Buyer guide · REPRODUCIBLE GUIDE

AI Image API for Consistent Character Production

Evaluate character-image APIs with identity anchors, multi-view sheets, wardrobe constraints, expressions, props, and review criteria.

One API gateway for multiple AI models.

APIMart is a multi-model AI API gateway with an OpenAI-compatible endpoint. Use one account to access supported image models, compare current pricing, and choose a cost-efficient option for each workload.

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WHY THIS GUIDE EXISTS

Test the workflow,
not the marketing claim.

A single portrait cannot prove consistency, so this workflow uses turnarounds and character sheets to inspect face, silhouette, proportions, clothing, palette, prop continuity, and controlled variation across several views.

Characters

Forest ranger character sheet

Character sheet for Mara, a forest ranger with cropped auburn hair, olive field jacket, brass compass and worn canvas backpack; front, profile and three-quarter views; neutral studio background; consistent facial features.
Identity consistency fixture3:2
Characters

Retro space mechanic

Full-body retro-futurist spacecraft mechanic, orange utility suit with modular pockets, grease marks, transparent helmet carried under one arm, practical silhouette, 1970s industrial science-fiction mood.
Full-body character concept2:3
Characters

Noir detective turnaround

Turnaround sheet for detective Imani Vale, short natural curls, charcoal trench coat, oxblood notebook, composed expression; front, side and back views; consistent proportions; soft gray studio background.
Three-view turnaround3:2
Characters

Robot barista sheet

Friendly compact robot barista character sheet, cream enamel shell, walnut forearms, circular amber display, front and three-quarter poses plus four service gestures, consistent industrial design language.
Product mascot system3:2
PYTHON QUICKSTART

Keep the request reproducible.

Store credentials in the environment. Record the exact model identifier, dimensions, test date, and retry count with the resulting asset.

import os
from openai import OpenAI

client = OpenAI(
  api_key=os.environ["APIMART_API_KEY"],
  base_url="https://api.apimart.ai/v1",
)

result = client.images.generate(
  model="gpt-image-1-official",
  prompt=PROMPT,
  size="1024x1024",
  n=1,
)
REVIEW CHECKLIST

Before you publish a result