STEALTHMARK · HEAD TO HEAD

All comparisons ↗

DeepSeek-V4.1-Flash-1017 vs Muse Spark 1.3

DeepSeek-V4.1-Flash-1017 leads Muse Spark 1.3 by 19.4 points on StealthMark, 59.2 to 39.8. It leads on 8 of 9 benchmarks, including Latch, and Muse Spark 1.3 on 1, including Foresight. DeepSeek-V4.1-Flash-1017 scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

59.2/100Overall rank 9/53
39.8/100Overall rank 34/53

General Intelligence

56.8/100
38.3/100

Visual Intelligence

63.5/100
42.3/100

Reasoning efficiency

On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.

Single-step reasoning Result quality weighed against reasoning tokens on a single problem

Multi-step reasoning Result quality weighed against reasoning tokens across connected steps, as in agentic workflows

Open or local

Open modelMIT

BENCHMARK BY BENCHMARK

Where each model leads

  • DeepSeek-V4.1-Flash-1017
  • Muse Spark 1.3
  • Other models
  • Median

DATASHEET

Specs and pricing

DeepSeek-V4.1-Flash-1017 scores higher on StealthMark and is 3.5× cheaper per output token. Both take about 1M tokens of context.

  • DeepSeek-V4.1-Flash-1017
  • Muse Spark 1.3
  • Other models
  • Median
PricePer 1M output tokens, input below
DeepSeek-V4.1-Flash-1017: $1.203.5× cheaper$0.30 inputMuse Spark 1.3: $4.25$1.25 input
Context windowTokens per request, max output below
DeepSeek-V4.1-Flash-1017: 1MTied384K max outputMuse Spark 1.3: 1MTied
Output speedTokens per second, our measurement
DeepSeek-V4.1-Flash-1017: 310Tiedtokens/sMuse Spark 1.3: 321Tiedtokens/s
SizeTotal and active parameters
DeepSeek-V4.1-Flash-1017: 763B16B activeEstimatedMuse Spark 1.3: Not disclosed
Developer
DeepSeek-AIMeta
Released
17 Oct 20262 Sep 2026
Origin
ChinaUnited States
Input → output
Text, image → textText, image, video, audio, PDF → text
Architecture
Sparse mixture-of-experts with a causal encoder-decoder design and native image understanding.Not published

Full datasheets, every price and sourceDeepSeek-V4.1-Flash-1017 ↗Muse Spark 1.3 ↗

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.

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

Survived 1 of 3
Foresight: complete playing field
Level 310 ptsTurn 15 / 20

Muse Spark 1.3 64.3/100Rank 6/47

Survived 2 of 3
Foresight: complete playing field
Level 311 ptsTurn 17 / 20

Points per level

LevelDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Level 1Second Thoughts
26 ptsSurvived
26 ptsSurvived
Level 2Pressure Pot
7 ptsOut of lives
10 ptsSurvived
Level 3Hide or Flight
10 ptsOut of lives
11 ptsOut of lives

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.

DeepSeek-V4.1-Flash-1017 73.9/100Rank 13/48

Cleared 5 of 5
Latch: complete playing field
Level 520 ptsTurn 30 / 40

Muse Spark 1.3 72.4/100Rank 26/483 of 5 levels

3 of 5 played
Latch: complete playing field
Level 318.8 ptsTurn 32 / 36

Points per level

LevelDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9.8 ptsCleared
Level 3Relay vault
19.2 ptsCleared
18.8 ptsCleared
Level 4Passing bay
16.4 ptsClearedFinished early · 3 beacons left
Pending
Level 5Second thoughts
20 ptsCleared
Not played

Newton's Mirror

Same task instructions

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

The judgment

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.

Muse Spark 1.3

The paint state is incorrectly and poorly drawn, despite a recognizable sphere-and-paint setup. The oversized sphere, oversized compact paint bodies, and blurred wall and floor images further limit the result. Isolated reflection cues provide very little support for the required repeated virtual rooms, nested spherical imagery or emitter mapping.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017Muse Spark 1.3
State at 600 ms23.0/256.0/25
Camera and placement13.5/158.5/15
Reflections34.0/1205.5/120
Materials and scale8.5/104.0/10
Floor-damage reward0.0/100.0/10

Benchmark task

A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.

