BytedancePaidOperational

Doubao Seed Evolving

API model name: doubao-seed-evolving

Doubao Seed Evolving is Bytedance's chat model, served on the Api.Airforce unified API. It is priced at $0.83 per million input tokens and $4.17 per million output tokens. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

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Pricing

Input / 1M tokens

$0.83

Output / 1M tokens

$4.17

Cache read / 1M tokens

$0.08

Specifications

Provider: Bytedance
Type: chat model

What is Doubao Seed Evolving used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.

Doubao Seed Evolving vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Doubao Seed Evolving	—	—	$0.83	$4.17
Doubao 1.5 Thinking Pro	—	—	$0.36	$1.48
Doubao 1.5 Thinking Vision Pro	—	—	$0.56	$1.66
Doubao 1.5 Ui Tars	—	—	$0.65	$2.21

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

Related models

Doubao 1.5 Thinking ProBytedance · $0.36 / 1M Doubao 1.5 Thinking Vision ProBytedance · $0.56 / 1M Doubao 1.5 Ui TarsBytedance · $0.65 / 1M Doubao 1.5 Lite 32kBytedance · $0.07 / 1M Doubao 1.5 Pro 32kBytedance · $0.14 / 1M Doubao 1.5 Vision LiteBytedance · $0.27 / 1M Doubao 1.5 Vision ProBytedance · $0.56 / 1M Doubao 1.5 Vision Pro 32kBytedance · $0.14 / 1M Doubao Embedding Large TextBytedance · $0.13 / 1M Doubao Embedding TextBytedance · $0.13 / 1M Doubao Embedding VisionBytedance · $101.11 / 1M Doubao Lite 128kBytedance · $0.21 / 1M

Doubao Seed Evolving — frequently asked questions

How much does Doubao Seed Evolving cost?: Doubao Seed Evolving is billed pay-as-you-go at $0.83 per 1M input tokens and $4.17 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Doubao Seed Evolving do?: Doubao Seed Evolving is Bytedance's chat model, accessible through the Api.Airforce API.
Is Doubao Seed Evolving free to use?: Doubao Seed Evolving is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Doubao Seed Evolving via the API?: Doubao Seed Evolving is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID doubao-seed-evolving with your Api.Airforce API key.
Who makes Doubao Seed Evolving?: Doubao Seed Evolving is Bytedance's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Doubao Seed Evolving via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass doubao-seed-evolving as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seed-evolving",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
    model="doubao-seed-evolving",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
  model: "doubao-seed-evolving",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);