OSS vs API: Open Source vs Cloud Model Comparison#

People#

Close-up street portrait with windblown curly hair and dramatic backlight, challenging fine hair edges

AI-generated with midjourney

Original image: Windblown Curly Portrait — Original Image

OSS model alpha matte: Windblown Curly Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Windblown Curly Portrait — API Alpha MatteCloud

Back view of a person with windblown curly hair and a backpack near a chain-link fence, city skyline softly blurred

AI-generated with midjourney

Original image: Windblown Curly Hair with Backpack — Original Image

OSS model alpha matte: Windblown Curly Hair with Backpack — OSS Alpha MatteOpen Source

API model alpha matte: Windblown Curly Hair with Backpack — API Alpha MatteCloud

Bearded man with curly hair in an office setting, fine hair edges and shallow depth of field

AI-generated with midjourney

Original image: Bearded Man Portrait — Original Image

OSS model alpha matte: Bearded Man Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Bearded Man Portrait — API Alpha MatteCloud

Smiling woman at sunset with confetti and rim-lit curls, challenging fine hair edges

AI-generated with midjourney

Original image: Confetti Sunset Portrait — Original Image

OSS model alpha matte: Confetti Sunset Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Confetti Sunset Portrait — API Alpha MatteCloud

Smiling man in a yellow jacket by the sea at sunset with a lighthouse in the background

AI-generated with midjourney

Original image: Smiling Man at Seaside Sunset — Original Image

OSS model alpha matte: Smiling Man at Seaside Sunset — OSS Alpha MatteOpen Source

API model alpha matte: Smiling Man at Seaside Sunset — API Alpha MatteCloud

Young woman smiling at the camera by the sea at golden hour, with freckles and a floral dress

AI-generated with midjourney

Original image: Smiling Woman by the Sea — Original Image

OSS model alpha matte: Smiling Woman by the Sea — OSS Alpha MatteOpen Source

API model alpha matte: Smiling Woman by the Sea — API Alpha MatteCloud

Bearded man close-up on a city street with buildings in the background

AI-generated with midjourney

Original image: Street Portrait — Original Image

OSS model alpha matte: Street Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Street Portrait — API Alpha MatteCloud

Young woman with wavy dark hair standing in a field at sunset, softly rim-lit and wearing an earthy jacket

AI-generated with midjourney

Original image: Sunset Field Portrait — Original Image

OSS model alpha matte: Sunset Field Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Sunset Field Portrait — API Alpha MatteCloud

Side profile of a person blowing dandelion seeds in warm backlight with drifting fluff

AI-generated with midjourney

Original image: Blowing Dandelion Seeds — Original Image

OSS model alpha matte: Blowing Dandelion Seeds — OSS Alpha MatteOpen Source

API model alpha matte: Blowing Dandelion Seeds — API Alpha MatteCloud

Bearded man with messy hair in a warm indoor setting at night, with window bokeh in the background

AI-generated with midjourney

Original image: Messy-Haired Bearded Portrait — Original Image

OSS model alpha matte: Messy-Haired Bearded Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Messy-Haired Bearded Portrait — API Alpha MatteCloud

Middle-aged woman with glasses and a patterned scarf looking at the camera on a city street, with a blurred bus in the background

AI-generated with midjourney

Original image: Woman Street Portrait with Glasses — Original Image

OSS model alpha matte: Woman Street Portrait with Glasses — OSS Alpha MatteOpen Source

API model alpha matte: Woman Street Portrait with Glasses — API Alpha MatteCloud

Back view of a person with a messy bun against blurred city buildings, including an orange facade

AI-generated with midjourney

Original image: Messy Bun in Cityscape — Original Image

OSS model alpha matte: Messy Bun in Cityscape — OSS Alpha MatteOpen Source

API model alpha matte: Messy Bun in Cityscape — API Alpha MatteCloud

Objects with Details#

Small spoked bicycle wheel with knobby tire on a wooden tabletop, thin spokes and circular edge

Shot with Smartphone (Samsung Galaxy S21)

Original image: Spoked Bike Wheel — Original Image

OSS model alpha matte: Spoked Bike Wheel — OSS Alpha MatteOpen Source

API model alpha matte: Spoked Bike Wheel — API Alpha MatteCloud

Two gravel bikes with drop bars on grass in a park, overlapping wheels and thin spokes

Shot with Smartphone (Samsung Galaxy S8)

Original image: Two Gravel Bikes in Park — Original Image

OSS model alpha matte: Two Gravel Bikes in Park — OSS Alpha MatteOpen Source

API model alpha matte: Two Gravel Bikes in Park — API Alpha MatteCloud

Dried purple flowers in a painted clay vase on a wooden table, thin stems and fine details

Shot with Smartphone (Samsung Galaxy S8)

