Bria Generate Background

Bria Generate Background

Playground

Swap image backgrounds using text or reference images; realistic results. Trained on licensed data for risk-free commercial use. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Bria Background Generation replaces or generates realistic backgrounds from a text prompt or a reference image while preserving the foreground subject. It’s trained exclusively on licensed data for safe, low-risk commercial use across ads, e-commerce, social, portraits, and product photos.

✨ Highlights

• Dual input: drive backgrounds by prompt or match style/composition with a reference image.
• Subject preservation: clean edges and minimal color bleed around people and products.
• Style range: photorealistic, illustration, anime—swap backgrounds without touching the subject.
• Production-ready: predictable results that slot into real design pipelines.
• Licensed training data: built for compliant commercial deployment.

🧩 Parameters

• image* (required) Foreground/subject image (URL or upload). Missing image will fail.

• prompt* (required) Background description only (scene, lighting, style, materials, mood). Example: “Epic anime city at night, neon signs, volumetric fog, blue-purple rim light.”

🚀 How to Use

1. Provide image (required) — a clear, unobstructed subject works best.
2. Write prompt (required) — describe the background only: environment, lighting, style.
3. Click Run (e.g., $0.04) and download the generated image.
4. Keep the same image and tweak the prompt to iterate styles while preserving composition.

💰 Pricing

• Per job $0.04

🧠 Prompting Tips (background-focused)

• Separate roles: keep the subject in the image; keep the background in the prompt.
• Lead with light: phrases like golden hour, studio softbox, neon backlight, volumetric fog quickly lift realism.
• Style anchors: add photorealistic, cinematic, anime, watercolor, or minimalist to control look.
• Materials & space: e.g., concrete rooftop, wet asphalt, marble lobby, skylight, depth of field.
• Consistent campaigns: reuse the same image and a prompt template; adjust color/weather for quick variants.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result

set -euo pipefail

export WAVESPEED_API_KEY="your-api-key"

REQUEST_BODY=$(cat <<'JSON'
{
  "prompt": "A cinematic ocean wave at sunrise, highly detailed",
  "image": "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg"
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/bria/generate-background" \
  -H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}")

TASK=$(printf '%s' "${SUBMIT_RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "${TASK}" | jq -r '.id // empty')
if [ -z "${PREDICTION_ID}" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL=$(printf '%s' "${TASK}" | jq -r '.urls.get // empty')
if [ -z "${RESULT_URL}" ]; then RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${PREDICTION_ID}/result"; fi

# 2. Poll until the prediction finishes.
while true; do
  RESPONSE=$(curl --silent --show-error --fail-with-body \
    "${RESULT_URL}" \
    -H "Authorization: Bearer ${WAVESPEED_API_KEY}")
  RESULT=$(printf '%s' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

  case "${STATUS}" in
    completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
    failed|cancelled|timeout) printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
    created|processing) sleep 2 ;;
    *) printf 'Unexpected status: %s
' "${STATUS}" >&2; exit 1 ;;
  esac
done

Parameters

Task Submission Parameters

Request Parameters

Response Parameters

Result Request Parameters

Result Response Parameters