STEALTHMARK · HEAD TO HEAD

All comparisons ↗

MiMo-V2.6-Pro vs Qwen3.8-Flash

MiMo-V2.6-Pro leads Qwen3.8-Flash by 1.3 points on StealthMark, 47.9 to 46.6. Qwen3.8-Flash leads on 6 of 9 benchmarks, including Latch, and MiMo-V2.6-Pro on 3, including Foresight. MiMo-V2.6-Pro scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

47.9/100Overall rank 21/53
46.6/100Overall rank 23/53

General Intelligence

44.3/100
38.5/100

Visual Intelligence

54.3/100
60.3/100

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
Local modelOpen model · Qwen Community 1.0

BENCHMARK BY BENCHMARK

Where each model leads

  • MiMo-V2.6-Pro
  • Qwen3.8-Flash
  • Other models
  • Median

DATASHEET

Specs and pricing

MiMo-V2.6-Pro scores higher on StealthMark and runs 1.5× faster in our speed test. Qwen3.8-Flash is 2.3× cheaper per output token. Both take about 1M tokens of context.

  • MiMo-V2.6-Pro
  • Qwen3.8-Flash
  • Other models
  • Median
PricePer 1M output tokens, input below
MiMo-V2.6-Pro: $0.87$0.43 inputQwen3.8-Flash: $0.382.3× cheaper$0.11 input
Context windowTokens per request, max output below
MiMo-V2.6-Pro: 1MTied128K max outputQwen3.8-Flash: 1MTied128K max output
Output speedTokens per second, our measurement
MiMo-V2.6-Pro: 1161.5× fastertokens/sQwen3.8-Flash: 75tokens/s
SizeTotal and active parameters
MiMo-V2.6-Pro: 1.02T42B activeQwen3.8-Flash: 180B6B activeEstimated
Developer
XiaomiQwen / Alibaba Cloud
Released
21 Sep 202626 Aug 2026
Origin
ChinaBoth
Input → output
Text, image, video, audio → textText, image, video → text
Architecture
Sparse Mixture-of-Experts; OpenRouter maps the route to the released Pro-RL checkpoint. The UltraSpeed edition is a separate routeHosted Flash based on Flash-Next: sparse attention and n-gram memory; Flash-Next previews Qwen 4 architecture

Full datasheets, every price and sourceMiMo-V2.6-Pro ↗Qwen3.8-Flash ↗

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

Qwen3.8-Flash 29.7/100Rank 33/47

Survived 1 of 3
Foresight: complete playing field
Level 35 ptsTurn 10 / 20

Points per level

LevelMiMo-V2.6-ProQwen3.8-Flash
Level 1Second Thoughts
4 ptsOut of lives
26 ptsSurvived
Level 2Pressure Pot
9 ptsOut of lives
3 ptsOut of lives
Level 3Hide or Flight
19 ptsSurvived
5 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.

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

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

Qwen3.8-Flash 69.8/100Rank 16/48

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

Points per level

LevelMiMo-V2.6-ProQwen3.8-Flash
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9 ptsClearedFinished early · 1 beacon left
9.8 ptsCleared
Level 3Relay vault
17.2 ptsClearedFinished early · 1 beacon left
18.8 ptsCleared
Level 4Passing bay
16 ptsClearedFinished early · 3 beacons left
17.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
20.4 ptsCleared
20 ptsCleared

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.

Qwen3.8-Flash

The full-frame illustration supports a central steel sphere, an airborne black blob and the relative ordering of cyan and crimson. Its faint floor return and symmetric repetitions provide sparse mirror structure; outer chains, large reflected images, nested imagery and emitter mapping remain deficient. Vertical framing is substantially displaced, and paint contact histories remain unresolved.

Score breakdown

CategoryMiMo-V2.6-ProQwen3.8-Flash
State at 600 ms23.0/2519.0/25
Camera and placement12.0/153.5/15
Reflections19.0/1209.5/120
Materials and scale7.5/104.0/10
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

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.

