Gemma 4 26B A4B 4.1/100Rank 49/50

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-6.1 Terra leads Gemma 4 26B A4B by 43.9 points on StealthMark, 60.4 to 16.5. It leads on all 9 benchmarks. GPT-6.1 Terra scores higher on Newton's Mirror, with its largest category advantage in reflections.
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
Gemma 4 26B A4B is 17× cheaper per output token. GPT-6.1 Terra scores higher on StealthMark and takes 4× more context.
Full datasheets, every price and sourceGemma 4 26B A4B ↗GPT-6.1 Terra ↗
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 ↗


Gemma 4 26B A4B
Separate airborne black and contact-compatible paint flattening earn partial state credit. Settlement, adhesion and differentiated paint transport remain unresolved. The enlarged, low sphere and thin lamp strip substantially depart from the required camera, while the defining mirror structure is missing. Weak material appearance and oversized black paint limit material credit. The retained base total is 18/170; the floor-damage reward is 0, giving 18/180.
GPT-6.1 Terra
The sphere, airborne black and first reflected silhouettes preserve important geometry within the portrait frame. Paint deformation, contact order and forward transport are supported, with a small crimson endpoint overshoot. Major optical omissions dominate: short finite reflection sequences and smooth bands replace extensive, spatially ordered mirror imagery. Dark gloss and crisp upper emitter shapes provide partial material credit.
| Category | Gemma 4 26B A4B | GPT-6.1 Terra |
|---|---|---|
| State at 600 ms | 10.0/25 | 23.0/25 |
| Camera and placement | 2.0/15 | 11.0/15 |
| Reflections | 0.0/120 | 33.0/120 |
| Materials and scale | 2.5/10 | 7.5/10 |
| 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.


Gemma 4 26B A4B
An appealing, readable sparkle-creature with luminous colour and expressive eyes. Simple geometric construction limits sophistication, while sharp body points, ambiguous hand contact and a minimally resolved jar weaken the requested soft, plump character and treasure-presenting pose.
GPT-6.1 Terra
A balanced serpent emblem with six attached outward heads, delicate scales and softly rounded bodies. Its compact silhouette reads clearly, but central routing does not establish every alternating crossing or crisp inward corner. Repetitive texture, limited facial anatomy and weak contact shadows constrain its organic character.
| Category | Gemma 4 26B A4B | GPT-6.1 Terra |
|---|---|---|
| Task & likeness | 5.5/10 | 7.5/10 |
| Anatomy & construction | 4.5/10 | 6.5/10 |
| Space & placement | 6.0/10 | 6.5/10 |
| Light & reflections | 6.0/10 | 6.0/10 |
| Purposeful detail | 5.5/10 | 6.5/10 |
| Artistry & character | 4.0/10 | 6.5/10 |
| Materials & effects | 6.0/10 | 6.0/10 |
| Visual integrity | 7.0/10 | 6.0/10 |
Gemma 4 26B A4B
A small luminous creature proudly holding an empty glass jar tests expression, transparent materials and the balance of character and prop.
GPT-6.1 Terra
A pale serpent woven into an interlocking knot tests connected anatomy, repeated structure and readable overlaps. Organic surface detail must work with the overall geometry.
Precise visual recall and portrait reconstruction.


Gemma 4 26B A4B
The centered dark-haired portrait provides a loose reference cue, but its elongated, nearly featureless face and undifferentiated torso fall far short of replication. Crossed hands, the subtle smile, clothing structure and landscape are unresolved. Clean silhouettes and soft gradients provide limited coherence.
GPT-6.1 Terra
A recognizable interpretation with developed facial shading, shaped sleeve folds and purposeful small features. These strengths support modest upward calibration, while the frontal torso, elongated proportions, schematic finger joints and unresolved seated support keep replication and construction uneven.
| Category | Gemma 4 26B A4B | GPT-6.1 Terra |
|---|---|---|
| Task & likeness | 0.5/10 | 5.5/10 |
| Anatomy & construction | 2.0/10 | 6.5/10 |
| Space & placement | 1.0/10 | 4.5/10 |
| Light & reflections | 2.0/10 | 6.5/10 |
| Purposeful detail | 1.0/10 | 6.0/10 |
| Artistry & character | 2.0/10 | 6.0/10 |
| Materials & effects | 1.0/10 | 6.0/10 |
| Visual integrity | 4.5/10 | 6.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


