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 ↘Overall StealthMark
General Intelligence
Visual Intelligence
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
BENCHMARK BY BENCHMARK
Where each model leads
- Kolibri-1
- MiMo-V2.6-Pro
- Other models
- Median
Games
SVG
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
- 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 ↗
Foresight
Play Foresight yourselfAnticipating 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

Points per level
Latch
Play Latch yourselfCooperative 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.
Kolibri-1No run
MiMo-V2.6-Pro 52.6/100Rank 22/48

Points per level
Newton's Mirror
Same task instructionsPhysics, perspective and recursive reflections, tested together. Explore the test ↗
Kolibri-1 10.4/100 Rank 47/53

MiMo-V2.6-Pro 39.0/100 Rank 18/53

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
| Category | Kolibri-1 | MiMo-V2.6-Pro |
|---|---|---|
| State at 600 ms | 9.5/25 | 23.0/25 |
| Camera and placement | 1.5/15 | 12.0/15 |
| Reflections | 0.0/120 | 19.0/120 |
| Materials and scale | 3.0/10 | 7.5/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
Benchmark task
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Selfie
Different task instructionsVisual construction and creative interpretation.
Kolibri-1 22.9/100 Rank 53/53

MiMo-V2.6-Pro 58.0/100 Rank 36/53

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
| Category | Kolibri-1 | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 2.5/10 | 6.5/10 |
| Anatomy & construction | 2.0/10 | 5.0/10 |
| Space & placement | 3.0/10 | 5.5/10 |
| Light & reflections | 2.0/10 | 6.5/10 |
| Purposeful detail | 1.5/10 | 6.5/10 |
| Artistry & character | 1.5/10 | 5.0/10 |
| Materials & effects | 2.0/10 | 6.5/10 |
| Visual integrity | 5.5/10 | 6.0/10 |
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 instructionsPrecise visual recall and portrait reconstruction.
Kolibri-1 3.3/100 Rank 50/53

MiMo-V2.6-Pro 39.9/100 Rank 24/53

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
| Category | Kolibri-1 | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 0.5/10 | 3.5/10 |
| Anatomy & construction | 0.5/10 | 3.5/10 |
| Space & placement | 0.0/10 | 4.0/10 |
| Light & reflections | 0.0/10 | 5.0/10 |
| Purposeful detail | 0.0/10 | 3.0/10 |
| Artistry & character | 0.5/10 | 4.0/10 |
| Materials & effects | 0.5/10 | 4.0/10 |
| Visual integrity | 0.5/10 | 6.0/10 |
Benchmark task
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Beach
Same task instructionsCreativity, perspective and visual beauty.
Kolibri-1 12.9/100 Rank 52/53

MiMo-V2.6-Pro 60.9/100 Rank 27/53

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
| Category | Kolibri-1 | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 2.5/10 | 8.5/10 |
| Anatomy & construction | 0.5/10 | 5.0/10 |
| Space & placement | 3.0/10 | 6.0/10 |
| Light & reflections | 1.0/10 | 6.5/10 |
| Purposeful detail | 0.5/10 | 6.5/10 |
| Artistry & character | 1.0/10 | 5.0/10 |
| Materials & effects | 0.5/10 | 6.0/10 |
| Visual integrity | 3.0/10 | 6.0/10 |
Benchmark task
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Ground Truth
Same task instructionsPhysical reasoning, light and visual reconstruction.
Kolibri-1 21.2/100 Rank 44/53

MiMo-V2.6-Pro 43.6/100 Rank 19/53

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 instructionsScene composition and interacting subjects.
Kolibri-1 10.0/100 Rank 53/53

MiMo-V2.6-Pro 53.2/100 Rank 31/53

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
| Category | Kolibri-1 | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 1.5/10 | 7.0/10 |
| Anatomy & construction | 1.0/10 | 5.0/10 |
| Space & placement | 1.0/10 | 5.5/10 |
| Light & reflections | 0.0/10 | 5.5/10 |
| Purposeful detail | 0.5/10 | 6.0/10 |
| Artistry & character | 0.5/10 | 4.0/10 |
| Materials & effects | 0.5/10 | 5.5/10 |
| Visual integrity | 3.5/10 | 4.5/10 |
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 instructionsSubject construction and spatial relationships.
Kolibri-1 17.5/100 Rank 53/53

MiMo-V2.6-Pro 58.0/100 Rank 41/53

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
| Category | Kolibri-1 | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 1.5/10 | 6.5/10 |
| Anatomy & construction | 1.5/10 | 5.0/10 |
| Space & placement | 1.5/10 | 6.0/10 |
| Light & reflections | 3.0/10 | 5.5/10 |
| Purposeful detail | 1.5/10 | 6.0/10 |
| Artistry & character | 1.0/10 | 6.0/10 |
| Materials & effects | 1.0/10 | 5.5/10 |
| Visual integrity | 3.5/10 | 6.0/10 |
Benchmark task
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.