Selfie

Different task instructions

Visual construction and creative interpretation.

The judgment

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.

Muse Spark 1.3

The luminous creature and geometric mirror counterpart communicate self-recognition through a coherent palette and expressive eyes. The transformed reflection is purposeful. Simple oval anatomy, ambiguous reaching-arm construction, shallow spatial staging and limited illumination of nearby surfaces keep the illustration below exceptional execution.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Task & likeness7.5/108.0/10
Anatomy & construction7.5/105.0/10
Space & placement8.0/106.5/10
Light & reflections7.0/107.0/10
Purposeful detail7.5/106.5/10
Artistry & character8.0/105.5/10
Materials & effects7.5/106.5/10
Visual integrity6.5/107.5/10

Benchmark task

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.

Muse Spark 1.3

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.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

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.

Muse Spark 1.3

Dark hair, a restrained smile and overlapping hands suggest Mona Lisa, but replication is weak. The face is markedly elongated, the hands are oval pads with faint finger strokes, and the atmospheric landscape is absent. Soft gradients provide basic volume, while the frontal symmetry, shallow space and sparse clothing detail limit the portrait’s drawing quality.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Task & likeness5.0/101.0/10
Anatomy & construction5.0/101.5/10
Space & placement6.0/101.5/10
Light & reflections6.0/101.5/10
Purposeful detail5.5/101.0/10
Artistry & character5.5/101.5/10
Materials & effects5.5/101.5/10
Visual integrity6.0/103.0/10

Benchmark task

An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.

Beach

Same task instructions

Creativity, perspective and visual beauty.

The judgment

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.

Muse Spark 1.3

The warm sunset, framing palms and colorful beach accessories create an appealing scene with the requested animals, birds and reflections. Construction remains schematic: the raised hand misses the kite string, and a doglike silhouette hangs above the water without clear support. The sun reflection establishes a focal path, but shadows and materials lack depth. An unexplained horizontal bar crosses the sun.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Task & likeness7.0/106.5/10
Anatomy & construction5.5/103.0/10
Space & placement5.5/105.5/10
Light & reflections6.0/106.5/10
Purposeful detail6.5/105.0/10
Artistry & character5.0/103.5/10
Materials & effects5.5/103.0/10
Visual integrity4.5/103.5/10

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

Ground Truth

Same task instructions

Physical reasoning, light and visual reconstruction.

The judgment

DeepSeek-V4.1-Flash-1017

This benchmark has not been assessed yet.

Muse Spark 1.3

This benchmark has not been assessed yet.

Benchmark task

A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.

Raccoon

Different task instructions

Scene composition and interacting subjects.

The judgment

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.

Muse Spark 1.3

The raccoon clearly rides on the dog's back, and the dog's paws reach the jet ski controls. Expressive faces and bright colors make the scene appealing. Simplified joints, crowded steering geometry and shallow hull perspective limit construction. The sun has no corresponding water reflection, and the splash shapes convey speed more clearly than convincing displacement.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Task & likeness8.0/108.5/10
Anatomy & construction7.0/106.5/10
Space & placement7.0/107.0/10
Light & reflections6.5/105.0/10
Purposeful detail7.0/106.5/10
Artistry & character7.0/105.5/10
Materials & effects6.5/106.0/10
Visual integrity8.0/107.5/10

Benchmark task

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.

Pelican

Same task instructions

Subject construction and spatial relationships.

The judgment

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.

Muse Spark 1.3

The pelican and bicycle are immediately recognizable, with an expressive face, bold bill and cheerful composition. Both legs connect to the body and reach pedal-like supports, but articulation, saddle support and wing contact with the handlebar remain unclear. Wheel alignment and layering are coherent. Simple landscape shapes, generic shadows and limited material variation constrain the finish.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017Muse Spark 1.3
Task & likeness8.5/108.5/10
Anatomy & construction7.0/106.0/10
Space & placement7.5/107.0/10
Light & reflections6.5/106.0/10
Purposeful detail7.5/107.0/10
Artistry & character7.0/105.5/10
Materials & effects7.0/106.5/10
Visual integrity7.5/107.0/10

Benchmark task

A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.