---
name: Doubao Seed 2.1 Pro
slug: doubao-seed-2-1-pro
type: LLM
providers:
  - nano-gpt
description: >-
  Higher-capability model in the Doubao Seed 2.1 family for agentic coding,
  long-context analysis, complex instruction following, and productivity
  workflows. Supports a 256k context window and up to 128k output tokens. Note:
  privacy and logging guarantees may be limited.
tags:
  - seed
  - llm
is_open_source: false
context_window: 256000
max_output: 128000
pricing:
  - image: 0
    input: 1
    output: 5
    provider: nano-gpt
release_date: '2026-06-23'
capabilities:
  audio: false
  vision: false
  tool_use: false
  citations: false
  reasoning: false
---
Doubao Seed 2.1 Pro is a LLM model.
Higher-capability model in the Doubao Seed 2.1 family for agentic coding, long-context analysis, complex instruction following, and productivity workflows. Supports a 256k context window and up to 128k output tokens. Note: privacy and logging guarantees may be limited.