Doubao Seed Evolving API

ByteDance's self-evolving flagship with 1M context, vision input, switchable thinking and agentic tool use.

$0.92

Input / 1M tokens

$4.62

Output / 1M tokens

Context window

ByteDance

Provider

Why use Doubao Seed Evolving on NovAI?

Self-evolving flagship - continuously upgraded by ByteDance
1M context window
Vision input (text + image)
Switchable thinking (enabled / disabled)
Function calling + web search
Official-direct Volcengine access

Pricing

	NovAI	OpenRouter	Access
Input / 1M tokens	$0.92	N/A	Official direct
Output / 1M tokens	$4.62	N/A	Official direct

Best use cases

General chat assistants
Complex reasoning tasks
Agentic workflows
Long-document analysis
Content generation

Quick start

cURL

curl https://aiapi-pro.com/v1/chat/completions -H "Authorization: Bearer $NOVAI_API_KEY" -H "Content-Type: application/json" -d '{
    "model": "doubao-seed-evolving",
    "messages": [{"role":"user","content":"Explain what this API does in one sentence."}]
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://aiapi-pro.com/v1", api_key="YOUR_NOVAI_API_KEY")
resp = client.chat.completions.create(
    model="doubao-seed-evolving",
    messages=[{"role":"user","content":"Explain what this API does in one sentence."}],
)
print(resp.choices[0].message.content)

Works with any OpenAI-compatible SDK - just set base_url to https://aiapi-pro.com/v1 and use your NovAI API key. Full reference in the API docs.