Gemma 4 26B A4B
A clean, balanced sunset scene demonstrates the beach, birds and a centered reflection. Animals and play receive only minimal treatment. Coherent layers and controlled gradients support readability, but unresolved aquatic anatomy, sparse details and weak surface modeling keep the drawing basic.
GPT-6.1 Terra
A coherent sunset illustration with clear prompt fulfillment, controlled framing and varied, purposeful small details. Simplified joints, frontal staging, flattened animal forms and weakly directional shadows limit its anatomical, spatial and physical sophistication.
| Category | Gemma 4 26B A4B | GPT-6.1 Terra |
|---|---|---|
| Task & likeness | 3.5/10 | 8.5/10 |
| Anatomy & construction | 2.0/10 | 7.5/10 |
| Space & placement | 3.5/10 | 6.5/10 |
| Light & reflections | 5.0/10 | 5.5/10 |
| Purposeful detail | 1.0/10 | 7.5/10 |
| Artistry & character | 1.5/10 | 7.0/10 |
| Materials & effects | 2.0/10 | 6.5/10 |
| Visual integrity | 6.0/10 | 7.5/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Gemma 4 26B A4B
This benchmark has not been assessed yet.
GPT-6.1 Terra
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.


Gemma 4 26B A4B
The animal stack is recognizable, and clean silhouettes support a basic illustration. Steering is not depicted, while the craft's construction and water contact remain unresolved. Sparse anatomical and material detail limit the finish. The sky gradient and glow provide atmospheric lighting, but the subjects lack corresponding modeling.
GPT-6.1 Terra
A coherent cartoon with expressive animals, readable steering and a clear wake. Fine facial and hull details reward inspection. The main limits are the boatlike craft, simplified joints, weakly braced frontal raccoon and minimal directional lighting or material depth.
| Category | Gemma 4 26B A4B | GPT-6.1 Terra |
|---|---|---|
| Task & likeness | 2.5/10 | 6.5/10 |
| Anatomy & construction | 2.5/10 | 5.5/10 |
| Space & placement | 4.0/10 | 6.0/10 |
| Light & reflections | 3.5/10 | 5.0/10 |
| Purposeful detail | 2.5/10 | 7.0/10 |
| Artistry & character | 3.0/10 | 6.0/10 |
| Materials & effects | 2.0/10 | 6.0/10 |
| Visual integrity | 7.0/10 | 7.0/10 |
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.


Gemma 4 26B A4B
A clean, balanced icon suggests a pelican riding a bicycle. Continuous contours and restrained colors support its finish, but the abbreviated bill, undifferentiated body, unresolved riding contacts and incomplete bicycle mechanism limit likeness and construction. Sparse detail and flat lighting keep the drawing basic despite its clarity.
GPT-6.1 Terra
A coherent pelican cyclist with expressive proportions, purposeful feather detail and developed bicycle machinery. Continuous body contours, aligned wheels and readable pedal contacts support the scene. Simplified articulation, shallow modelling and an unresolved steering connection limit construction and placement.
| Category | Gemma 4 26B A4B | GPT-6.1 Terra |
|---|---|---|
| Task & likeness | 3.0/10 | 7.0/10 |
| Anatomy & construction | 3.0/10 | 7.0/10 |
| Space & placement | 5.0/10 | 6.0/10 |
| Light & reflections | 3.0/10 | 5.5/10 |
| Purposeful detail | 3.0/10 | 7.0/10 |
| Artistry & character | 2.5/10 | 6.5/10 |
| Materials & effects | 2.5/10 | 5.5/10 |
| Visual integrity | 5.0/10 | 6.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.