Seed 1.6

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.

ChatByteDance262k tokens$0.2725 / $2.1801 · 1M

bytedance-seed/seed-1.6

Context
262k tokens
Completion cap
32,768
Tools
Yes
JSON
Yes
Released
2025-12-23

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance-seed/seed-1.6",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Seed 1.6?
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. Seed 1.6 runs on the Geek Hub API (OpenAI-compatible). Model id: bytedance-seed/seed-1.6.
Is Seed 1.6 free?
No. Input is $0.2725 per 1M tokens and output is $2.1801 per 1M tokens on Geek Hub (markup included).
What is the context length of Seed 1.6?
Seed 1.6 has a 262k tokens context window. It supports up to 32,768 completion tokens.
Does Seed 1.6 support tool calling and structured outputs?
Seed 1.6 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was Seed 1.6 released?
Seed 1.6 was released on 2025-12-23.

More models from ByteDance