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ByteDance Seed · Language model

Seed 1.6

bytedance-seed/seed-1.6
  • Language
Released Dec 23, 2025

Seed 1.6 is a general-purpose model released by the ByteDance Seed team. It incorporates multimodal capabilities and adaptive deep thinking with a 256K context window.

Specifications

Context window
262,144 tokens
Max output
32,768 tokens
Input
image, text, video
Output
text
Reasoning
supported
Tokenizer
Other

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • frequency_penalty
  • max_tokens
  • reasoning
  • response_format
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"bytedance-seed/seed-1.6","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'