STEALTHMARK · HEAD TO HEAD

All comparisons ↗

DeepSeek-V4.1-Flash-1017 vs MISSINGNO.

DeepSeek-V4.1-Flash-1017 leads MISSINGNO. by 20.5 points on StealthMark, 59.2 to 38.7. It leads on all 7 benchmarks with results for both. DeepSeek-V4.1-Flash-1017 scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
Model guide ↗

Overall StealthMark

59.2/100Overall rank 9/53
38.7/100Overall rank 36/53

General Intelligence

56.8/100
35.3/100

Visual Intelligence

63.5/100
42.4/100

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

  • MISSINGNO.Multi-step reasoning not measured

Open or local

Open modelMIT

BENCHMARK BY BENCHMARK

Where each model leads

  • DeepSeek-V4.1-Flash-1017
  • MISSINGNO.
  • Other models
  • Median

DATASHEET

Specs and pricing

DeepSeek-V4.1-Flash-1017 scores higher on StealthMark. MISSINGNO. runs 2.7× faster in our speed test.

  • DeepSeek-V4.1-Flash-1017
  • MISSINGNO.
  • Other models
  • Median
PricePer 1M output tokens, input below
DeepSeek-V4.1-Flash-1017: $1.20$0.30 inputMISSINGNO.: No list price
Context windowTokens per request, max output below
DeepSeek-V4.1-Flash-1017: 1M384K max outputMISSINGNO.: Not published
Output speedTokens per second, our measurement
DeepSeek-V4.1-Flash-1017: 310tokens/sMISSINGNO.: 8462.7× fastertokens/s
SizeTotal and active parameters
DeepSeek-V4.1-Flash-1017: 763B16B activeEstimatedMISSINGNO.: Not disclosed
Developer
DeepSeek-AINot published
Released
17 Oct 2026Not published
Origin
ChinaNot published
Input → output
Text, image → textNot published
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 ↗

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

Points per level

LevelDeepSeek-V4.1-Flash-1017MISSINGNO.
Level 1Second Thoughts
26 ptsSurvived
No run
Level 2Pressure Pot
7 ptsOut of lives
No run
Level 3Hide or Flight
10 ptsOut of lives
No run

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

Points per level

LevelDeepSeek-V4.1-Flash-1017MISSINGNO.
Level 1Hold the door
5.2 ptsCleared
No run
Level 2Crossfeed
9.8 ptsCleared
No run
Level 3Relay vault
19.2 ptsCleared
No run
Level 4Passing bay
16.4 ptsClearedFinished early · 3 beacons left
No run
Level 5Second thoughts
20 ptsCleared
No run

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.

MISSINGNO.

The centered sphere, separate airborne black blob and cyan-above-crimson ordering provide limited valid structure. The colored beads do not establish the required impact and transport histories. One dim floor image supports a small part of the optical system, while the defining wall repetitions, nested sphere imagery and emitter mappings are missing. Rounded volume and some gloss earn material credit, tempered by soft surface appearance and excessive paint-bead scale.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017MISSINGNO.
State at 600 ms23.0/2519.0/25
Camera and placement13.5/157.0/15
Reflections34.0/12012.0/120
Materials and scale8.5/105.5/10
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.

MISSINGNO.

An appealing purple character with a readable pleased expression and raised-moustache joke. Smooth shading and clean contours support the simple design, but indistinct mitten grips, minimally textured curls and an uncompressed strap weaken the requested physical interaction. The jelly suggests gloss more convincingly than translucency.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017MISSINGNO.
Task & likeness7.5/105.5/10
Anatomy & construction7.5/104.5/10
Space & placement8.0/106.0/10
Light & reflections7.0/105.5/10
Purposeful detail7.5/104.5/10
Artistry & character8.0/104.5/10
Materials & effects7.5/104.0/10
Visual integrity6.5/106.0/10

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.

MISSINGNO.

A glossy purple jelly struggles with an oversized fake moustache at a playful checkpoint. The scene tests comic expression, physical contact and the appearance of a soft translucent body.

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.

MISSINGNO.

Clean contours, connected body forms and gentle gradients support a basic, coherent portrait. Likeness remains weak: the face dominates the body, the seated angle is lost, and crossed hands become dark lobes without traceable wrists or fingers. Readable facial details add some drawing complexity, but clothing, landscape and material treatment remain sparse.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017MISSINGNO.
Task & likeness5.0/101.5/10
Anatomy & construction5.0/102.5/10
Space & placement6.0/102.5/10
Light & reflections6.0/103.0/10
Purposeful detail5.5/102.0/10
Artistry & character5.5/103.5/10
Materials & effects5.5/102.0/10
Visual integrity6.0/106.0/10

Benchmark task

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

Beach

Different 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.

MISSINGNO.

A coherent sunset beach with clear requested subjects, balanced framing and clean shapes. The aligned solar reflection and warm gradients establish atmosphere. Primitive animal construction, ambiguous furniture, sparse depth cues and minimally developed surfaces limit its drawing complexity and physical richness.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017MISSINGNO.
Task & likeness7.0/107.0/10
Anatomy & construction5.5/104.0/10
Space & placement5.5/106.5/10
Light & reflections6.0/105.0/10
Purposeful detail6.5/103.0/10
Artistry & character5.0/103.0/10
Materials & effects5.5/105.0/10
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.

MISSINGNO.

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.

MISSINGNO.

The requested interaction reads clearly through recognizable animals, expressive faces and a coherent hull-water relationship. Clean curves and readable accessories give the cartoon polish. Partly unresolved grips and supporting contacts limit physical construction; modest shape complexity, weak directional lighting and schematic water constrain its finish.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017MISSINGNO.
Task & likeness8.0/108.0/10
Anatomy & construction7.0/104.5/10
Space & placement7.0/105.5/10
Light & reflections6.5/105.0/10
Purposeful detail7.0/106.0/10
Artistry & character7.0/105.0/10
Materials & effects6.5/104.5/10
Visual integrity8.0/107.0/10

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

Different 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.

MISSINGNO.

A coherent, cheerful illustration with recognizable pelican features, balanced composition, clean contours and useful small details. Its controlled curves and layered wheels demonstrate competent drawing skill. Ambiguous pedal and steering contacts, sparse drivetrain construction and weak directional lighting limit the riding mechanics and finish.

Score breakdown

CategoryDeepSeek-V4.1-Flash-1017MISSINGNO.
Task & likeness8.5/107.0/10
Anatomy & construction7.0/105.5/10
Space & placement7.5/106.0/10
Light & reflections6.5/105.0/10
Purposeful detail7.5/105.5/10
Artistry & character7.0/106.0/10
Materials & effects7.0/104.5/10
Visual integrity7.5/106.5/10

Benchmark task

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