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doubao-seed-2.0-pro is the flagship of ByteDance’s 豆包 (Doubao) family — strong on Chinese-language tasks, vision-capable, with a long context window. Pricing: see the rate card.

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Protocols

ProtocolPath
OpenAI Chat CompletionsPOST https://llm.bytespike.ai/v1/chat/completions

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Quickstart

curl https://llm.bytespike.ai/v1/chat/completions \
  -H "Authorization: Bearer $BYTESPIKE_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "model": "doubao-seed-2.0-pro",
    "messages": [{ "role": "user", "content": "Hello, ByteSpike." }]
  }'

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Capabilities

CapabilitySupported
Chat Completions✅
Streaming (SSE)✅
Tools / function calling✅
JSON mode✅
Vision (image input)✅
Long context (200K+)✅
Context window200K tokens

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When to use

  • Chinese-language workloads — Doubao’s strongest dimension.
  • Vision tasks in CN region — strong OCR + image understanding.
  • Long-context Chinese tasks — 200K window for large documents.

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Next

  • doubao-seed-1.5-pro — older, slightly cheaper (legacy)
  • glm-5.1 — Zhipu Chinese-LLM alternative