Qwen3.8-Flash

A coherent, appealing fantasy illustration with disciplined framing, luminous teal accents and consistent ornament. Most requested elements are clearly present. The bear-like facial proportions, lowered resting hand, obscured bent-leg construction and limited fabric modeling constrain likeness and anatomical clarity; glow effects are attractive but weakly integrated with surrounding surfaces.

Score breakdown

CategoryMiMo-V2.6-ProQwen3.8-Flash
Task & likeness6.5/108.0/10
Anatomy & construction5.0/107.0/10
Space & placement5.5/108.0/10
Light & reflections6.5/107.5/10
Purposeful detail6.5/108.0/10
Artistry & character5.0/107.5/10
Materials & effects6.5/107.5/10
Visual integrity6.0/108.5/10

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.

Qwen3.8-Flash

A floating capybara in ornate robes tests character anatomy, layered fabric and the placement of surrounding luminous forms.

Mona Lisa

Same 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.

Qwen3.8-Flash

The dark dress, crossed hands and hazy landscape evoke the Mona Lisa, but replication is limited by a generic frontal face, coarse smile and poorly articulated fingers. The gold frame has clearer definition than the portrait. Heavy mottling obscures features, while soft shading provides some volume without convincing anatomical detail.

Score breakdown

CategoryMiMo-V2.6-ProQwen3.8-Flash
Task & likeness3.5/105.0/10
Anatomy & construction3.5/104.5/10
Space & placement4.0/105.5/10
Light & reflections5.0/105.5/10
Purposeful detail3.0/105.5/10
Artistry & character4.0/105.5/10
Materials & effects4.0/105.5/10
Visual integrity6.0/105.5/10

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

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.

Qwen3.8-Flash

Sweeping palms, coordinated sunset colors and a central reflection create an expressive beach composition with clear depth. Birds, animals and varied activities thoroughly realize the brief. Small figures and animal anatomy remain rudimentary, water movement is schematic, and contact shadows are weak. Scattered foreground details and the clipped orange disk limit the finish.

Score breakdown

CategoryMiMo-V2.6-ProQwen3.8-Flash
Task & likeness8.5/109.0/10
Anatomy & construction5.0/107.0/10
Space & placement6.0/108.0/10
Light & reflections6.5/107.5/10
Purposeful detail6.5/108.5/10
Artistry & character5.0/108.0/10
Materials & effects6.0/106.5/10
Visual integrity6.0/107.0/10

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

MiMo-V2.6-Pro

This benchmark has not been assessed yet.

Qwen3.8-Flash

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

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.

Qwen3.8-Flash

The raccoon clearly rides the dog's back, with expressive features and appealing blue-orange color contrast. The dog's paws do not clearly operate connected controls, and the shallow vehicle lacks convincing jet ski construction. Clean outlines support the cartoon style, but generic shading and blurred water streaks limit depth and motion.

Score breakdown

CategoryMiMo-V2.6-ProQwen3.8-Flash
Task & likeness7.0/107.0/10
Anatomy & construction5.0/105.5/10
Space & placement5.5/106.5/10
Light & reflections5.5/105.5/10
Purposeful detail6.0/107.0/10
Artistry & character4.0/106.5/10
Materials & effects5.5/105.5/10
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

Same 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.

Qwen3.8-Flash

The pelican's expressive face, oversized bill and flowing scarf create an appealing focal point. The bicycle has recognizable frame, chain and wheel construction, but the far foot lacks a clear pedal connection and the wing's steering contact is ambiguous. Clean contours and gentle gradients support the illustration; simplified volume and weak directional shadows limit depth.

Score breakdown

CategoryMiMo-V2.6-ProQwen3.8-Flash
Task & likeness6.5/108.5/10
Anatomy & construction5.0/108.0/10
Space & placement6.0/107.5/10
Light & reflections5.5/106.5/10
Purposeful detail6.0/108.0/10
Artistry & character6.0/108.0/10
Materials & effects5.5/107.0/10
Visual integrity6.0/107.5/10

Benchmark task

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