Seed 2.1 Pro

Seed 2.1 Pro: a seed model from Volcengine, ~256K context

Published

scheduleReleased：June 23, 2026

Seed 2.1 Pro is a seed model from Volcengine (~256K context, input around $0.8906/1M tokens). Suitable for assistants, content generation, knowledge Q&A and business automation

starsCapabilities

visibilityVision understandingcodeFunction callingdata_objectStructured output

paymentsContext and pricing

Context limit256,000

Max output256,000

Input price$0.8906/ 1M tokens

Output price$4.45301/ 1M tokens

Cached input price$0.17812/ 1M tokens

descriptionOverview

Overview

Seed 2.1 Pro is provided by Volcengine, model ID doubao-seed-2-1-pro-260628

Key specs

Context: 256K tokens
Max output: 256K tokens
Input price: $0.8906/1M
Output price: $4.45301/1M

Best for

Consider Seed 2.1 Pro when comparing context length, pricing, multimodal support and relay availability

lightbulbUse cases

Image and multimodal Q&A
Visual content analysis
Document and screenshot understanding

thumb_upStrengths

Very long context (~256K), good for long documents and codebases
Supports image and multimodal input
High single-response output limit (~256K)

infoLimitations

Pricing and availability vary by upstream and relay; verify with official docs and tests

linkReferences

open_in_newhttps://www.volcengine.com/docs/82379/1099475