction.
Precise visual recall and portrait reconstruction.


Gemini 3.8 Flash
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.
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.
| Category | Gemini 3.8 Flash | Iceman Contributor |
|---|---|---|
| Task & likeness | 3.0/10 | 1.5/10 |
| Anatomy & construction | 2.0/10 | 1.5/10 |
| Space & placement | 3.5/10 | 2.5/10 |
| Light & reflections | 3.0/10 | 2.0/10 |
| Purposeful detail | 5.0/10 | 2.0/10 |
| Artistry & character | 3.0/10 | 2.0/10 |
| Materials & effects | 5.0/10 | 2.0/10 |
| Visual integrity | 1.0/10 | 3.0/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


Gemini 3.8 Flash
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.
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.
| Category | Gemini 3.8 Flash | Iceman Contributor |
|---|---|---|
| Task & likeness | 9.0/10 | 7.0/10 |
| Anatomy & construction | 7.0/10 | 3.5/10 |
| Space & placement | 7.0/10 | 6.0/10 |
| Light & reflections | 8.0/10 | 4.0/10 |
| Purposeful detail | 7.0/10 | 5.5/10 |
| Artistry & character | 7.0/10 | 3.5/10 |
| Materials & effects | 7.0/10 | 4.5/10 |
| Visual integrity | 8.0/10 | 5.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Gemini 3.8 Flash
This benchmark has not been assessed yet.
Iceman Contributor
This benchmark has not been assessed yet.
A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.
Scene composition and interacting subjects.


Gemini 3.8 Flash
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.
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.
| Category | Gemini 3.8 Flash | Iceman Contributor |
|---|---|---|
| Task & likeness | 7.0/10 | 2.0/10 |
| Anatomy & construction | 6.0/10 | 3.0/10 |
| Space & placement | 7.0/10 | 3.0/10 |
| Light & reflections | 6.5/10 | 4.0/10 |
| Purposeful detail | 7.5/10 | 3.5/10 |
| Artistry & character | 7.5/10 | 2.5/10 |
| Materials & effects | 7.5/10 | 4.0/10 |
| Visual integrity | 7.5/10 | 2.5/10 |
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.
Subject construction and spatial relationships.


Gemini 3.8 Flash
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.
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.
| Category | Gemini 3.8 Flash | Iceman Contributor |
|---|---|---|
| Task & likeness | 9.0/10 | 4.0/10 |
| Anatomy & construction | 7.5/10 | 3.5/10 |
| Space & placement | 7.5/10 | 3.5/10 |
| Light & reflections | 7.0/10 | 5.0/10 |
| Purposeful detail | 8.5/10 | 4.5/10 |
| Artistry & character | 8.0/10 | 3.5/10 |
| Materials & effects | 7.0/10 | 4.0/10 |
| Visual integrity | 8.0/10 | 3.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.