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ByteDance Seed · Language model

Seed 1.6 Flash

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

Seed 1.6 Flash is an ultra-fast multimodal deep thinking model by ByteDance Seed, supporting both text and visual understanding. It features a 256k context window and can generate outputs of...

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-flash","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'