Doubao Seed Character

doubaodoubao/doubao-seed-character

Doubao Seed Character — roleplay / persona-driven chat model.

Volcano Ark model list (Doubao Seed family) ↗Roleplay scenario prompt guide (Volcano Ark) ↗

Doubao Seed Character (upstream ID doubao-seed-character-251128) is ByteDance/Volcano Ark's specialized roleplay and persona-driven chat model. It is the successor to the earlier doubao-1-5-pro-32k-character variant (250715) and is explicitly positioned for immersive character interaction, social companionship, virtual hosting, and multi-turn persona consistency scenarios.

For TheRouter operators the model offers an extremely low-cost Chinese-language roleplay endpoint (input $0.1111 / output $0.2778 per million tokens) with full OpenAI compatibility, tool calling, JSON mode and streaming. It is the natural choice when the workload is long multi-turn character consistency rather than general reasoning or coding.

Best for

• Long multi-turn roleplay, character consistency, social companionship bots, virtual hosts, and immersive narrative agents where persona adherence across dozens of turns is the primary requirement.

Reach for something else if

• General reasoning, math, code generation or tool-heavy agent workflows — route to doubao-seed-2-0-pro, doubao-seed-code or doubao-seed-1-8 instead.

Context Length

131K

Max Output

33K

Input Priceper 1M tokens

$0.1296/ 1M tokens

Output Priceper 1M tokens

$0.324/ 1M tokens

Modalities

text→text

Pricing Breakdown

Type	Rate
Input	$0.1296 / 1M tokens
Output	$0.324 / 1M tokens

Supported Parameters

temperaturemax_tokenstop_ptoolstool_choiceresponse_formatstop

Specifications

Upstream model ID	doubao-seed-character-251128github.com ↗	verified
Release date (version suffix)	2025-11-28github.com ↗	verified
Predecessor	doubao-1-5-pro-32k-character-250715github.com ↗	verified
Training cutoff	Not publicly disclosed	unknown
License	Not publicly disclosed (closed model)	unknown

API Usage Examples

Use the global api.therouter.ai endpoint shown below for new integrations; the legacy China accelerated endpoint is retired.

cURL

curl https://api.therouter.ai/v1/chat/completions   -H "Content-Type: application/json"   -H "Authorization: Bearer $THE_ROUTER_API_KEY"   -d '{
    "model": "doubao/doubao-seed-character",
    "messages": [
      {"role": "user", "content": "Summarize the key points from this input."}
    ]
  }'

API guide

Chat completion

cURL

curl https://api.therouter.ai/v1/chat/completions \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"doubao/doubao-seed-character","messages":[{"role":"user","content":"你是一个可爱的猫娘，请始终保持这个人设。"}]}'

More from doubao

doubao/doubao-seed-2-0-pro doubao/doubao-seed-1-8 doubao/doubao-seed-code

Similar models

Cross-provider sibling models

baidu/ernie-4.5

Another strong Chinese-language general model; useful cross-provider diversity for roleplay traffic.

Frequently asked

What is Doubao Seed Character optimized for?

It is ByteDance's dedicated roleplay model. The primary use case is long, coherent, persona-consistent conversations (social companion, virtual character, narrative agent). It is not intended as a general reasoning or coding model.

re-authored by TheRouterwww.volcengine.com ↗

Fact ledger — every claim on this page traces here

source	URL	retrieved
Upstream model ID	github.com ↗	2026-05-26	verified
Release date (version suffix)	github.com ↗	2026-05-26	verified
Predecessor	github.com ↗	2026-05-26	verified
Training cutoff	—	—	unknown
License	—	—	unknown
What is Doubao Seed Character optimized for?	www.volcengine.com ↗	2026-05-26	to verify