DeepSeek-V4.1-Flash-1017 52.9/100Rank 15/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗DeepSeek-V4.1-Flash-1017 leads LongCat-2.0 by 33.7 points on StealthMark, 59.2 to 25.5. It leads on 6 of the 7 benchmarks with results for both and LongCat-2.0 on 1. DeepSeek-V4.1-Flash-1017 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
DeepSeek-V4.1-Flash-1017 scores higher on StealthMark and runs 3.6× faster in our speed test. Both take about 1M tokens of context.
Full datasheets, every price and sourceDeepSeek-V4.1-Flash-1017 ↗LongCat-2.0 ↗
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 ↗


DeepSeek-V4.1-Flash-1017
Principal sphere and airborne-black placements are supported, and diminishing bilateral chains provide limited optical structure. Missing nested imagery, incomplete outer chains, distorted first images and sparse emitter recurrence remain the dominant weaknesses. Oversized paint bodies and unresolved cyan contact impose separate limitations.
LongCat-2.0
Cyan lies on the sphere's facing middle rather than showing its recent interaction near the apex. Separate airborne black and elongated crimson support part of the timing sequence. Small side images and an overlapping lower image provide limited reflection ordering, but recursive room structure, nested imagery and emitter mappings are largely absent. The main sphere is smaller and higher in the frame than prescribed, and the surfaces have a soft, matte appearance.
| Category | DeepSeek-V4.1-Flash-1017 | LongCat-2.0 |
|---|---|---|
| State at 600 ms | 23.0/25 | 9.5/25 |
| Camera and placement | 13.5/15 | 6.5/15 |
| Reflections | 34.0/120 | 12.5/120 |
| Materials and scale | 8.5/10 | 5.5/10 |
| 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.


DeepSeek-V4.1-Flash-1017
An expressive, intricately drawn storybook scene with a complete flowing silhouette and differentiated glossy materials. The supported main lens and continuous shrimp body make the central interaction readable, but reciprocal eye lines, facial magnification and the smaller lens grip remain ambiguous. Bright granular fringes and crowded accessory lines limit the finish.
LongCat-2.0
Amber slit eyes, a pointed beak, cream feathers and gold-trimmed black clothing establish the secretive owl rogue. The head appears frontal rather than lowered, with much of the face exposed. The centered silhouette is effective, but stiff cloak geometry, shallow facial modeling and extremely dark clothing limit depth and finish. Sparse gold markings suggest the requested circuitry only loosely.
| Category | DeepSeek-V4.1-Flash-1017 | LongCat-2.0 |
|---|---|---|
| Task & likeness | 7.5/10 | 7.0/10 |
| Anatomy & construction | 7.5/10 | 6.0/10 |
| Space & placement | 8.0/10 | 6.0/10 |
| Light & reflections | 7.0/10 | 5.5/10 |
| Purposeful detail | 7.5/10 | 6.0/10 |
| Artistry & character | 8.0/10 | 6.5/10 |
| Materials & effects | 7.5/10 | 5.5/10 |
| Visual integrity | 6.5/10 | 6.5/10 |
DeepSeek-V4.1-Flash-1017
A whale and a tiny shrimp examine one another through bubble lenses, with an octopus nearby. The scene tests interacting characters, differences in scale and transparent materials.
LongCat-2.0
A cloaked owl with luminous eyes tests expression, fabric folds and the separation of dark forms.
Precise visual recall and portrait reconstruction.


DeepSeek-V4.1-Flash-1017
A coherent graphic interpretation with controlled contours, modeled facial volume and purposeful portrait details. Replication remains limited by the frontal pose, enlarged face, altered expression and ambiguous crossed hands. Landscape layering provides depth, while schematic fabric, smooth surfaces and tonal bands constrain the finish.
LongCat-2.0
The centered portrait, slight smile, overlapping hands and distant landscape suggest Mona Lisa, but replication is weak. The face has little volume, the shoulders and torso form a narrow wedge, and the hands are fingerless ovals with unresolved wrists. Broad gray background bands provide limited depth. A bright head rim and pale hands contrast with an almost featureless dark figure.
| Category | DeepSeek-V4.1-Flash-1017 | LongCat-2.0 |
|---|---|---|
| Task & likeness | 5.0/10 | 0.5/10 |
| Anatomy & construction | 5.0/10 | 0.5/10 |
| Space & placement | 6.0/10 | 0.5/10 |
| Light & reflections | 6.0/10 | 0.5/10 |
| Purposeful detail | 5.5/10 | 0.0/10 |
| Artistry & character | 5.5/10 | 0.5/10 |
| Materials & effects | 5.5/10 | 0.0/10 |
| Visual integrity | 6.0/10 | 0.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


