---
id: "bytedance-seed/seed-1.6-flash"
also: ["bytedance-seed/seed-1.6-flash-20250625"]
cheapest_list_usd_per_m: "0.075 in, 0.3 out, at seed/fp8 on openrouter"
cheapest_effective_usd_per_m: "0.0745 in, 0.2964 out, at seed/fp8 on openrouter"
context: 262144
max_output: 32768
input: ["image", "text", "video"]
output: ["text"]
released: "2025-12-23"
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["frequency_penalty", "include_reasoning", "max_tokens", "reasoning", "response_format", "stop", "structured_outputs", "temperature", "tool_choice", "tools", "top_p"]
endpoints: 1
gateways: "openrouter (1)"
no_training: 1
trains: 0
retains_prompts: 0
---
# ByteDance Seed: Seed 1.6 Flash

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...