Bria Fibo 2.0 Text To Image API Documentation

Bria Fibo 2.0 Text To Image API Documentation

Playground

Bria FIBO 2.0 Text-to-Image creates images from text prompts, with an optional reference image, flexible aspect ratios, and advanced structured prompting for product visuals, marketing assets, creative content, and production workflows. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Bria FIBO 2.0 Text-to-Image generates images from text descriptions with optional reference-image guidance and structured prompting. Choose from a wide range of aspect ratios, generate at 1k or 2k, and control the final framing for creative, commercial, and design workflows.

Why Choose This?

• Text-to-image generation — Create images from detailed descriptions of the subject, setting, style, and composition.
• Reference-guided generation — Use one image to guide the visual direction.
• Structured prompting — Reuse structured generation instructions from previous results.
• Flexible aspect ratios — Choose from 21 supported framing options.
• 1K and 2K output — Select the resolution tier that fits your workflow.
• PNG and JPEG output — Choose the preferred image format.

Parameters

How to Use

1. Describe the image — Write a prompt describing the subject, composition, lighting, and visual style.
2. Add guidance optional — Supply one reference image or reuse a structured_prompt.
3. Choose framing — Select an aspect ratio and resolution.
4. Choose output format optional — Select png or jpeg.
5. Set a seed optional — Use a fixed seed when reproducibility is useful.
6. Submit — Generate and retrieve the finished image.

Pricing

$0.04 per request.

Best Use Cases

• Advertising creatives — Generate campaign and promotional visuals.
• Product concepts — Explore product presentation and commercial imagery.
• Editorial content — Create images for publishing, social media, and marketing.
• Reference-guided creation — Use an existing image to influence the visual direction.
• Structured workflows — Reuse structured generation instructions across iterations.
• Custom-format graphics — Generate images across a wide range of aspect ratios.

Pro Tips

• Describe the subject, environment, lighting, composition, and style clearly.
• Use a reference image when visual consistency is important.
• Use structured_prompt when continuing or refining a previous structured generation.
• Choose a standard aspect ratio when using 2k.
• Use a fixed seed when comparing prompt or parameter changes.

Notes

• Provide at least one of prompt, images, or structured_prompt.
• images and structured_prompt cannot be used together.
• Standard aspect ratios are 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, and 16:9.
• 2k uses a different generation pipeline, not FIBO 2, and supports only the standard aspect ratios.
• Extended aspect ratios require 1k with either a text prompt (optionally accompanied by one reference image) or structured_prompt alone.
• Reference-only requests and requests combining prompt with structured_prompt support only the standard aspect ratios.
• Resolution tiers are square-equivalent, not fixed output dimensions. Actual width and height vary with the selected aspect ratio.
• For structured prompting, reuse the complete structured JSON from a previous generation.

Related Models

• Bria FIBO 2.0 Text-to-Image — Generate images from text, reference images, or structured prompts.
• Bria FIBO 2.0 Edit — Edit existing images with Bria FIBO 2.0.

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'
{
  "aspect_ratio": "1:1",
  "resolution": "1k",
  "output_format": "png",
  "images": [
    "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg"
  ]
}
JSON
)

# 1. Submit the prediction once. Never retry this request automatically:
# a retry after an unclear failure can create a second, billed task.
CHECK='The task may already exist. Check History or the predictions list before submitting again.'
if ! SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  --connect-timeout 10 --max-time 60 \
  -X POST "https://api.wavespeed.ai/api/v3/bria/fibo-2.0/text-to-image" \
  -H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}"); then
  printf 'Submit failed. %s\n' "${CHECK}" >&2
  exit 1
fi

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 "${PREDICTION_ID}" ]; then
  printf 'Submission response did not contain a prediction id. %s\n' "${CHECK}" >&2
  exit 1
fi
RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${PREDICTION_ID}/result"

# 2. Poll until the prediction reaches a final status.
BODY_FILE=$(mktemp)
trap 'rm -f "${BODY_FILE}"' EXIT
while true; do
  # Transient errors (429, 5xx) are retried, honoring Retry-After.
  HTTP_CODE=$(curl --silent --show-error --fail-with-body \
    --connect-timeout 10 --max-time 60 --retry 5 --retry-delay 2 \
    --output "${BODY_FILE}" --write-out '%{http_code}' \
    "${RESULT_URL}" \
    -H "Authorization: Bearer ${WAVESPEED_API_KEY}" || true)
  case "${HTTP_CODE}" in
    2??) ;;
    000|429|5??)  # dropped connection or temporary error: keep polling
      printf 'Task %s: HTTP %s, polling again in 10s\n' "${PREDICTION_ID}" "${HTTP_CODE}" >&2
      sleep 10; continue ;;
    *) printf 'Task %s: HTTP %s\n' "${PREDICTION_ID}" "${HTTP_CODE}" >&2
      cat "${BODY_FILE}" >&2; exit 1 ;;
  esac
  RESULT=$(jq 'if type == "object" and has("data") then .data else . end' "${BODY_FILE}")
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

  case "${STATUS}" in
    completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
    failed|cancelled|timeout|deleted)
      printf 'Task %s ended with status %s\n' "${PREDICTION_ID}" "${STATUS}" >&2
      printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
    *) sleep 2 ;;
  esac
done

Parameters

Task Submission Parameters

Request Parameters

Conditional constraints

• Not allowed: images has at most 0 items or omitted and prompt has at most 0 characters or omitted and structured_prompt has at most 0 characters or omitted.
• Not allowed: images has at least 1 items and structured_prompt is provided.
• Not allowed: aspect_ratio is one of 16:10, 10:16, 2:1, 1:2, 21:9, 9:21, 3:1, 1:3, 4:1, 1:4, 5:1, 1:5 and resolution is one of 2k.
• Not allowed: aspect_ratio is one of 16:10, 10:16, 2:1, 1:2, 21:9, 9:21, 3:1, 1:3, 4:1, 1:4, 5:1, 1:5 and prompt is provided and structured_prompt is provided.
• Not allowed: aspect_ratio is one of 16:10, 10:16, 2:1, 1:2, 21:9, 9:21, 3:1, 1:3, 4:1, 1:4, 5:1, 1:5 and images has at least 1 items and prompt has at most 0 characters or omitted.

Response Parameters

Result Request Parameters

Result Response Parameters