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BytedanceReleased on Dec 1, 2025

Seedream 4.5: Pricing, Performance & Examples

Seedream 4.5 is a image generation model from Bytedance, released in December 2025, with a 2K-token context window.

Upgraded Bytedance image model with stronger spatial understanding and world knowledge. Supports 4K resolution, image-to-image editing, and various aspect ratios.

Input
TextImage
Output
Image

Seedream 4.5 examples

Recent arena outputs from Seedream 4.5, picked from the highest-ranked matchups.

Seedream 4.5 API

POST/v1/generations

Set for image-to-image / editing models.

Run a request to see the response

Use it in your code

OpenAI-compatible endpoint through the LLM Stats gateway.

import requests

# Create the generation. wait="auto" long-polls (up to 60s) so most short
# jobs return as "completed" in a single round-trip.
res = requests.post(
    "https://gateway.llm-stats.com/v1/generations",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "model": "seedream-4.5",
        "input": {"prompt": "A beautiful sunset over mountains"},
        "wait": "auto",
    },
)
job = res.json()

# If it didn't finish inside the wait window, poll the same resource.
while job["status"] in ("queued", "running"):
    res = requests.get(
        f"https://gateway.llm-stats.com/v1/generations/{job['id']}",
        params={"wait": 60},
        headers={"Authorization": "Bearer YOUR_API_KEY"},
    )
    job = res.json()

if job["status"] == "completed":
    print("image:", job["output"]["media"][0]["url"])
else:
    print("Failed:", job["error"]["message"])

Need an API key? Create one above in the playground, or read the API documentation.

Seedream 4.5 pricing

Providers

Seedream 4.5 starts at $0.0400 per generated image via Fal. See all 2 providers below with their per-image pricing, latency, and modality support.

ProviderPrice $/imageLatency sModalities in / out
Fal logoFal
$0.0400
0.00
/
Replicate logoReplicate
$0.0400
/

Seedream 4.5 latency

Seedream 4.5 time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.

Provider operational metrics

Time to first token, output throughput, and failed-request rate from live API traffic

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Seedream 4.5 benchmarks

Capability tiers

Standing within each category, adjusted for leaderboard depth.

Performance by category and language

Where Seedream 4.5 is strongest across prompt themes and languages. Conservative TrueSkill score (μ − 3σ), only axes with 3+ votes.

Quality Tracker

Similar Models

How Seedream 4.5 compares to its closest neighbors on each image arena it competes in.

Notice missing or incorrect data?

Seedream 4.5 license

Seedream 4.5 is a proprietary model available under its provider's product and API terms.

License
Proprietary
Hosted access

Proprietary license - usage restrictions apply

Models like Seedream 4.5

Other image models ranked closest to Seedream 4.5.

FAQ

Common questions about Seedream 4.5.

Who created Seedream 4.5?

Seedream 4.5 was created by Bytedance.

What is the license for Seedream 4.5?

Seedream 4.5 is released under the Proprietary license.

Is Seedream 4.5 multimodal?

Yes, Seedream 4.5 is multimodal and can accept both text and images as input.

Where can I use Seedream 4.5?

Seedream 4.5 is available through 2 providers including Fal, Replicate.