Ideogram 4.5 vs Ideogram V3 on the Sume image API

Sume lists two Ideogram rows: Ideogram V3 (ideogram/ideogram-v3) and Ideogram 4.5 (ideogram/ideogram-v4.5). At the catalog's default each shows $0.075 per image, but they behave differently. V3 takes up to 10 reference images and has no resolution field. Ideogram 4.5 takes up to 5 references, adds resolution (1K or 2K), and its price depends on quality.

The facts below come from the catalog descriptors and the Image API page, read 2026-10-03.

Catalog comparison

Both rows list the same 15 aspect ratios, including the tall and wide 1:3 and 3:1, which no other Sume image model lists.

How the two behave on edits

With Ideogram 4.5, a request with no input_references generates from text; with references the first image is edited and up to four more are used as references. An edit with no aspect_ratio keeps the source image's shape. The catalog caps Ideogram 4.5 at five references, so a sixth is an input error.

Ideogram V3 has no such split in the catalog: references go in input_references up to 10.

Which id to put in the request

If you need ten references, or you want the quality word to mean speed and not price, V3 is the row. If you want a 2K setting or the three-tier pricing, 4.5 is. Ideogram 4.5's low tier lists at $0.03 per image at the provider before Sume's margin, so a draft-then-final workflow on one id is possible without switching models. Run a short draft with quality: "low", then re-run the winner with quality: "high".

import os
import requests

resp = requests.post(
    "https://api.sume.com/v1/images",
    headers={"Authorization": f"Bearer {os.environ['SUME_API_KEY']}"},
    json={
        "model": "ideogram/ideogram-v4.5",
        "prompt": "poster that reads GRAND OPENING in bold slab letters",
        "quality": "low",
        "resolution": "1K",
    },
    timeout=60,
)
resp.raise_for_status()
if resp.status_code == 202:
    print("still running:", resp.json()["data"]["status_url"])
else:
    for image in resp.json()["data"]:
        print(image["url"])