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ByteDance
Doubao Seed 2.1 Pro
Doubao Seed 2.1 Pro 是字节跳动豆包新一代旗舰深度思考模型，256K 上下文，面向复杂代码交付、长链路 Agent 执行与多模态视觉理解；在多项编程与科学计算基准上接近或超越 GPT-5.5。
Quick Stats
Context
256K
Max Output
256K
Provider
ByteDance
Specs
1
Modalities
in textin imageout text
Specs & List Price (per 1M tokens)
Quality
Input $0.882353Output $4.411765Cache read $0.176471
Recommended Plan
Doubao Seed 2.1 Pro Starter Plan
Pay-as-you-go after top-up; $1 free credit for new users.
API Endpoint
Model ID
volcengine/doubao-seed-2.1-procURL
curl https://intertoken.ai/v1/chat/completions \
-H "Authorization: Bearer $TOKENPORTAL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "volcengine/doubao-seed-2.1-pro",
"messages": [{"role": "user", "content": "Hello!"}]
}'Python
from openai import OpenAI
client = OpenAI(
base_url="https://intertoken.ai/v1",
api_key="$TOKENPORTAL_API_KEY",
)
resp = client.chat.completions.create(
model="volcengine/doubao-seed-2.1-pro",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Start using this model
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