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.

Model Type:

✓Seed 2.0 Pro Seed 2.0 Lite Seed 2.0 Mini Seed 2.0 Code

Price:

$0.444 - 1.333(~ 32 - 96 credits) per 1M input tokens; $2.222 - 6.667(~ 160 - 480 credits) per 1M output tokens

$0.089(~ 6.4 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 Pro API pricing and access

Use Doubao Seed 2.0 Pro through one EvoLink API key. This page focuses on the flagship Pro variant for higher-quality assistants, longer context workflows, and production use where quality matters more than minimum cost.

PRICING

PLAN	CONTEXT WINDOW	MAX OUTPUT	INPUT	OUTPUT	CACHE READ
Doubao Seed 2.0 Pro	256,000	128,000	≤32.0K$0.444 (32 Credits) ≤128.0K$0.667 (48 Credits) ≤256.0K$1.333 (96 Credits)	≤32.0K$2.222 (160 Credits) ≤128.0K$3.333 (240 Credits) ≤256.0K$6.667 (480 Credits)	≤32.0K$0.089 (6.4 Credits) ≤128.0K$0.089 (6.4 Credits) ≤256.0K$0.089 (6.4 Credits)
Cache Storage Cached prompt tokens billed by storage duration					$0.002/1M tokens/hour (0.17 Credits)

Pricing Note: Prices show both USD and Credits. Units default to / 1M tokens unless noted separately.

Cache Hit: Price applies to cached prompt tokens.

What can you build with Doubao Seed 2.0 Pro?

Enterprise Assistants and Q&A

Use Seed 2.0 Pro for higher-quality assistants, internal knowledge systems, and enterprise Q&A flows where output quality and instruction-following matter most.

Build assistants

Use-case showcase of Doubao Seed 2.0 feature 1

Long-Context Analysis

Seed 2.0 Pro is better suited to longer prompts, larger documents, and multi-step reasoning flows where you want the strongest general model in the family.

Analyze long context

Use-case showcase of Doubao Seed 2.0 feature 2

Production Agents and Workflows

Choose Pro for agent workflows and user-facing AI features when response quality is the priority and you want the main Seed 2.0 experience on EvoLink.

Run production agents

Use-case showcase of Doubao Seed 2.0 feature 3

Why teams choose Doubao Seed 2.0 Pro

Seed 2.0 Pro is the right choice when your API selection is driven by output quality, long-context capability, and stronger general-purpose performance in production.

Flagship quality in the Seed 2.0 family

Pro is the main variant for premium assistants, complex prompts, and product experiences where higher-quality output is worth the extra cost.

One gateway for premium workloads

Use Pro through the same EvoLink API gateway and switch to Lite, Mini, or Code only when workload economics change.

Transparent commercial pricing

The pricing table below makes Pro easy to evaluate as a production API purchase, not just a model description page.

How to integrate Doubao Seed 2.0 Pro API

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

Step 1 — Authenticate

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

Step 2 — Use the Pro model ID

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

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.

View API Docs

Core Doubao Seed 2.0 Pro API capabilities

Model facts for the flagship Seed 2.0 variant, plus EvoLink pricing and access signals

Quality

Flagship general quality

Use Pro when you want the strongest general-purpose output profile in the Seed 2.0 family for assistants, reasoning, and user-facing AI features.

Context

256K Context Window

Handle long documents, large prompt scaffolds, and complex multi-step workflows with up to 256K context.

Pricing

Prompt-Length Pricing

Pro pricing scales by prompt length, making it easier to evaluate premium quality against real production usage patterns.

Caching

Cache Hit Billing

Lower repeated prompt costs with cache hit billing in workflows that reuse system prompts, prefixes, and agent scaffolding.

Compatibility

OpenAI-Compatible Access

Keep your existing OpenAI SDK flow and switch to Pro through one EvoLink endpoint with minimal application changes.

Use Cases

Production assistant fit

Pro is the best-fit variant for enterprise assistants, internal copilots, and premium general text generation workloads.

Doubao Seed 2.0 Pro API FAQs

Everything you need to know about the product and billing.

Doubao Seed 2.0 Pro API is the flagship general-purpose 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 Pro when you want the strongest general output quality in the Seed 2.0 family for assistants, long-context Q&A, agent workflows, and premium production features.

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.