Seedream 4.0
Seedream 4.0 is ByteDance's text-to-image model, tuned for high-resolution photorealistic generation, accurate text-in-image rendering, and strong bilingual Chinese-English prompt adherence. It targets production creative workflows and supports high-fidelity outputs at large resolutions. Use it for marketing imagery, design assets, and applications that need ByteDance-research-grade image quality.
Pricing
Input
$0.030 / image
Output
—
Pay only for what you use. No subscriptions, no minimums.
Specs
- Context
- —
- Max output
- —
- Latency
- Fast
- Category
- Image
- Arabic
- Partial
Constraints & limits
Pixel area
3.69M – 16.78M px
Images per call
1 – 15
Output
Presigned URLs (~24h TTL)
The gateway auto-clamps requests to the model's limits where possible.
Quick start
This sample hits the image generation endpoint. Change base_url and your key, then run it.
from openai import OpenAI
client = OpenAI(
api_key="tl-xxxxxxxxxxxxxxxxxxxxxxxx",
base_url="https://api.thalam.ai/v1",
)
response = client.images.generate(
model="bytedance/seedream-4.0",
prompt="A futuristic city skyline at sunset.",
size="1024x1024",
n=1,
)
print(response.data[0].url)Similar models
Nano Banana Pro
Nano Banana Pro: Google's Gemini 3 Pro Image, frontier text-to-image with best-in-class in-image text.
Seedream 5.0 Pro
The top tier of the Seedream 5 line. Single-image output up to 2K, with multi-image fusion for style and character references.