2027 wall calendar art: 12 matching months on Seedream 5.0 Lite

A 12-month wall calendar needs twelve illustrations that look like one artist made them, and on Seedream 5.0 Lite that takes one text-to-image anchor plus eleven reference-guided months at $0.04375 each, $0.525 in total before retakes. The model lists 3:4 and takes up to 10 reference images, which is what keeps the set consistent.

The art is the quick part of a 2027 calendar: the plan below is one call per month and a fixed style sentence. Facts are from the Sume Image API docs and catalog (read 2026-10-03).

Plan and cost

Even with two retakes for every month the set stays under $1.575, so spend the effort on the prompt and the approval step.

Keeping the set coherent

Fix three things in the anchor and repeat them in every prompt: the palette (three or four named colors), the medium (for example gouache with visible paper grain) and the framing (a centered subject with empty sky for the date grid). Pass the approved anchor and, from May on, the previous month as input_references, so drift from month to month cannot accumulate unnoticed.

Change only the season and the subject line per month. If a month drifts, regenerate it from the anchor, not from its neighbor.

• Request aspect_ratio: "3:4" in every call; Seedream 5.0 Lite lists it, and auto is not in its list.
• Leave room at the bottom for the date grid and add the numbers in your layout tool, not in the image.
• Upscale the approved files for print as a separate step; the generator is not a print-resolution tool.

One month

The same body works for every month after the anchor; only the prompt text and the reference list change.

{
  "model": "bytedance-seed/seedream-5-lite",
  "prompt": "Same gouache style and palette as image 1: a fox in first snow, empty sky above",
  "aspect_ratio": "3:4",
  "input_references": [
    {"type": "image_url", "image_url": {"url": "https://example.com/anchor-january.png"}}
  ]
}