STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Ling 3.1 Flash vs MiMo-V2.6-Pro

MiMo-V2.6-Pro leads Ling 3.1 Flash by 5.7 points on StealthMark, 47.9 to 42.2. It leads on 5 of 9 benchmarks, including both games, and Ling 3.1 Flash on 4. MiMo-V2.6-Pro scores higher on Mona Lisa, with its largest category advantage in anatomy & construction.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

42.2/100Overall rank 32/53
47.9/100Overall rank 21/53

General Intelligence

35.5/100
44.3/100

Visual Intelligence

51.2/100
54.3/100

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
Open modelMIT

BENCHMARK BY BENCHMARK

Where each model leads

  • Ling 3.1 Flash
  • MiMo-V2.6-Pro
  • Other models
  • Median

DATASHEET

Specs and pricing

MiMo-V2.6-Pro scores higher on StealthMark, is 3% cheaper per output token and takes 4× more context.

  • Ling 3.1 Flash
  • MiMo-V2.6-Pro
  • Other models
  • Median
PricePer 1M output tokens, input below
Ling 3.1 Flash: $0.90$0.30 inputMiMo-V2.6-Pro: $0.873% cheaper$0.43 input
Context windowTokens per request, max output below
Ling 3.1 Flash: 256KMiMo-V2.6-Pro: 1M4× larger128K max output
Output speedTokens per second, our measurement
Ling 3.1 Flash: 115Tiedtokens/sMiMo-V2.6-Pro: 116Tiedtokens/s
SizeTotal and active parameters
Ling 3.1 Flash: 560B25B activeMiMo-V2.6-Pro: 1.02T42B active
Developer
InclusionAIXiaomi
Released
29 Sep 202621 Sep 2026
Origin
ChinaBoth
Input → output
Text → textText, image, video, audio → text
Architecture
Hybrid-linear MoE; 72 layers (63 KDA, 9 gated MLA); 512 routed experts, 8 selected and 1 shared.Sparse Mixture-of-Experts; OpenRouter maps the route to the released Pro-RL checkpoint. The UltraSpeed edition is a separate route

Full datasheets, every price and sourceLing 3.1 Flash ↗MiMo-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.

Ling 3.1 Flash 43.1/100Rank 42/471 of 3 levels

1 of 3 played
Foresight: complete playing field
Level 26 ptsTurn 14 / 18

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

LevelLing 3.1 FlashMiMo-V2.6-Pro
Level 1Second Thoughts
Pending
4 ptsOut of lives
Level 2Pressure Pot
6 ptsOut of lives
9 ptsOut of lives
Level 3Hide or Flight
Not played
19 ptsSurvived

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.

Ling 3.1 Flash 45.9/100Rank 36/483 of 5 levels

3 of 5 played
Latch: complete playing field
Level 49.8 ptsTurn 21 / 40

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

LevelLing 3.1 FlashMiMo-V2.6-Pro
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.4 ptsCleared
9 ptsClearedFinished early · 1 beacon left
Level 3Relay vault
Pending
17.2 ptsClearedFinished early · 1 beacon left
Level 4Passing bay
9.8 ptsFinished early
16 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
Not played
20.4 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

Ling 3.1 Flash

Central placement, separate airborne black paint and the elongated crimson coating earn substantial state and placement credit. Cyan contact remains unresolved. A few isolated sphere images provide limited optical evidence, while the defining repeated mirror structure is missing. Readable opaque metallic volume and restrained paint scale justify increased material credit. Core: 61.5/170; including the floor reward: 61.5/180.

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.

Score breakdown

CategoryLing 3.1 FlashMiMo-V2.6-Pro
State at 600 ms22.0/2523.0/25
Camera and placement13.5/1512.0/15
Reflections18.0/12019.0/120
Materials and scale7.0/107.5/10
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

Ling 3.1 Flash

An appealing, coherent storybook ant with a clear expression, complete silhouette and readable signal mechanism. Clean curves and warm accents support the composition, while simplified joints, schematic hardware, limited material differentiation and modest light interaction constrain its finish.

