Image

BiRefNet V2 (BG Remove)

Credit-based pricing. Supports reference images.

Try BiRefNet V2 (BG Remove) →Compare models

Output

image

Inputs

Reference image (required)

Example prompt

Upload any image — BiRefNet V2 precisely cuts out the subject and removes the background, leaving a clean transparent PNG ready for compositing.

Try this prompt →

LLM-ready

API & LLM schema

Exact request contract for this model. Agents can fetch it from /api/v1/models?id=fal-ai/birefnet/v2.

POST/api/v1/generate14 fields · 2 required

Field	Type	Requirement	Contract
`model_id`	constant	Required	ArtEmotion model identifier.
`extra`	object	Optional	Model-specific settings may also be nested here.
`max_credits`	number	Optional	Reject before submission if the estimated list price exceeds this cap. · Range: 1–…
`webhook_url`	string	Optional	Format: uri
`webhook_secret`	string	Optional	Optional model input.
`folder_id`	string	Optional	Optional model input.
`prompt`	string	Optional	Optional model input.
`model`	string	Optional	Model to use for background removal. · Allowed: General Use (Light), General Use (Light 2K), General Use (Heavy), Matting, Portrait, General Use (Dynamic) · Default: General Use (Light)
`operating_resolution`	string	Optional	The resolution to operate on. 2304x2304 is only available with General Use (Dynamic). · Allowed: 1024x1024, 2048x2048, 2304x2304 · Default: 1024x1024
`output_format`	string	Optional	The format of the output image. · Allowed: webp, png, gif · Default: png
`refine_foreground`	boolean	Optional	Whether to refine the foreground using the estimated mask. · Default: true
`mask_only`	boolean	Optional	Return only the segmentation mask without applying it to the image. Skips foreground refinement. · Default: false
`output_mask`	boolean	Optional	Whether to output the mask used to remove the background. · Default: false
`reference_image_url`	string	Required	Format: uri

Minimal request example

{
  "model_id": "fal-ai/birefnet/v2",
  "reference_image_url": "https://example.com/reference_image"
}

Raw JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=fal-ai%2Fbirefnet%2Fv2",
  "title": "BiRefNet V2 (BG Remove) generation request",
  "description": "Request body accepted by POST /api/v1/generate for fal-ai/birefnet/v2.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "fal-ai/birefnet/v2",
      "description": "ArtEmotion model identifier."
    },
    "extra": {
      "type": "object",
      "additionalProperties": true,
      "description": "Model-specific settings may also be nested here."
    },
    "max_credits": {
      "type": "number",
      "minimum": 1,
      "description": "Reject before submission if the estimated list price exceeds this cap."
    },
    "webhook_url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048
    },
    "webhook_secret": {
      "type": "string",
      "maxLength": 512
    },
    "folder_id": {
      "type": "string"
    },
    "prompt": {
      "type": "string"
    },
    "model": {
      "title": "Model",
      "description": "Model to use for background removal.",
      "default": "General Use (Light)",
      "type": "string",
      "enum": [
        "General Use (Light)",
        "General Use (Light 2K)",
        "General Use (Heavy)",
        "Matting",
        "Portrait",
        "General Use (Dynamic)"
      ]
    },
    "operating_resolution": {
      "title": "Operating Resolution",
      "description": "The resolution to operate on. 2304x2304 is only available with General Use (Dynamic).",
      "default": "1024x1024",
      "type": "string",
      "enum": [
        "1024x1024",
        "2048x2048",
        "2304x2304"
      ]
    },
    "output_format": {
      "title": "Output Format",
      "description": "The format of the output image.",
      "default": "png",
      "type": "string",
      "enum": [
        "webp",
        "png",
        "gif"
      ]
    },
    "refine_foreground": {
      "title": "Refine Foreground",
      "description": "Whether to refine the foreground using the estimated mask.",
      "default": true,
      "type": "boolean"
    },
    "mask_only": {
      "title": "Mask Only",
      "description": "Return only the segmentation mask without applying it to the image. Skips foreground refinement.",
      "default": false,
      "type": "boolean"
    },
    "output_mask": {
      "title": "Output Mask",
      "description": "Whether to output the mask used to remove the background.",
      "default": false,
      "type": "boolean"
    },
    "reference_image_url": {
      "type": "string",
      "format": "uri"
    }
  },
  "required": [
    "model_id",
    "reference_image_url"
  ],
  "additionalProperties": false
}

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FAQ

How much does BiRefNet V2 (BG Remove) cost on ArtEmotion?

Credit-based pricing. You pay in ArtEmotion credits — every plan and top-up converts USD to credits at a fixed rate.

Do I get my credits back if BiRefNet V2 (BG Remove) fails?

Yes — failed generations are never charged. The credits are released back to your balance automatically.

Can I call BiRefNet V2 (BG Remove) from the API?

Yes. Use POST /api/v1/generate with model_id: "fal-ai/birefnet/v2". See the API reference for the full schema.

Where are my generations stored?

Every output is saved to your personal Library. You can export or delete everything any time from Privacy & deletion.

Ready to generate with BiRefNet V2 (BG Remove)?

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No commitment. New accounts get 50 free credits on signup. See pricing.