Doubao Seed 2.1 Turbo
Doubao-Seed-2.1-turbo is the fast, low-latency, cost-efficient variant of the Doubao Seed 2.1 family, keeping multimodal understanding and agentic tool use for high-throughput production. Access it through Velokey's unified endpoint with below-list pricing.
Use cases
High-volume production apps · Real-time conversational assistants
Input
Text, image
Output
Text
Billing
Per token
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Sign up to get $0.5 in free credits — about 20 free images
Pricing details
Transparent usage-based pricing with no hidden fees.
Detailed Pricing
Usage-based pricing breakdown
| Spec | Price |
|---|---|
| Input/1M tokens | 0.45 Credits≈$0.45 |
| Output/1M tokens | 2.25 Credits≈$2.25 |
| Cache Read/1M tokens | 0.09 Credits≈$0.09 |
Billing Rules
- Output price varies by model, resolution, quality, duration, or token usage.
- Uploaded reference files may be charged separately when supported.
- Add-on capabilities such as web search or image search may be billed per request.
- Token-based models are billed by input and output tokens.
- If the primary route is unavailable, Velokey may automatically switch to a stable fallback route when possible.
- Usage is pay-as-you-go with transparent credit deduction.
* Final cost depends on the generated result.
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Affordable Doubao-Seed-2.1-turbo API
Access ByteDance's Doubao-Seed-2.1-turbo on Velokey — the fast, low-latency, cost-efficient multimodal variant of the Seed 2.1 family, with a unified endpoint and below-list pricing for production apps.
Meet Doubao-Seed-2.1-turbo and its API access
Doubao-Seed-2.1-turbo is the speed- and cost-optimized variant of ByteDance's Doubao Seed 2.1 model family. It keeps multimodal understanding over text, image, video, and document plus agentic tool use, while being optimized for high throughput and low latency at roughly half the Pro price. It fits high-volume production apps, real-time assistants, and cost-sensitive workloads. Velokey provides an affordable, easy-to-integrate Doubao-Seed-2.1-turbo API: a unified endpoint, a clear request flow, and below-list pricing for production systems, multimodal pipelines, and agentic tools.
Fast, low-latency inference
Optimized for high throughput and low latency, keeping stable, fast responses under large-scale concurrent calls — fit for real-time assistants and online services.
View Documentation →
Cost-efficient pricing
Delivers multimodal understanding and tool use at roughly half the Pro price, pay-as-you-go, lowering the cost of large-scale calls.
View Documentation →
Multimodal understanding
Handles text, image, video, and document inputs together, reasoning across modalities to cover a wide range of real business scenarios.
View Documentation →
Agentic tool use
Supports tool calling and function calling to orchestrate multi-step agent workflows, wiring the model into retrieval, execution, and automation.
View Documentation →
How to deploy the Doubao-Seed-2.1-turbo API on Velokey
Get started with just a few steps.
Sign up and get an API Key
Sign in to the Velokey console to generate an API Key that authenticates every request sent to Doubao-Seed-2.1-turbo.
Configure request parameters
Set model to doubao-seed-2-1-turbo, submit text, image, video, and document inputs, define tools as needed, and rely on the 256K context window for long inputs.
Integrate and start calling
Send requests to Velokey's unified Chat Completions, Responses, or Tokenization endpoints to power understanding and automation, with usage managed in one console.
Real-world use cases for Doubao-Seed-2.1-turbo
From high-concurrency services to real-time assistants, covering many speed- and cost-sensitive scenarios.
High-volume production apps
Keeps stable, fast responses under large request volumes, fit for online services and batch processing serving many users.
Real-time conversational assistants
Low-latency responses make chat and support assistants smoother, fit for interactions that need instant feedback.
Cost-sensitive workloads
Delivers multimodal understanding at roughly half the Pro price, fit for budget-limited scenarios that still need heavy call volumes.
Multimodal content processing
Understands content across image, video, and document inputs for analysis, moderation, and tagging pipelines.
Agentic automation
Orchestrates multi-step agent workflows with tool calling, wiring the model into retrieval, execution, and business systems.
Low-latency understanding services
With fast inference and a low price, fit for high-throughput, latency-sensitive understanding services.
Why choose Velokey for Doubao-Seed-2.1-turbo
Discount on list price
Call Doubao-Seed-2.1-turbo at a lower price on Velokey — pay-as-you-go with no forced subscription, reducing upfront cost.
Unified API interface
One API Key accesses Doubao-Seed-2.1-turbo and other models — no juggling multiple accounts and keys, simplifying integration.
Complete docs and integration guidance
Endpoint references, parameter details, and examples help you adopt multimodal input and agentic tool use smoothly.
Stable and highly available
Automatic failover and stable fallback routes maintain availability when the primary route is down, keeping production reliable.
API Reference
Complete API call examples and parameter descriptions
Endpoint
https://api.velokey.ai/v1/chat/completionsAuthentication
Bearer YOUR_API_KEYRequest Example
curl https://api.velokey.ai/v1/chat/completions \
-X POST \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seed-2-1-turbo",
"messages": [{"role": "user", "content": "Hello!"}],
"temperature": 0.7
}'Response Example
{
"id": "req_abc123",
"model": "doubao-seed-2-1-turbo",
"created": 1234567890,
"data": { ... }
}Doubao-Seed-2.1-turbo API FAQ
How does Turbo differ from Pro?
Doubao-Seed-2.1-turbo is the speed- and cost-optimized variant of the Seed 2.1 family. It keeps multimodal understanding and agentic tool use but is optimized for high throughput and low latency at roughly half the Pro price, making it better for high-concurrency and cost-sensitive scenarios.
Which modalities does it support?
Doubao-Seed-2.1-turbo supports text, image, video, and document inputs, reasoning across modalities and producing text output for real business scenarios that span multiple modalities.
Does it support tool use?
Yes. It supports tool calling and function calling to orchestrate multi-step agent workflows, wiring the model into retrieval, execution, and automation.
Which workloads is it best for?
It targets high-volume production apps, real-time conversational assistants, and cost-sensitive batch and online services, where the combination of low latency and low price is a clear advantage.
How is it billed on Velokey?
This page's pricing area shows the current Velokey price: 0.45 Credits input and 2.25 Credits output per million tokens, billed by tokens with a discount on list price, roughly half the Pro price.
Start building with Doubao Seed 2.1 Turbo today
Use one API key to access low-cost, stable AI models through Velokey.