HiAPI
OverviewModels MarketAPI KeysUsage StatisticsCall LogsBillingReferralPlaygroundStorageChangelogContact UsSettings
Display unit
N
Powered by hiapi
Settings

Welcome

Contact Us

Turn product, portrait and pet images into transparent PNGs. Explore five real before-and-after examples, input parameters and an API quickstart.

Provider: 851 Labs

Category: image generation

Endpoint: /v1/tasks

Status: Available

Cost: See live page pricing

Back to Models

851 Background Remover

by 851 LabsImage

Turn product, portrait and pet images into transparent PNGs. Explore five real before-and-after examples, input parameters and an API quickstart.

Pricing

Standard Usage

4 Credits/ image

Input

Estimated cost4 Credits / imageper image

Output

Ready for generation

Configure your parameters and click "Run" to see the output here.

--

From input to transparent result

Each case pairs the real input with the complete output — no prompt involved, with zoom for edge detail.

A leather backpack on a transparent background · Transparent PNG
A leather backpack on a transparent background · Original
OriginalTransparent PNG

1 source image / 2048 × 1365

A leather backpack on a transparent background

Isolate the backpack while retaining its handle, straps and outline for layouts and compositing. The submitted image and transparent PNG are both 2048 × 1365.

A product ready for a new background · Transparent PNG
A product ready for a new background · Original
OriginalTransparent PNG

1 source image / 1024 × 1024

A product ready for a new background

Isolate the ceramic dripper from the table while keeping the body, base and handle opening for layouts and compositing.

Separate a portrait from its setting · Transparent PNG
Separate a portrait from its setting · Original
OriginalTransparent PNG

1 source image / 1536 × 1024

Separate a portrait from its setting

Remove the harbor background while keeping the hat, beard and clothing outline. Expand the comparison to inspect the edges.

Backlit fur against a busy scene · Transparent PNG
Backlit fur against a busy scene · Original
OriginalTransparent PNG

1 source image / 2048 × 1365

Backlit fur against a busy scene

Separate the dog from the busy flower market for compositing into another scene. Drag the comparison to inspect fine fur detail.

A larger product image, cut out cleanly · Transparent PNG
A larger product image, cut out cleanly · Original
OriginalTransparent PNG

1 source image / 4096 × 2731

A larger product image, cut out cleanly

Remove the studio background while keeping the laces, sole and overall shape. This case used an input upscaled to 4096 × 2731 to exercise larger-image processing.

Related image models

Choose an adjacent model by task, output tier, and reference-image needs.

Another background-removal model

Recraft Remove Background

Compare another model on the same image.

Continue editing and compositing

Seedream 5.0 Pro

Use the isolated subject in a subsequent scene edit.

Multi-reference editing

FLUX.2 Image to Image

Continue working on the scene and style with additional references.

Compare AI image APIs

About 851 Background Remover

Turn product, portrait and pet images into transparent PNGs. Explore five real before-and-after examples, input parameters and an API quickstart.

The Playground and API use the same model ID: 851-labs/background-remover. It takes a single image URL with no prompt and returns a transparent-background PNG — built for automated batch pipelines.

Provider
851 Labs
Task
Image-to-Image / Editing
Input image
1
Pricing
4 Credits / image

Model specifications

Explore reference limits, sizes, formats and quality settings for 851 Background Remover.

Input images
1
Output formats
PNG
Pricing
Per image: 4 Credits / image

This endpoint takes one image with no additional generation controls. Consult live pricing and the task record for the charge.

How to use 851 Background Remover

One image in, transparent PNG out — no prompt, three steps to integrate.

Subject image
1 image
01

Upload an image

Choose one JPG, PNG or WebP image. For API requests, provide a directly accessible image URL.

API Quickstart

Copy a minimal request below. See Docs for parameters, callbacks, task retrieval, and errors.

Endpoint
POST /v1/tasks
Model ID
851-labs/background-remover
cURL
curl -X POST https://api.hiapi.ai/v1/tasks \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "851-labs/background-remover",
  "input": {
    "image_url": "https://static.hiapi.ai/model-covers/851-background-remover/2026/09/03/1788433602795-7188271fb0d9a807-backpack-input.jpg"
  }
}'

The create request immediately returns a taskId; image generation continues asynchronously.

Read the full API documentation

Frequently asked questions

Do I need a prompt?

No. Supply one image URL and the model separates the foreground from the background.

Is the output actually transparent?

The output is a PNG with an alpha channel. The checkerboard on this page illustrates transparency and is not embedded in the original downloadable result.

Which fields does the API require?

Submit model and input.image_url. The image must be directly accessible over HTTP or HTTPS.

Can I change the aspect ratio, colors or background?

This endpoint focuses on background removal and offers no aspect-ratio, background-color or prompt controls. Use the transparent output in a subsequent editing step.

How should I save the result?

Download it after the task succeeds or copy it to your own storage. Page examples and temporary task outputs have different retention policies.

Input

Original image

Output

Transparent PNG

02

Run it

Upload one image to produce a transparent PNG with no prompt. Output dimensions match the submitted image; Playground optimizes larger uploads.

Playground
POST /v1/tasks
03

Save and integrate

Check the edges in Playground, copy the result to your storage, then create asynchronous tasks with the same model ID.