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ByteDance Seed: Seedream 5.5NEW
bytedance-seed/seedream-5-5Seedream 5.5 is an image generation and editing model from ByteDance Seed. It is suited for creating images from text prompts and for editing or combining existing images, using up to 10 reference images per request.
Modalities
Price
Context
0
Released
Nov 12, 2026
Parameters
promptrequiredaspect_ratio1:11:22:12:33:23:44:34:55:49:169:19.59:209:2116:919.5:920:921:9autoresolutionsize886x11821182x886670x15641564x670916x11441144x916836x12541254x836724x14481448x7241024x1024768x13661366x7681004x23462346x10041330x17721772x13301254x18801880x12541374x17161716x13741086x21722172x10861152x20481536x15362048x11521446x28942894x14461534x27282728x15341670x25062506x16701772x23622362x17722046x20461830x22882288x18301340x31263126x1340imageimage-to-image (via /v1/images/edits)How to use via API
import base64
from openai import OpenAI
client = OpenAI(base_url="https://api.mixen.ai/v1", api_key="mxn-...")
img = client.images.generate(
model="bytedance-seed/seedream-5-5",
prompt="Милый кот-космонавт на Марсе",
size="886x1182", # либо extra_body={"aspect_ratio": "1:1", "resolution": "1k"}
n=1,
)
with open("image.png", "wb") as f:
f.write(base64.b64decode(img.data[0].b64_json))
# image-to-image: передать референс(ы) через multipart
edited = client.images.edit(
model="bytedance-seed/seedream-5-5",
image=open("photo.png", "rb"), # один или несколько референсов
prompt="Добавь неоновую вывеску на фасад, сохрани композицию",
)
with open("edited.png", "wb") as f:
f.write(base64.b64decode(edited.data[0].b64_json))
