Doubao Seed 1.8

Q: What is the context length of Doubao Seed 1.8?

Doubao Seed 1.8 has a 256,000 token context window. It supports up to 64,000 output tokens.

Q: How much does Doubao Seed 1.8 cost?

On AIHubMix, Doubao Seed 1.8 costs $0.11 per million input tokens and $0.274 per million output tokens. Cached input reads are billed at $0.022 per million tokens.

Q: What modalities does Doubao Seed 1.8 support?

Doubao Seed 1.8 accepts text, image and video input. It returns text output.

Q: What capabilities does Doubao Seed 1.8 support?

Doubao Seed 1.8 supports thinking, web search, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.

Q: How do I call Doubao Seed 1.8 via API?

Doubao Seed 1.8 is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to doubao-seed-1-8 — no other code changes needed.

Q: Who created Doubao Seed 1.8?

Doubao Seed 1.8 is developed by Doubao. AIHubMix aggregates it alongside models from other providers behind one API and one bill.

doubao-seed-1-8llms.txt

ByteDance

Doubao's strongest multimodal Agent model Seed1.8 has powerful multimodal capabilities, supports image and text input, and can efficiently and accurately complete tasks in scenarios such as information retrieval, code generation, GUI interaction, and complex workflows, meeting increasingly diverse technical demands.

Pricing

Tier	Pricing	Cache Read
Tier	Pricing	Cache Read
Input<=32K, Output<=200	$0.110$0.274	$0.021918/M tokens
Input<=32K, Output>200	$0.110$1.096	$0.021918/M tokens
32K<Input<=128K	$0.164$2.192	$0.02191452/M tokens
128K<Input<=256K	$0.329$3.288	$0.0219184292/M tokens

Input Modalities

Text
Vision
Video

Output Modalities

Text

Capabilities

Thinking
Web
Tools
Tool calling
Structured outputs

Providers

Bytedance doubao-seed-1-8-251228

Pricing$0.110$0.274

Cache Read$0.021918/M tokens

Pricing$0.110$1.096

Cache Read$0.021918/M tokens

Pricing$0.164$2.192

Cache Read$0.02191452/M tokens

Pricing$0.329$3.288

Cache Read$0.0219184292/M tokens

Context256K

Max output64K

Latency1.8S

Throughput30.1TPS

Uptime

100.00% uptime 2 days ago

100.00% uptime yesterday

100.00% uptime today

Performance for doubao-seed-1-8

Uptime is the percentage of requests that succeeded over the past 72 hours. AIHubMix continuously monitors every provider and automatically retries with the next-best provider when one returns an error or responds too slowly; Latency is total round-trip time (lower is better); Throughput is how fast the model writes (tokens per second, higher is better).

Uptime

Latency

Throughput

Try this model

Python

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AIHUBMIX_API_KEY"],
    base_url="https://aihubmix.com/v1",
)

response = client.chat.completions.create(
    model="doubao-seed-1-8",
    messages=[
      {
        "role": "user",
        "content": "Hello, how are you?"
      }
    ],
    max_tokens=1024,
    stream=False,
)

print(response.choices[0].message.content)

Frequently asked questions

What is Doubao Seed 1.8?

What is the context length of Doubao Seed 1.8?

How much does Doubao Seed 1.8 cost?

What modalities does Doubao Seed 1.8 support?

What capabilities does Doubao Seed 1.8 support?

How do I call Doubao Seed 1.8 via API?

Who created Doubao Seed 1.8?

Compare Doubao Seed 1.8

Doubao Seed 1.8vsQwen3.8 Max Preview Doubao Seed 1.8vsKimi K3 Doubao Seed 1.8vsGLM 5.2 Doubao Seed 1.8vsGrok 4.5

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The Doubao large-model team has launched a new-generation professional-grade multimodal video-creation model, Seedance 2.0. It supports images, videos, and audio as multimodal reference inputs to generate videos, and also offers video editing and extension capabilities. It can accurately reproduce various details while maintaining stable character features, delivers highly realistic audiovisual stability, and is deeply adapted to core scenarios such as commercial advertising, film and TV production, and social media marketing.

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New

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Seedance 2.0 fast is a next-generation multimodal video-creation model launched by the Doubao large-model team; it inherits the core features and advantages of Seedance 2.0 and generates content faster.