Does Seed 1.6 Flash support zero data retention?

Not by default. See the per-route data-handling section for each route's logging stance and retention window.

Where is Seed 1.6 Flash hosted?

Seed 1.6 Flash is available on multi-region hosting through the qynio gateway. See the per-route table for details.

Is Seed 1.6 Flash trained on prompts and outputs?

No. Every hosting route for Seed 1.6 Flash is configured so customer prompts and outputs are not used to train models by default.

Is a no-KYC deposit available for Seed 1.6 Flash?

Yes. A no-KYC Data Processing Agreement is available on at least one route serving Seed 1.6 Flash. Contact hello@qyn.io to receive it.

Seed 1.6 Flash

by ByteDance

Seed 1.6 Flash is the speed-focused member of ByteDance's Seed 1.6 family, shipped alongside the flagship in June 2025. Built for high throughput and low latency, it accepts text, images, and video while retaining the line's 256K context window, and it supports thinking, tool calling, and structured output. The model targets workloads where response time matters as much as answer quality, including real-time assistants, high-volume extraction and classification, and visual understanding pipelines that process screenshots or video frames at scale. It trades some reasoning depth against the full Seed 1.6 in exchange for markedly quicker inference.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

262K

Max output

33K

Input price

$0.07 /1M

Output price

$0.30 /1M

No training by default
no-KYC deposit available

Available routes

Seed 1.6 Flash runs on 1 route through the qynio gateway. Compare residency, zero retention, and training posture at a glance — full data-handling detail per route below.

Provider	Region	Zero data retention	Training	Input	Output
BytePlus	Multi	Not by default	No	$0.07	$0.30

Data handling per route

Each route hosting Seed 1.6 Flash has its own privacy posture, residency, and no-KYC terms. Postures are maintained by qynio with a last-verification timestamp.

BytePlus — Multi-region

Zero data retention is not on by default — abuse monitoring, 180-day retention. No training on customer data. GLOBAL; wallets; deposit available.

Zero data retention: Not by default — abuse monitoring, 180-day retention. Derived from the logging and moderation facts.
Training: No training on customer data.
Logging: Abuse monitoring (180-day retention)
Moderation: Not established
Caching: Not established
Subprocessor access: Not established
no-KYC deposit: deposit available
Transfer mechanism: wallets

Get started

Call Seed 1.6 Flash through the qynio gateway with one API key. Let your coding agent set it up, or call it directly — qynio is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up qynio for you.

Or call it directly

1import OpenAI from "openai";
2
3const client = new OpenAI({
4  apiKey: process.env.QYN_API_KEY,
5  baseURL: "https://api.qyn.io/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "bytedance:ap/seed-1.6-flash",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);