Doubao Seed 2.1 Pro API
About
Process massive datasets with Doubao Seed 2.1 Pro, featuring an expansive 256K context window for long-document analysis. This model delivers cost-effective pricing at $1.00/1M input and $5.00/1M output tokens. Access Doubao Seed 2.1 Pro via the NanoGPT API with up to 128K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
No
Structured Output
No
Tool Use
No
WeightsClosed
Temperature
Fixed
Attachment
Not Supported
Limits
Context Window
256K
Tokens
Input Limit
256K
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.00
Output
$5.00
Caching (per 1M tokens)
Read
$0.50
Frequently Asked Questions
Doubao Seed 2.1 Pro by NanoGPT costs $1.00 per 1M input tokens and $5.00 per 1M output tokens. Cached reads cost $0.50 per 1M tokens.
Model Details
ID
bytedance/doubao-seed-2.1-pro
Provider
NanoGPTFamily
seed
Release Date
Jun 23, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NANO_GPT_API_KEY
API Base URL
https://nano-gpt.com/api/v1