Kimi K3.1 Pro 61.1/100Rank 10/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) leads Kimi K3.1 Pro by 5.9 points on StealthMark, 62.6 to 56.7. It leads on 7 of 9 benchmarks, including Foresight, and Kimi K3.1 Pro on 2, including Latch. Union Alpha 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
Kimi K3.1 Pro takes 4× more context and runs 4.5× faster in our speed test. Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) scores higher on StealthMark.
Full datasheets, every price and sourceKimi K3.1 Pro ↗Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) ↗
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 ↗


Kimi K3.1 Pro
The settled sphere, separate airborne black paint and crimson-before-cyan interaction are supported, with a modest crimson travel overshoot. A shared downward framing displacement remains after accounting for the square canvas. The principal limitation is the reflection system: sparse sphere copies and generic curved bands omit most of the ordered mirror-room structure. Materials receive a small upward revision because bounded bright images and dark bands visibly establish some polish, while soft shading and bulky paint remain separate weaknesses.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
Recognizable near-field sphere placement and bilateral convergence provide limited optical structure. Broad gray regions interrupt lateral sightlines and truncate side-floor images. Missing outer chains, absent nested sphere imagery and incomplete planar and curved emitter mappings dominate the reflection system.
| Category | Kimi K3.1 Pro | Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) |
|---|---|---|
| State at 600 ms | 23.5/25 | 24.0/25 |
| Camera and placement | 10.5/15 | 13.5/15 |
| Reflections | 26.0/120 | 34.5/120 |
| Materials and scale | 7.0/10 | 10.0/10 |
| 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.


Kimi K3.1 Pro
The transformed reflection, attentive pose and constellation anatomy clearly communicate introspection. Purposeful fine details enrich a coherent composition. Tubular limbs, crowded lower-body overlaps, shallow depth and limited cast lighting keep the overall execution within the competent range.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
A strong futuristic emblem with clear hierarchy, controlled negative space and distinctive typography. Silver and gunmetal layers give the sweeping ribbons convincing graphic depth, while red accents remain restrained. Ambiguous concealed connections and occasionally abrupt highlight bands limit the construction and material realism.
| Category | Kimi K3.1 Pro | Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) |
|---|---|---|
| Task & likeness | 8.0/10 | 9.0/10 |
| Anatomy & construction | 5.5/10 | 7.5/10 |
| Space & placement | 6.5/10 | 8.5/10 |
| Light & reflections | 6.5/10 | 7.5/10 |
| Purposeful detail | 7.5/10 | 7.0/10 |
| Artistry & character | 7.0/10 | 7.5/10 |
| Materials & effects | 7.0/10 | 7.5/10 |
| Visual integrity | 7.0/10 | 7.0/10 |
Kimi K3.1 Pro
An imagined creature encounters its reflection. The scene tests original character design, visual self-interpretation and the relationship between a subject and its reflected image.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
An interwoven metallic emblem tests ribbon geometry, overlapping forms and the appearance of reflective metal against a dark background.
Precise visual recall and portrait reconstruction.


Kimi K3.1 Pro
A coherent, recognizable interpretation with controlled color and readable landscape layers. Replication is limited by the frontal seated construction, elongated facial proportions and oversized, weakly articulated hands. Smooth shading supplies some volume but little of the reference's subtle expression, fabric structure or atmospheric transitions.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
The centered portrait, folded hands, dark clothing and hazy landscape clearly evoke the Mona Lisa. Muted colors and soft facial shading create a coherent illustration, but replication remains schematic: the face is broad, eyes outlined, smile simplified and overlapping fingers poorly resolved. Angular landscape shapes and flat fabric limit depth and painterly richness.
| Category | Kimi K3.1 Pro | Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) |
|---|---|---|
| Task & likeness | 5.0/10 | 6.5/10 |
| Anatomy & construction | 5.0/10 | 5.0/10 |
| Space & placement | 5.5/10 | 6.5/10 |
| Light & reflections | 6.0/10 | 6.0/10 |
| Purposeful detail | 5.5/10 | 5.5/10 |
| Artistry & character | 6.0/10 | 6.5/10 |
| Materials & effects | 5.0/10 | 5.0/10 |
| Visual integrity | 6.5/10 | 7.0/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


