STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Kolibri-1 vs MiMo-V2.6-Pro

MiMo-V2.6-Pro leads Kolibri-1 by 34.3 points on StealthMark, 47.9 to 13.6. It leads on all 7 benchmarks with results for both. 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

13.6/100Overall rank 52/53
47.9/100Overall rank 21/53

General Intelligence

12.3/100
44.3/100

Visual Intelligence

15.0/100
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

  • Kolibri-1Multi-step reasoning not measured

Open or local

Local modelOpen model · Apache-2.0
Open modelMIT

BENCHMARK BY BENCHMARK

Where each model leads

  • Kolibri-1
  • MiMo-V2.6-Pro
  • Other models
  • Median

DATASHEET

Specs and pricing

Kolibri-1 runs 43% faster in our speed test. MiMo-V2.6-Pro scores higher on StealthMark. Both take about 1M tokens of context.

  • Kolibri-1
  • MiMo-V2.6-Pro
  • Other models
  • Median
PricePer 1M output tokens, input below
Kolibri-1: No list priceMiMo-V2.6-Pro: $0.87$0.43 input
Context windowTokens per request, max output below
Kolibri-1: 1MTiedMiMo-V2.6-Pro: 1MTied128K max output
Output speedTokens per second, our measurement
Kolibri-1: 16643% fastertokens/sMiMo-V2.6-Pro: 116tokens/s
SizeTotal and active parameters
Kolibri-1: 78.1B3.46B activeMiMo-V2.6-Pro: 1.02T42B active
Developer
Aleph AlphaXiaomi
Released
3 Oct 202621 Sep 2026
Origin
GermanyChina
Input → output
Text → textText, image, video, audio → text
Architecture
Mixture-of-Experts with 4:1 sliding-window-attention to global-attention patternSparse 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 sourceKolibri-1 ↗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.

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

LevelKolibri-1MiMo-V2.6-Pro
Level 1Second Thoughts
No run
4 ptsOut of lives
Level 2Pressure Pot
No run
9 ptsOut of lives
Level 3Hide or Flight
No run
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.

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

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

Newton's Mirror

Same task instructions

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

The judgment

Kolibri-1

A segmented gray perimeter surrounds a black field containing one large, low-positioned gray sphere and two small colored circles. Rounded volume and restrained paint scale earn partial material credit. The image does not demonstrate the required optical structure, while paint history, airborne black and settled support remain largely unresolved.

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

CategoryKolibri-1MiMo-V2.6-Pro
State at 600 ms9.5/2523.0/25
Camera and placement1.5/1512.0/15
Reflections0.0/12019.0/120
Materials and scale3.0/107.5/10
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

Kolibri-1

A restrained ivory, teal and green palette gives the image simple graphic coherence. Execution remains rudimentary: detached oval wings, ambiguous central anatomy and unclear feeding contact prevent a convincing hummingbird scene. The requested feather structure, botanical detail, lighting and enclosing arch are largely unresolved.

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

CategoryKolibri-1MiMo-V2.6-Pro
Task & likeness2.5/106.5/10
Anatomy & construction2.0/105.0/10
Space & placement3.0/105.5/10
Light & reflections2.0/106.5/10
Purposeful detail1.5/106.5/10
Artistry & character1.5/105.0/10
Materials & effects2.0/106.5/10
Visual integrity5.5/106.0/10

Benchmark task

Kolibri-1

A jewel-coloured hummingbird hovering in flight tests avian anatomy, delicate structure and iridescent surface detail.

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

Kolibri-1

The candidate offers a clean, highly simplified frontal portrait with warm skin and dark hair. Its oversized oval face, schematic features and unresolved body provide little Mona Lisa likeness. Missing crossed hands, clothing detail and landscape remove essential parts of the original composition; smooth gradients supply only limited volume.

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

CategoryKolibri-1MiMo-V2.6-Pro
Task & likeness0.5/103.5/10
Anatomy & construction0.5/103.5/10
Space & placement0.0/104.0/10
Light & reflections0.0/105.0/10
Purposeful detail0.0/103.0/10
Artistry & character0.5/104.0/10
Materials & effects0.5/104.0/10
Visual integrity0.5/106.0/10

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

Kolibri-1

A recognizable sunset beach has an appealing purple-orange gradient and clean geometric edges. Birds and animals remain unresolved, terrain obscures the relationship between shore and water, and reflections are absent. Sparse detail, flat materials and limited activity keep the drawing elementary despite its tidy rendering.

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

CategoryKolibri-1MiMo-V2.6-Pro
Task & likeness2.5/108.5/10
Anatomy & construction0.5/105.0/10
Space & placement3.0/106.0/10
Light & reflections1.0/106.5/10
Purposeful detail0.5/106.5/10
Artistry & character1.0/105.0/10
Materials & effects0.5/106.0/10
Visual integrity3.0/106.0/10

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

Kolibri-1

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

Kolibri-1

Clean shapes and a readable coral platform provide basic graphic clarity, but the animal construction remains fragmented. A recognizable raccoon riding the dog's back, connected steering and convincing water contact are not demonstrated. Sparse detail, flat subjects and absent movement effects support retaining the baseline category assessments.

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

CategoryKolibri-1MiMo-V2.6-Pro
Task & likeness1.5/107.0/10
Anatomy & construction1.0/105.0/10
Space & placement1.0/105.5/10
Light & reflections0.0/105.5/10
Purposeful detail0.5/106.0/10
Artistry & character0.5/104.0/10
Materials & effects0.5/105.5/10
Visual integrity3.5/104.5/10

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

Kolibri-1

Clean shapes and aligned wheels establish a readable schematic scene. Pelican likeness, riding support and bicycle mechanics remain substantially unresolved. Sparse detail and flat surfaces limit expression and volume. Strong edge and fill integrity is a separate success and does not repair the construction.

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

CategoryKolibri-1MiMo-V2.6-Pro
Task & likeness1.5/106.5/10
Anatomy & construction1.5/105.0/10
Space & placement1.5/106.0/10
Light & reflections3.0/105.5/10
Purposeful detail1.5/106.0/10
Artistry & character1.0/106.0/10
Materials & effects1.0/105.5/10
Visual integrity3.5/106.0/10

Benchmark task

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