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Source: BytePlus ModelArk docs. All models support tool/function calling. Activate each model in the Ark Console before use.

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Seed 2.0

seed-2-0-pro-260215

Reasoning · Speedbyteplus/seed-2-0-pro-260215BytePlus’s flagship Seed 2.0 model. Excels at complex reasoning, coding, and agentic tasks with deep thinking capability and multimodal understanding across text, images, and video.
  • ~$0.47 / ~$2.37
  • 256K context
  • Text, Image, Video input
  • Deep thinking

seed-2-0-lite-260228

Reasoning · Speedbyteplus/seed-2-0-lite-260228Cost-efficient Seed 2.0 variant optimised for high-concurrency and latency-sensitive workloads. Supports multimodal input and tool calling at a fraction of the Pro cost.
  • $0.25 / $1
  • 256K context
  • Text, Image, Video input

seed-2-0-mini-260215

Reasoning · Speedbyteplus/seed-2-0-mini-260215Lightweight Seed 2.0 model designed for edge deployments and cost-sensitive scenarios requiring fast responses with minimal resource usage.
  • ~$0.10 / ~$0.40
  • 256K context
  • Text input

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Seed 1.x

seed-1-8-251228

Reasoning · Speedbyteplus/seed-1-8-251228Advanced multimodal model with deep thinking and strong agent capabilities. Supports text, image, video, and document understanding with structured output (beta) and context caching.
  • $0.25 / $2
  • 256K context
  • 64K max output
  • Text, Image, Video input
  • Deep thinking

seed-1-6-250915

Reasoning · Speedbyteplus/seed-1-6-250915Stable text generation model from the Seed 1.x series, suited for general-purpose NLP tasks, summarisation, and instruction following.
  • ~$0.25 / ~$2
  • 262K context
  • Text input