
Seed 2.0 Mini API
Seed 2.0 Mini is the smallest and cheapest BytePlus text model. 256K-token context with text and image input, suited to simple high-volume tasks; a higher rate applies to prompts over 128K tokens.
- Input → Output
- In / out price
- $0.115 / $0.46per 1M
- Context
- 256K
- Max output
- 128K
Supported parameters
Values this model accepts through the API.
| Parameter | Accepted values |
|---|---|
| messages | Text and images (image_url) · up to 256K tokens |
| stream | true to receive the answer as a stream (SSE) |
| max_tokens | Caps output including reasoning, up to 128K tokens |
| thinking | { "type": "disabled" } turns reasoning off (on by default) |
| tools | OpenAI-style function calling |
| response_format | json_object or json_schema |
| temperature | Controls how varied the answer is |
Pricing
| Item | Prompts up to 128K | Prompts over 128K |
|---|---|---|
| Input | $0.115 | $0.23 |
| Cached input | $0.023 | $0.046 |
| Output | $0.46 | $0.92 |
Price per 1M tokens
Billed on the tokens actually used. Reasoning tokens count as output. Each request adds its exact cost to a running total, and whole credits are taken from your balance when that total reaches 1 credit; the remainder carries over. Failed requests are not charged.
One Fuzion credit balance covers the web app, the API, and MCP. No separate top-up · 1 credit = ฿1
Use it through the API
Same format as OpenAI Chat Completions. Point the base URL at Fuzion and use your API key, and the OpenAI SDK works as is.
curl -X POST https://fuzionhub.co/api/v1/chat/completions \
-H "Authorization: Bearer $FUZION_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "byteplus/seed-2-0-mini",
"messages": [
{
"role": "user",
"content": "Explain what an API is in two sentences."
}
]
}'from openai import OpenAI
client = OpenAI(base_url="https://fuzionhub.co/api/v1", api_key="<FUZION_API_KEY>")
stream = client.chat.completions.create(
model="byteplus/seed-2-0-mini",
messages=[{"role": "user", "content": "Explain what an API is in two sentences."}],
stream=True,
)
for chunk in stream:
if chunk.choices and chunk.choices[0].delta.content:
print(chunk.choices[0].delta.content, end="")Frequently asked questions
What is Seed 2.0 Mini?
Seed 2.0 Mini is the smallest and cheapest BytePlus text model. 256K-token context with text and image input, suited to simple high-volume tasks; a higher rate applies to prompts over 128K tokens.
How much does Seed 2.0 Mini cost?
Input $0.115 and output $0.46 per 1M tokens, billed on the tokens actually used. 1 Fuzion credit = ฿1, and the same balance pays for video, image, and audio.
How long can a prompt for Seed 2.0 Mini be?
The context window is 256K tokens and one answer can be up to 128K tokens, reasoning included.
What inputs does Seed 2.0 Mini accept?
Text and images (send images as image_url).
How do I use Seed 2.0 Mini through the API?
Create an API key in your Fuzion account, then call POST /api/v1/chat/completions with the model "byteplus/seed-2-0-mini". The format matches OpenAI, so the OpenAI SDK works once you change the base URL. Streaming, function calling, and JSON output are supported.
How are credits charged?
A single request costs a fraction of a credit, so costs are added up and whole credits are taken when the running total reaches 1 credit. The remainder carries over. Failed requests are not charged.




