Seed 2.0 Pro API
ByteDance's chat model. Call it on 666 AI with the same API key as every other model. Pay as you go; prices follow the upstream in real time and this page updates hourly.
| Vendor | ByteDance |
| Type | chat |
| Price | $0.675 per 1M input tokens · $4.05 per 1M output tokens |
| Live test | Passed our live test in the last 7 days |
| Model ID (use this in your request) | bytedance/seed-2-0-pro |
How to call Seed 2.0 Pro
The API is OpenAI-compatible. Replace YOUR-ENDPOINT with the endpoint shown on your API Key page after you sign up, and YOUR-KEY with your key.
curl https://YOUR-ENDPOINT/v1/chat/completions \
-H "Authorization: Bearer YOUR-KEY" \
-H "Content-Type: application/json" \
-d '{"model": "bytedance/seed-2-0-pro", "messages": [{"role": "user", "content": "Hello"}]}'from openai import OpenAI
client = OpenAI(base_url="https://YOUR-ENDPOINT/v1", api_key="YOUR-KEY")
r = client.chat.completions.create(
model="bytedance/seed-2-0-pro",
messages=[{"role": "user", "content": "Hello"}],
)
print(r.choices[0].message.content)Similar models — price comparison
| Model | Price |
|---|---|
| Kimi K2.6 | $0.808 per 1M input tokens · $3.4 per 1M output tokens |
| Gemini 3 Flash Preview | $0.6075 per 1M input tokens · $3.65 per 1M output tokens |
| Dola Seed 2.0 Pro | $0.675 per 1M input tokens · $4.05 per 1M output tokens |
| GLM 5 | $0.8672 per 1M input tokens · $3.9 per 1M output tokens |
| Step 5 Preview | $1.35 per 1M input tokens · $3.65 per 1M output tokens |
| Kimi K2.5 | $0.81 per 1M input tokens · $4.49 per 1M output tokens |
More models from ByteDance
| Model | Price |
|---|---|
| Ark Doubao Seed 2.0 Pro 260215 | $0.6307 per 1M input tokens · $3.15 per 1M output tokens |
| Dola Seedream 5.0 Pro | $0.0607 per image |
| Seedance 1.5 Pro | $0.0156 – $0.1575 per second |
| Seedance 2.0 | $0.0558 – $1.84 per second |
| Seedance 2.0 Fast | $0.0321 – $0.1225 per second |
| Seedance 2.0 Mini | $0.0272 – $0.1021 per second |
| Seedance 2.5 | $0.083 – $0.312 per second |
| Seedream 4.5 | $0.054 per image |
FAQ
How much does the Seed 2.0 Pro API cost?
On 666 AI, Seed 2.0 Pro costs $0.675 per 1M input tokens · $4.05 per 1M output tokens. You pay only for what you use — no monthly fee. Prices follow the upstream in real time; this page updates every hour.
Can I use the official OpenAI SDK?
Yes. The API is OpenAI-compatible: in the OpenAI Python or Node.js SDK just change base_url and api_key, and set model to bytedance/seed-2-0-pro.
How do I pay?
Bank card (including Google Pay / Apple Pay), USDT / ETH, or bank wire. Top up once and usage is deducted as you go.