Original image: Dried Flowers in Clay Vase — Original Image

OSS model alpha matte: Dried Flowers in Clay Vase — OSS Alpha MatteOpen Source

API model alpha matte: Dried Flowers in Clay Vase — API Alpha MatteCloud

Mixed autumn bouquet in a glass vase near a window, thin stems and overlapping leaves

Shot with Smartphone (Samsung Galaxy S21)

Original image: Autumn Bouquet in Vase — Original Image

OSS model alpha matte: Autumn Bouquet in Vase — OSS Alpha MatteOpen Source

API model alpha matte: Autumn Bouquet in Vase — API Alpha MatteCloud

Side-view cargo e-bike parked on a paved path beside tram tracks in a park under a cloudy sky

Shot with Smartphone (Samsung Galaxy S21)

Original image: Cargo E-Bike by Tracks — Original Image

OSS model alpha matte: Cargo E-Bike by Tracks — OSS Alpha MatteOpen Source

API model alpha matte: Cargo E-Bike by Tracks — API Alpha MatteCloud

Bicycle handlebar with a small vase of yellow flowers by the sea on a sandy beach

Shot with 35mm Film Camera (Pentax)

Original image: Bike Handlebar at Beach — Original Image

OSS model alpha matte: Bike Handlebar at Beach — OSS Alpha MatteOpen Source

API model alpha matte: Bike Handlebar at Beach — API Alpha MatteCloud

White chess pieces arranged on a board in a club setting with players blurred in the background

Shot with Nikon D90 (Nikon D90 with Nikkor 50mm f/1.8)

Original image: White Chess Pieces at Tournament — Original Image

OSS model alpha matte: White Chess Pieces at Tournament — OSS Alpha MatteOpen Source

API model alpha matte: White Chess Pieces at Tournament — API Alpha MatteCloud

Whiteboard covered with handwritten trigonometry formulas, examples, and unit circle diagrams

Shot with HP 635 Digital Camera (HP 635 Digital Camera - 2.1MP)

Original image: Trigonometry Notes on Whiteboard — Original Image

OSS model alpha matte: Trigonometry Notes on Whiteboard — OSS Alpha MatteOpen Source

API model alpha matte: Trigonometry Notes on Whiteboard — API Alpha MatteCloud

Motion#

Woman riding a bicycle with strong motion blur against a golden field at sunset

Shot with 35mm Film Camera (Pentax)

Original image: Cyclist in Motion — Original Image

OSS model alpha matte: Cyclist in Motion — OSS Alpha MatteOpen Source

API model alpha matte: Cyclist in Motion — API Alpha MatteCloud

Elderly man running with motion blur, flaring coat and blurred background

AI-generated with midjourney

Original image: Elderly Man Running — Original Image

OSS model alpha matte: Elderly Man Running — OSS Alpha MatteOpen Source

API model alpha matte: Elderly Man Running — API Alpha MatteCloud

Bright campfire flames rising from a ring of rocks against a dark night background

Shot with Canon 500D (Canon 500D with 18-55mm f/3.5-5.6 IS lens)

Original image: Campfire Flames at Night — Original Image

OSS model alpha matte: Campfire Flames at Night — OSS Alpha MatteOpen Source

API model alpha matte: Campfire Flames at Night — API Alpha MatteCloud

Sprinter in red tracksuit with strong motion blur and semi-transparent trails

AI-generated with midjourney

Original image: Sprinter Motion Blur — Original Image

OSS model alpha matte: Sprinter Motion Blur — OSS Alpha MatteOpen Source

API model alpha matte: Sprinter Motion Blur — API Alpha MatteCloud

Dancer in a colorful windbreaker and cap striking a dynamic pose on a gray studio background

AI-generated with midjourney

Original image: Street Dancer in Studio — Original Image

OSS model alpha matte: Street Dancer in Studio — OSS Alpha MatteOpen Source

API model alpha matte: Street Dancer in Studio — API Alpha MatteCloud

Plants#

Small balcony plant with bokeh background and thin leaves and stems

Shot with Canon 5D (Canon 5D Mark II with Takumar 50mm f/1.4)

Original image: Balcony Plant Bokeh — Original Image

OSS model alpha matte: Balcony Plant Bokeh — OSS Alpha MatteOpen Source

API model alpha matte: Balcony Plant Bokeh — API Alpha MatteCloud

Trailing hanging houseplant silhouetted against a bright window, fine leaves and chain details

Shot with Smartphone (Samsung Galaxy S21)

Original image: Hanging Plant in Window — Original Image

OSS model alpha matte: Hanging Plant in Window — OSS Alpha MatteOpen Source

API model alpha matte: Hanging Plant in Window — API Alpha MatteCloud

Red flower stem on a balcony with bokeh city buildings and autumn trees in the background

Shot with Canon 5D (Canon 5D Mark II with Takumar 50mm f/1.4)

