> ## Documentation Index
> Fetch the complete documentation index at: https://aisa.one/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ByteDance Models API - Access Seed and Seedream via AIsa

> Current AIsa guide to ByteDance Seed and Seedream model IDs, context windows, capabilities, endpoints, and prices, including Seed 1.x, Seed 2.0, Seedream 4.5, and Seedream 5.0 routes through BytePlus.

AIsa routes ByteDance Seed and Seedream models through BytePlus, ByteDance's official international enterprise platform. Use one AIsa API key for Seed text/vision/video/coding models and Seedream image models.

All current ByteDance entries in the AIsa catalog use `POST /v1/chat/completions`. Seedream models are billed per request.

## Supported ByteDance models

| Model ID                | Context | Capabilities                |                           Price | Best for                          |
| ----------------------- | ------: | --------------------------- | ------------------------------: | --------------------------------- |
| `seed-1-6-250915`       | 262,144 | Text, Video, Vision         | $0.2250 in / $0.9000 out per 1M | Stable general Seed route         |
| `seed-1-6-flash-250715` | 262,144 | Text, Video, Vision         | $0.0675 in / $0.2700 out per 1M | Fast, low-cost throughput         |
| `seed-1-8-251228`       | 262,144 | Coding, Text, Video, Vision | $0.2250 in / $1.8000 out per 1M | Stronger agentic and coding tasks |
| `seed-2-0-mini-260215`  | 262,144 | Coding, Text, Video, Vision | $0.1000 in / $0.4000 out per 1M | Low-cost Seed 2.0 route           |
| `seed-2-0-lite-260228`  | 262,144 | Coding, Text, Video, Vision | $0.2500 in / $2.0000 out per 1M | Balanced Seed 2.0 route           |
| `seed-2-0-pro-260328`   | 262,144 | Coding, Text, Video, Vision | $0.5000 in / $3.0000 out per 1M | Strongest Seed 2.0 route          |
| `seedream-4-5-251128`   |     N/A | Image, Vision               |                 \$0.036/request | Image generation and editing      |
| `seedream-5-0-260128`   | 262,144 | Image, Vision               |                 \$0.035/request | Newer Seedream image route        |

The date suffix in each model string is a release/version stamp in `YYMMDD` format, useful when pinning a production route.

## Quickstart

```python theme={null}
from openai import OpenAI

client = OpenAI(api_key="YOUR_AISA_API_KEY", base_url="https://api.aisa.one/v1")

response = client.chat.completions.create(
    model="seed-2-0-pro-260328",
    messages=[{"role": "user", "content": "Analyze this product requirements document and identify implementation risks."}]
)
print(response.choices[0].message.content)
```

## Image route example

```python theme={null}
response = client.chat.completions.create(
    model="seedream-5-0-260128",
    messages=[
        {"role": "user", "content": "Create a clean product image of a glass water bottle on a white marble surface."}
    ]
)
```

## Common choices

| Need                             | Use                                               |
| -------------------------------- | ------------------------------------------------- |
| Lowest-cost Seed route           | `seed-1-6-flash-250715` or `seed-2-0-mini-260215` |
| Strongest Seed text/coding route | `seed-2-0-pro-260328`                             |
| Stable Seed 1.x route            | `seed-1-6-250915`                                 |
| Image generation/editing         | `seedream-5-0-260128` or `seedream-4-5-251128`    |

## Data privacy

ByteDance Seed and Seedream requests are routed through BytePlus enterprise infrastructure. For compliance and data residency requirements, [contact us](mailto:developer@aisa.one).

## Next

* [All Chinese AI models](/guides/chinese-llms)
* [Qwen and Wan models](/guides/chinese-llms/qwen)
* [All supported AIsa models](/guides/models)