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Doubao Seed 2.0 API

Doubao Seed 2.0 is ByteDance's latest model family for production text workloads. EvoLink gives you one OpenAI-compatible endpoint for Pro, Lite, Mini, and Code, so you can choose the right model for quality, cost, latency, or coding tasks without changing providers.
Price: 

$0.083 - 0.250(~ 6 - 18 credits) per 1M input tokens; $0.500 - 1.500(~ 36 - 108 credits) per 1M output tokens

$0.017(~ 1.2 credits) per 1M cache read tokens

Cache storage charged separately per hour.

Highest stability with guaranteed 99.9% uptime. Recommended for production environments.

Use the same API endpoint for all versions. Only the model parameter differs.

Doubao Seed 2.0 Lite API pricing and access

Use Doubao Seed 2.0 Lite through one EvoLink API key. This page focuses on the Lite variant for cost-efficient production traffic, balanced quality, and transparent pricing when you don't need the flagship Pro profile.

Hero showcase of Doubao Seed 2.0 API

What can you build with Doubao Seed 2.0 Lite?

Cost-Efficient Chat and Support

Use Seed 2.0 Lite for support automation, internal assistants, and everyday production chat where stable cost matters more than premium reasoning depth.

Use-case showcase of Doubao Seed 2.0 feature 1

Content and Workflow Automation

Generate summaries, rewrite content, classify tickets, and automate repetitive language tasks with a lower-cost API model that still fits mainstream product workloads.

Use-case showcase of Doubao Seed 2.0 feature 2

Scalable Production Traffic

Choose Lite when you need a model that keeps API spend under control across sustained daily traffic, especially in products where response quality only needs to be reliably good, not maximal.

Use-case showcase of Doubao Seed 2.0 feature 3

Why teams choose Doubao Seed 2.0 Lite

Seed 2.0 Lite is the practical choice when your buying decision is driven by cost efficiency, stable production traffic, and easy access through one API gateway.

Better fit for cost-sensitive traffic

Use Lite for high-volume production workloads where premium-model pricing would be unnecessary overhead.

One gateway, lower friction

Keep the same EvoLink integration while switching between Lite and other Seed 2.0 variants as workload requirements change.

Transparent production pricing

Compare Lite pricing directly below and decide when its lower-cost profile is enough for your workload.

How to integrate Doubao Seed 2.0 Lite API

Use the EvoLink API with the Lite model enum. Migration is usually a base URL swap plus `doubao-seed-2.0-lite` in your existing OpenAI-compatible workflow.

1

Step 1 — Authenticate

Create an EvoLink API key and send requests with Bearer token authentication from your app, agent, or backend service.

2

Step 2 — Use the Lite model ID

Set model to `doubao-seed-2.0-lite` when you want the Lite variant on EvoLink.

3

Step 3 — Tune outputs

Adjust temperature, top_p, max_tokens, stream, and other parameters. Prompt-length tiers and cache billing are applied automatically in the API pricing model.

Core Doubao Seed 2.0 Lite API capabilities

Model facts for the cost-efficient Seed 2.0 variant, plus EvoLink pricing and access signals

Cost

Cost-efficient general text

Lite is designed for everyday production text workloads where stable quality is enough and API cost matters more than peak model performance.

Context

256K Context Window

Keep long prompt support while using a lower-cost variant for mainstream production workloads.

Pricing

Prompt-Length Pricing

Lite pricing scales by prompt length, helping teams keep cost aligned to actual context use.

Caching

Cache Hit Billing

Reduce repeated prompt cost in support, operations, and content workflows with reusable prompt structures.

Compatibility

OpenAI-Compatible Access

Use Lite through the same EvoLink gateway and existing OpenAI-compatible client stack.

Use Cases

Balanced production coverage

Lite works well for customer support, operational chat, content automation, and other reliable day-to-day traffic.

Doubao Seed 2.0 Lite API FAQs

Everything you need to know about the product and billing.

Doubao Seed 2.0 Lite API is the cost-efficient model in the Seed 2.0 family. On EvoLink it is available through the same OpenAI-compatible API gateway as the other Seed 2.0 variants.
Choose Lite when API cost matters more than getting the flagship quality profile. It is a strong fit for support automation, content operations, everyday chat, and sustained production traffic.
Seed 2.0 uses length-based pricing tiers for input and output. Requests within 32K prompt length are priced lower than 128K or 256K tiers, so cost scales with how much context you actually consume. On EvoLink, the pricing section below is the canonical place to compare costs by variant.
Seed 2.0 supports cache hit billing. When the same system prompts or prompt prefixes are reused, cached tokens are billed below standard input rates. That makes a visible difference in production workloads with repeated prompt scaffolding, agent prefixes, or stable enterprise instructions.
Use these model enums in your API requests: doubao-seed-2.0-pro, doubao-seed-2.0-lite, doubao-seed-2.0-mini, and doubao-seed-2.0-code. EvoLink keeps access unified behind one API gateway, so variant selection happens through the model field rather than a separate vendor integration.
Yes. EvoLink exposes an OpenAI-compatible API endpoint for Seed 2.0. In most integrations, migration means changing the base URL, using your EvoLink API key, and selecting the right Seed 2.0 model enum.
Seed 2.0 models support a maximum output of 128,000 tokens (128K) per request. The context window supports up to 256K tokens for input.
Pro fits premium assistants, long-form generation, and higher-quality general tasks. Lite fits cost-aware chat and content workloads. Mini fits real-time responses, routing, classification, and large-scale throughput. Code fits software engineering, code review, debugging, and developer tooling.
Doubao Seed 2.0 Lite API Pricing & Access | EvoLink