Doubao Seed 2.1 Pro
Chat-20%volcengine/doubao-seed-2.1-proDoubao-Seed-2.1-Pro is ByteDance Volcengine's flagship reasoning model with embedded thinking, delivering strong performance on complex tasks. Context: 256K tokens, output: 256K. Available via OpenAI and Anthropic protocols through Ofox.
Context Window
256K
Max Output Tokens
256K
Released
2026-06-23
Capabilities
VisionFunction CallingReasoningPrompt CachingWeb SearchVideo Input
Available Providers
Volcengine
Supported Protocols
openaianthropic
Providers
Volcengine
provider.type: "volcengine"-20%
Input Tokens
$0.7072/M
$0.884/M
Output Tokens
$3.536/M
$4.42/M
Cache Read
$0.1416/M
$0.177/M
Cache Write
$0.002/M
$0.0025/M
Web Search
$0.0012/R
Protocols
openai
/v1/chat/completions/v1/responsesanthropic
Code Examples
from openai import OpenAIclient = OpenAI(base_url="https://api.ofox.run/v1",api_key="YOUR_OFOX_API_KEY",)response = client.chat.completions.create(model="volcengine/doubao-seed-2.1-pro",messages=[{"role": "user", "content": "Hello!"}],)print(response.choices[0].message.content)
Related Models
Frequently Asked Questions
Doubao Seed 2.1 Pro on Ofox.ai costs $0.884/M per million input tokens and $4.42/M per million output tokens. Pay-as-you-go, no monthly fees.
Doubao Seed 2.1 Pro supports a context window of 256K tokens with max output of 256K tokens, allowing you to process large documents and maintain long conversations.
Simply set your base URL to https://api.ofox.run/v1 and use your Ofox API key. The API is OpenAI-compatible โ just change the base URL and API key in your existing code.
Doubao Seed 2.1 Pro supports the following capabilities: Vision, Function Calling, Reasoning, Prompt Caching, Web Search, Video Input. Access all features through the Ofox.ai unified API.