Kimi K3.1 Pro
A coherent, playful beach illustration with readable animals, an organized composition and an aligned sunset reflection. Connected silhouettes, sand texture and atmospheric effects demonstrate controlled execution. Simplified joints, flattened foreground viewpoints and inconsistent shadows limit anatomical and spatial credibility.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
A cohesive sunset palette, sweeping shoreline and playful animals make an appealing beach illustration. The sun’s reflection establishes a clear focal axis, balanced by the palm and umbrella. Clean silhouettes and small decorative features reward inspection, though simplified anatomy, repetitive reflection bars and generic oval shadows limit volume and naturalism.
| Category | Kimi K3.1 Pro | Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) |
|---|---|---|
| Task & likeness | 8.5/10 | 9.0/10 |
| Anatomy & construction | 5.5/10 | 7.0/10 |
| Space & placement | 5.5/10 | 8.0/10 |
| Light & reflections | 6.5/10 | 7.0/10 |
| Purposeful detail | 6.5/10 | 7.0/10 |
| Artistry & character | 5.5/10 | 6.0/10 |
| Materials & effects | 6.5/10 | 6.5/10 |
| Visual integrity | 7.5/10 | 7.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Kimi K3.1 Pro
This benchmark has not been assessed yet.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
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.


Kimi K3.1 Pro
The additional comparisons support retaining the assessment. Readable steering, shaped animal contours and purposeful details coexist with simplified joints, a frontal passenger whose seated weight is weakly conveyed, and limited physical lighting. The angled craft establishes more depth than the riding pose resolves.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
Expressive animals, a readable riding arrangement and sweeping spray create an appealing cartoon. The raccoon sits convincingly on the dog's back, but the dog's paw does not clearly grip the handlebar, whose connection to the hull is unresolved. Flat lighting provides little volume or reflection. A dark rectangular strip interrupts the upper-right background.
| Category | Kimi K3.1 Pro | Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) |
|---|---|---|
| Task & likeness | 7.0/10 | 8.0/10 |
| Anatomy & construction | 5.5/10 | 6.5/10 |
| Space & placement | 6.0/10 | 7.5/10 |
| Light & reflections | 5.5/10 | 5.5/10 |
| Purposeful detail | 7.0/10 | 7.0/10 |
| Artistry & character | 6.0/10 | 7.0/10 |
| Materials & effects | 6.0/10 | 7.5/10 |
| 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.


Kimi K3.1 Pro
A characterful coastal illustration with controlled contours and varied feather, accessory and bicycle detail. Layered scenery and subtle shading enrich the presentation. Soft leg articulation, unresolved riding contacts, shallow depth and generalized lighting limit physical precision.
Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM)
The pelican is immediately recognizable, with an expressive face, convincing bill silhouette and appealing pastel composition. Both legs connect to feet, and the wing reaches the handlebar. Bicycle construction is less resolved: the far pedal lacks a clear crank connection and no chain is visible. Clean contours and orderly spokes support the illustration, while flat lighting and simplified surfaces limit depth.
| Category | Kimi K3.1 Pro | Pareto 26.9 (Union of GPT-6 Astra + DeepSeek + GLM) |
|---|---|---|
| Task & likeness | 8.5/10 | 8.0/10 |
| Anatomy & construction | 7.5/10 | 6.0/10 |
| Space & placement | 6.5/10 | 7.0/10 |
| Light & reflections | 6.5/10 | 6.0/10 |
| Purposeful detail | 7.5/10 | 6.0/10 |
| Artistry & character | 7.5/10 | 6.0/10 |
| Materials & effects | 6.5/10 | 6.0/10 |
| Visual integrity | 7.5/10 | 8.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.