STEALTHMARK · HEAD TO HEAD

All comparisons ↗

MiMo-V2.6-Pro vs MISSINGNO.

MiMo-V2.6-Pro leads MISSINGNO. by 9.2 points on StealthMark, 47.9 to 38.7. It leads on 5 of the 7 benchmarks with results for both and MISSINGNO. on 2. MiMo-V2.6-Pro scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
Model guide ↗

Overall StealthMark

47.9/100Overall rank 21/53
38.7/100Overall rank 36/53

General Intelligence

44.3/100
35.3/100

Visual Intelligence

54.3/100
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

  • MiMo-V2.6-Pro
  • MISSINGNO.
  • Other models
  • Median

DATASHEET

Specs and pricing

MiMo-V2.6-Pro scores higher on StealthMark. MISSINGNO. runs 7.3× faster in our speed test.

  • MiMo-V2.6-Pro
  • MISSINGNO.
  • Other models
  • Median
PricePer 1M output tokens, input below
MiMo-V2.6-Pro: $0.87$0.43 inputMISSINGNO.: No list price
Context windowTokens per request, max output below
MiMo-V2.6-Pro: 1M128K max outputMISSINGNO.: Not published
Output speedTokens per second, our measurement
MiMo-V2.6-Pro: 116tokens/sMISSINGNO.: 8467.3× fastertokens/s
SizeTotal and active parameters
MiMo-V2.6-Pro: 1.02T42B activeMISSINGNO.: Not disclosed
Developer
XiaomiNot published
Released
21 Sep 2026Not published
Origin
ChinaNot published
Input → output
Text, image, video, audio → textNot published
Architecture
Sparse Mixture-of-Experts; OpenRouter maps the route to the released Pro-RL checkpoint. The UltraSpeed edition is a separate routeNot published

Full datasheets, every price and sourceMiMo-V2.6-Pro ↗

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.

MiMo-V2.6-Pro 54.6/100Rank 13/47

Survived 1 of 3
Foresight: complete playing field
Level 319 ptsTurn 20 / 20

Points per level

LevelMiMo-V2.6-ProMISSINGNO.
Level 1Second Thoughts
4 ptsOut of lives
No run
Level 2Pressure Pot
9 ptsOut of lives
No run
Level 3Hide or Flight
19 ptsSurvived
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.

MiMo-V2.6-Pro 52.6/100Rank 22/48

Cleared 5 of 5
Latch: complete playing field
Level 520.4 ptsTurn 28 / 40

Points per level

LevelMiMo-V2.6-ProMISSINGNO.
Level 1Hold the door
5.2 ptsCleared
No run
Level 2Crossfeed
9 ptsClearedFinished early · 1 beacon left
No run
Level 3Relay vault
17.2 ptsClearedFinished early · 1 beacon left
No run
Level 4Passing bay
16 ptsClearedFinished early · 3 beacons left
No run
Level 5Second thoughts
20.4 ptsCleared
No run

Newton's Mirror

Same task instructions

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

The judgment

MiMo-V2.6-Pro

The main framing and visible paint-contact story are well supported. Major optical omissions dominate the result: sparse repetitions, undersized first images, missing outer chains and absent curved nested imagery prevent a coherent mirror-room system. The metallic forms remain convincing in volume but have a soft illustrative finish.

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

CategoryMiMo-V2.6-ProMISSINGNO.
State at 600 ms23.0/2519.0/25
Camera and placement12.0/157.0/15
Reflections19.0/12012.0/120
Materials and scale7.5/105.5/10
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

MiMo-V2.6-Pro

An appealing rabbit with balanced framing, expressive eyes and purposeful costume accents. Simple frontal construction limits anatomical and spatial accomplishment. The orange orb provides an effective luminous focal point, but unreadable wrist connections weaken the requested gestures and prevent stronger integrity credit.

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

CategoryMiMo-V2.6-ProMISSINGNO.
Task & likeness6.5/105.5/10
Anatomy & construction5.0/104.5/10
Space & placement5.5/106.0/10
Light & reflections6.5/105.5/10
Purposeful detail6.5/104.5/10
Artistry & character5.0/104.5/10
Materials & effects6.5/104.0/10
Visual integrity6.0/106.0/10

Benchmark task

MiMo-V2.6-Pro

A small rabbit in an explorer outfit floats with a luminous orb. The scene tests character anatomy, pose and the placement of geometric forms around it.

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

MiMo-V2.6-Pro

The portrait is recognizable through its dark silhouette, slight smile and muted landscape, but replication is weak. A frontal, oversized head and symmetric torso replace the reference's turned seated pose; angular, separated hands omit its central gesture. Smooth shading maintains coherence while anatomical detail, depth and material rendering remain basic.

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

CategoryMiMo-V2.6-ProMISSINGNO.
Task & likeness3.5/101.5/10
Anatomy & construction3.5/102.5/10
Space & placement4.0/102.5/10
Light & reflections5.0/103.0/10
Purposeful detail3.0/102.0/10
Artistry & character4.0/103.5/10
Materials & effects4.0/102.0/10
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

MiMo-V2.6-Pro

A readable sunset beach with clear requested subjects, appealing framing and purposeful accessories. Schematic anatomy, flattened foreground objects, repetitive water highlights and sparse directional shadows limit construction and physical depth. The kite's unresolved anchor also constrains integrity.

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

CategoryMiMo-V2.6-ProMISSINGNO.
Task & likeness8.5/107.0/10
Anatomy & construction5.0/104.0/10
Space & placement6.0/106.5/10
Light & reflections6.5/105.0/10
Purposeful detail6.5/103.0/10
Artistry & character5.0/103.0/10
Materials & effects6.0/105.0/10
Visual integrity6.0/103.5/10

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

MiMo-V2.6-Pro

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

MiMo-V2.6-Pro

A coherent, cheerful cartoon with recognizable animals, readable steering contact and useful small details. The dog's orientation follows the craft more successfully than a wholly frontal pose would. Simple anatomy, weak raccoon grip and compressed seating contacts still limit physical credibility. Gradients and spray provide polish without resolving complex construction.

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

CategoryMiMo-V2.6-ProMISSINGNO.
Task & likeness7.0/108.0/10
Anatomy & construction5.0/104.5/10
Space & placement5.5/105.5/10
Light & reflections5.5/105.0/10
Purposeful detail6.0/106.0/10
Artistry & character4.0/105.0/10
Materials & effects5.5/104.5/10
Visual integrity4.5/107.0/10

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

MiMo-V2.6-Pro

The distinctive bill, continuous silhouette and detailed wheels establish a readable pelican cyclist. Shaped feathers and soft shading add character, but jointless legs, crowded pedal contacts, absent steering contact and loosely directional lighting limit the construction. The comparisons support retaining the baseline category scores.

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

CategoryMiMo-V2.6-ProMISSINGNO.
Task & likeness6.5/107.0/10
Anatomy & construction5.0/105.5/10
Space & placement6.0/106.0/10
Light & reflections5.5/105.0/10
Purposeful detail6.0/105.5/10
Artistry & character6.0/106.0/10
Materials & effects5.5/104.5/10
Visual integrity6.0/106.5/10

Benchmark task

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