Aion-3.0-Mini API

Aion-3.0-Mini is a multi-model roleplaying and storytelling system from AionLabs, built on the DeepSeek family of models for immersive character-driven chat and interactive fiction.
Context
131K tokens
Input
$0.91 / 1M
Output
$1.82 / 1M
Released
Jul 7, 2026

How to use Aion-3.0-Mini API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to aion-labs/aion-3.0-mini.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "aion-labs/aion-3.0-mini",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "aion-labs/aion-3.0-mini",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"aion-labs/aion-3.0-mini","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Aion-3.0-Mini API Pricing

TypePrice
Input
$0.91 / 1M
Output
$1.82 / 1M
Cached input
$0.234 / 1M

A documented pricing caveat for Aion-3.0-Mini is that OpenRouter lists a separate cache-read rate of $0.18 per 1M tokens, with cache-write priced at $0 in Pi’s model page.

Aion-3.0-Mini vs other models

ModelInputOutputContextBest for
Aion-3.0-Mini
This page
$0.91 / 1M
$1.82 / 1M
131K tokens
Agentic workflows and structured output
$5.2 / 1M
$10.4 / 1M
131K tokens
Reasoning + agents
$0.06877 / 1M
$0.13754 / 1M
131K tokens
Reasoning + agents
$1.03155 / 1M
$1.65048 / 1M
131K tokens
Reasoning + agents

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