Original image: Red Flower on Balcony — Original Image

OSS model alpha matte: Red Flower on Balcony — OSS Alpha MatteOpen Source

API model alpha matte: Red Flower on Balcony — API Alpha MatteCloud

Thin wild grass seed stem in focus against blurred autumn foliage background

Shot with Smartphone (Samsung Galaxy S21)

Original image: Grass Seed Stem — Original Image

OSS model alpha matte: Grass Seed Stem — OSS Alpha MatteOpen Source

API model alpha matte: Grass Seed Stem — API Alpha MatteCloud

Green compound leaf with raindrops in focus against blurred groundcover background

Shot with Smartphone (Samsung Galaxy S21)

Original image: Compound Leaf with Raindrops — Original Image

OSS model alpha matte: Compound Leaf with Raindrops — OSS Alpha MatteOpen Source

API model alpha matte: Compound Leaf with Raindrops — API Alpha MatteCloud

Clusters of bright orange berries on a leafy branch with blurred sky and trees in the background

Shot with Smartphone (Samsung Galaxy S21)

Original image: Orange Berries on Branch — Original Image

OSS model alpha matte: Orange Berries on Branch — OSS Alpha MatteOpen Source

API model alpha matte: Orange Berries on Branch — API Alpha MatteCloud

Rocky coastline and blue sea with a leafy bush in the foreground under a hazy sky

Shot with HP 635 Digital Camera (HP 635 Digital Camera - 2.1MP)

Original image: Rocky Coast with Bush — Original Image

OSS model alpha matte: Rocky Coast with Bush — OSS Alpha MatteOpen Source

API model alpha matte: Rocky Coast with Bush — API Alpha MatteCloud

Balcony planter with white and purple flowers against blurred apartment buildings in the background

Shot with Canon 5D (Canon 5D Mark II with Takumar 50mm f/1.4)

Original image: Balcony Flower Planter — Original Image

OSS model alpha matte: Balcony Flower Planter — OSS Alpha MatteOpen Source

API model alpha matte: Balcony Flower Planter — API Alpha MatteCloud

Animals#

Terrier dog mugshot with complex hair details and challenging edge transitions

AI-generated with midjourney

Original image: Terrier Dog Mugshot — Original Image

OSS model alpha matte: Terrier Dog Mugshot — OSS Alpha MatteOpen Source

API model alpha matte: Terrier Dog Mugshot — API Alpha MatteCloud

Close-up tabby cat with green eyes indoors near a window

Shot with Smartphone (Galaxy S5)

Original image: Tabby Cat Portrait — Original Image

OSS model alpha matte: Tabby Cat Portrait — OSS Alpha MatteOpen Source

API model alpha matte: Tabby Cat Portrait — API Alpha MatteCloud

Film Camera#

Small wooden fishing boat loaded with gear on calm water, captured in black and white

Shot with Medium Format Film (Lubitel 166)

Original image: Small Fishing Boat — Original Image

OSS model alpha matte: Small Fishing Boat — OSS Alpha MatteOpen Source

API model alpha matte: Small Fishing Boat — API Alpha MatteCloud

Two city bikes standing on a dry field, with a small vase of yellow flowers on the foreground bike's handlebar

Shot with 35mm Film Camera (Pentax)

Original image: Two Bikes in Field — Original Image

OSS model alpha matte: Two Bikes in Field — OSS Alpha MatteOpen Source

API model alpha matte: Two Bikes in Field — API Alpha MatteCloud

Technical Specifications#

Feature	OSS	API (Cloud)
Status	Active (Open Source)	Active (Cloud API)
Availability	Open source (Apache 2.0)	API only
Pixel Accuracy	Excellent	Best Overall
Edge Quality	Excellent	Superior
Model Size	Optimized for local use	Larger models
Hardware	CPU/GPU	AWS Inferentia (specialized AI chip)
Privacy	Images never leave your computer	Server-side processing (deleted after processing)
Free Credits	Unlimited (run locally)	50 credits on signup
Recommended Use	Privacy-sensitive applications, local processing	Highest quality requirements, production API

Installation & Usage#

The OSS model is available through open source packages, while the cloud API is accessed via REST.

OSS (Open Source)

Run instantly with Docker

docker run -p 80:80 withoutbg/app:latest

Python Package

Install via pip

pip install withoutbg

Cloud API

API Request

Process images via the cloud API

api

curl -X POST https://api.withoutbg.com/v1/remove-background \ -H 'Authorization: Bearer YOUR_API_KEY' \ -F 'image=@input.jpg' \ -o output.png

See full API documentation for integration details.

Get Started with 50 Free Credits

Create free account and get 50 credits instantly
API documentation for integration
Process images via the cloud API

OSS vs API: Open Source vs Cloud Model Comparison#

People#

Objects with Details#

Motion#

Plants#

Animals#

Film Camera#

Technical Specifications#

Installation & Usage#

OSS (Open Source)

Cloud API

Get Started with 50 Free Credits

Related Resources#