Does Seed 1.8 support zero data retention?

Yes. Seed 1.8 is available with zero data retention on DeepInfra through the Opper gateway. Other routes carry zero data retention with abuse monitoring; see each route's window in the data-handling section.

Where is Seed 1.8 hosted?

Seed 1.8 runs on US hosting routes through the Opper gateway.

Is Seed 1.8 trained on prompts and outputs?

No. Every hosting route for Seed 1.8 is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for Seed 1.8?

Yes. A GDPR Data Processing Agreement is available on at least one route serving Seed 1.8. Contact hello@opper.ai to receive it.

Seed 1.8

by ByteDance

Seed 1.8 is ByteDance's generalized agentic model that unifies perception, reasoning, and action in a single foundation. It combines text and image input with native search, code, and graphical user interface agent capabilities, enabling end-to-end task automation across information retrieval, GUI navigation, code execution, and multi-step workflows. The model is built for agentic reasoning and scores 67.6 on BrowseComp-en, where ByteDance reports it surpassing other leading models on this web-browsing benchmark. It supports three adaptive thinking modes that automatically adjust processing based on task complexity, balancing reasoning depth with inference efficiency. Seed 1.8 also delivers strong long-video understanding, scoring 87.8 on VideoMME. With a 256k context window and unified agent capabilities, Seed 1.8 targets real-world applications that need autonomous decision-making, iterative task completion, and grounded reasoning across multiple modalities and tool types.

Call Seed 1.8 on Opper with the OpenAI SDK. Sign up without a credit card. Get started

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Key info

Input

Output

Features

Context window

262K

Max output

66K

Input price

$0.25 /1M$0.05 cache read

Output price

$2.00 /1M

US residency available
Zero data retention on pay-as-you-go
No training by default
GDPR DPA available

Available routes

Seed 1.8 runs on 2 different routes through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
BytePlus	Multi		No	$0.25	$2.00	$0.05
DeepInfra	US		No	$0.25	$2.00	$0.05

Uptime and availability

One of Seed 1.8's 2 routes is on the monitoring board, so the figure below is that provider's availability rather than the model's.

100%route uptime, last 30 days

Its other routes aren't measured here yet.

Name a second model in the same request and the gateway tries it on retriable errors, so a busy hour never has to reach your users. Set up a fallback chain.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. 1 further route is not on the board yet. See uptime for every provider Opper monitors.

Data handling per route

Each route hosting Seed 1.8 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

BytePlus — Multi-region

Zero data retention with abuse monitoring: prompts and outputs are kept for up to 180 days for abuse monitoring only, and are not used for training. No training on customer data. GLOBAL; SCCs; DPA available.

Zero data retention: With abuse monitoring, 180-day window.
Training: No training on customer data.
Logging: Abuse monitoring (180-day retention)
Abuse monitoring: On by default, holds flagged content, 180 days, stored in Malaysia, a person can view samples
Caching: Content cached for replay
GDPR DPA: DPA available
Transfer mechanism: SCCs

DeepInfra — United States🇺🇸

Zero data retention: nothing is logged, held for abuse monitoring or used for training. No training on customer data. US; unknown; DPA available.

Zero data retention: Yes. Nothing is logged, held for abuse monitoring or used for training.
Training: No training on customer data.
Logging: None
Abuse monitoring: No classifier
GDPR DPA: DPA available
Transfer mechanism: unknown

Get started

Call Seed 1.8 through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.

Seed 1.8 is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.

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 Opper for you.

Or call it directly

1import OpenAI from "openai";
2
3const client = new OpenAI({
4  apiKey: process.env.OPPER_API_KEY,
5  baseURL: "https://api.opper.ai/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "seed-1.8",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);