DeepSeek-V4.1-Flash-1017
A coherent, colorful beach illustration with controlled curves, clean layering and varied readable accessories. Castle details and small animal features strengthen its finish. Schematic airborne animals, uncertain board support, shallow architectural depth and decorative reflections limit physical coherence and drawing sophistication.
LongCat-2.0
The sunset, palms, birds and beach animals create a cheerful, readable scene. Clean silhouettes and a vivid sky establish the composition, but construction remains schematic. The right palm appears rooted in open water, shadows have limited connection to the sunset, and the sun’s reflection consists of rigid bands. Small creatures and beach equipment are recognizable but minimally developed.
| Category | DeepSeek-V4.1-Flash-1017 | LongCat-2.0 |
|---|---|---|
| Task & likeness | 7.0/10 | 7.5/10 |
| Anatomy & construction | 5.5/10 | 5.5/10 |
| Space & placement | 5.5/10 | 5.5/10 |
| Light & reflections | 6.0/10 | 6.0/10 |
| Purposeful detail | 6.5/10 | 5.0/10 |
| Artistry & character | 5.0/10 | 5.0/10 |
| Materials & effects | 5.5/10 | 3.0/10 |
| Visual integrity | 4.5/10 | 4.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


DeepSeek-V4.1-Flash-1017
This benchmark has not been assessed yet.
LongCat-2.0
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.


DeepSeek-V4.1-Flash-1017
An appealing cartoon with recognizable riders, expressive faces and a cohesive twilight palette. Clean shapes support the composition, but ambiguous limb overlaps, weak seat contact and loosely resolved steering limit physical coherence. Lighting and water effects are decorative, with modest material differentiation and drawing complexity.
LongCat-2.0
The raccoon is recognizable and expressive, with a clear mask and striped tail. The dog's anatomy is poorly resolved, and the flattened craft lacks convincing steering and seating. Feet extend below the hull, weakening the sense of support. An appealing palette, clean shapes and decorative water effects give the illustration some polish.
| Category | DeepSeek-V4.1-Flash-1017 | LongCat-2.0 |
|---|---|---|
| Task & likeness | 8.0/10 | 4.0/10 |
| Anatomy & construction | 7.0/10 | 3.0/10 |
| Space & placement | 7.0/10 | 4.5/10 |
| Light & reflections | 6.5/10 | 5.5/10 |
| Purposeful detail | 7.0/10 | 6.0/10 |
| Artistry & character | 7.0/10 | 3.0/10 |
| Materials & effects | 6.5/10 | 5.5/10 |
| Visual integrity | 8.0/10 | 5.0/10 |
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.


DeepSeek-V4.1-Flash-1017
An expressive, controlled illustration with continuous body construction, substantial bicycle detail and effective landscape depth. Unclear foot-to-pedal and wing-to-handlebar contacts limit physical conviction and local readability. Purposeful detail and composition are stronger than directional lighting and material treatment.
LongCat-2.0
A clearly recognizable pelican cycles through a well-composed coastal sunset. Warm colors, flowing scarf, feather contours and bicycle details give the illustration character. The legs connect to the body, but the farther foot's pedal contact and the wing's handlebar grip remain ambiguous. Clean vector shapes provide polish, with limited material texture and directional shading.
| Category | DeepSeek-V4.1-Flash-1017 | LongCat-2.0 |
|---|---|---|
| Task & likeness | 8.5/10 | 8.5/10 |
| Anatomy & construction | 7.0/10 | 7.0/10 |
| Space & placement | 7.5/10 | 8.0/10 |
| Light & reflections | 6.5/10 | 7.5/10 |
| Purposeful detail | 7.5/10 | 8.0/10 |
| Artistry & character | 7.0/10 | 8.5/10 |
| Materials & effects | 7.0/10 | 7.0/10 |
| Visual integrity | 7.5/10 | 8.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.