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Volcengine Ark Coding Plan

Seed Evolving API

Volcengine Ark Coding Plan
About

Build advanced reasoning agents with Seed Evolving, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers available completely free of charge, native tool calling support. Access Seed Evolving via the Volcengine Ark Coding Plan API with up to 256K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
256K

Tokens

Input Limit
256K

Tokens

Max Output
256K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free

Caching (per 1M tokens)

Read
Free
Frequently Asked Questions

Seed Evolving by Volcengine Ark Coding Plan costs Free per 1M input tokens and Free per 1M output tokens. Cached reads cost Free per 1M tokens.

Model Details
ID
doubao-seed-evolving
Provider
Volcengine Ark Coding Plan
Family
seed
Release Date
Jun 23, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
ARK_CODING_PLAN_API_KEY
API Base URL
https://ark.cn-beijing.volces.com/api/coding/v3
Documentation