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.

Score breakdown

CategoryLing 3.1 FlashMiMo-V2.6-Pro
Task & likeness7.5/106.5/10
Anatomy & construction7.5/105.0/10
Space & placement7.0/105.5/10
Light & reflections7.5/106.5/10
Purposeful detail7.0/106.5/10
Artistry & character7.0/105.0/10
Materials & effects6.5/106.5/10
Visual integrity8.0/106.0/10

Benchmark task

Ling 3.1 Flash

An ant tending signals in a miniature workshop tests insect anatomy, purposeful gestures and the placement of small objects in a lit environment.

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.

Mona Lisa

Same task instructions

Precise visual recall and portrait reconstruction.

The judgment

Ling 3.1 Flash

A basic, uneven Mona Lisa interpretation with a clear facial focal point, articulated eyes and modest tonal volume. Weak likeness, oversized head proportions, unclear shoulders, curled bare arms and indistinct hands limit replication. The compressed composition and rectangular torso weaken an otherwise coherent earthy palette.

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.

Score breakdown

CategoryLing 3.1 FlashMiMo-V2.6-Pro
Task & likeness2.0/103.5/10
Anatomy & construction1.5/103.5/10
Space & placement4.0/104.0/10
Light & reflections3.5/105.0/10
Purposeful detail3.5/103.0/10
Artistry & character2.0/104.0/10
Materials & effects1.5/104.0/10
Visual integrity2.0/106.0/10

Benchmark task

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

Beach

Same task instructions

Creativity, perspective and visual beauty.

The judgment

Ling 3.1 Flash

A coherent sunset illustration with harmonious color, clean silhouettes and readable beach details. Its calm composition works well, while playful activity is modest. Simplified animal anatomy, shallow shoreline layering, repetitive foliage and a geometric reflection limit drawing sophistication and naturalism.

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.

Score breakdown

CategoryLing 3.1 FlashMiMo-V2.6-Pro
Task & likeness7.5/108.5/10
Anatomy & construction6.0/105.0/10
Space & placement7.0/106.0/10
Light & reflections7.0/106.5/10
Purposeful detail6.5/106.5/10
Artistry & character6.5/105.0/10
Materials & effects6.5/106.0/10
Visual integrity6.0/106.0/10

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

Ling 3.1 Flash

This benchmark has not been assessed yet.

MiMo-V2.6-Pro

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

Same task instructions

Scene composition and interacting subjects.

The judgment

Ling 3.1 Flash

An appealing sunset cartoon with recognizable animals, expressive faces and coherent landscape layers. The sky and warm water streaks provide its strongest rendering. Ambiguous seated support, stiff forelegs, a shallow hull and an unclear steering connection limit construction. Clean shapes and readable accessories add finish, while restrained spray and flat surfaces limit material and motion effects.

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.

Score breakdown

CategoryLing 3.1 FlashMiMo-V2.6-Pro
Task & likeness7.5/107.0/10
Anatomy & construction5.5/105.0/10
Space & placement7.0/105.5/10
Light & reflections7.0/105.5/10
Purposeful detail7.0/106.0/10
Artistry & character5.5/104.0/10
Materials & effects5.5/105.5/10
Visual integrity6.0/104.5/10

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

Ling 3.1 Flash

A clean, appealing pelican illustration with a readable bicycle and coherent landscape. Bill shading, feather layers and faint wheel shadows provide modest depth. Uncertain pedal contact, simplified leg construction and limited material rendering keep the result within competent illustration quality.

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.

Score breakdown

CategoryLing 3.1 FlashMiMo-V2.6-Pro
Task & likeness7.5/106.5/10
Anatomy & construction5.5/105.0/10
Space & placement7.0/106.0/10
Light & reflections6.5/105.5/10
Purposeful detail6.0/106.0/10
Artistry & character6.5/106.0/10
Materials & effects6.5/105.5/10
Visual integrity6.0/106.0/10

Benchmark task

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