{
  "model": "bytedance/seedream-5.0-pro",
  "prompt": "Create a polished vertical design-exhibition poster with a warm ivory paper background, bold cobalt blue typography and an editorial still-life photograph of a sculptural terracotta vase and a yellow lemon in the lower half. Strong Swiss-style grid, generous margins, high-end art-direction, flat print-ready poster artwork, no frame or mockup. Render the following exact text sharply and legibly as part of the generated image, preserving accents and Japanese characters. Top small label: ATELIER. Large English headline on two lines: FORM & COLOR. Below it, French line: FORME ET COULEUR. Below that, Japanese line: かたちと色. At the bottom: DESIGN EXHIBITION, then PARIS · TOKYO. The three language lines should all be clearly readable, carefully typeset and integrated into one coherent poster. No other text, no logos, no watermark.",
  "size": "1024x1536",
  "response_format": "b64_json",
  "output_format": "png",
  "watermark": false,
  "optimize_prompt_options": {
    "mode": "standard"
  }
}