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AionLabs: Aion 3.5: AI model

Aion 3.5 is a multi-model system for roleplay and storytelling from AionLabs with a 262K-token context window. Reachable from inside Iran through Hormouz.

Context window:
262,144 tokens
Input:
$3/1M tokens
Output:
$6/1M tokens
Type:
text
  • Tools
  • Streaming
  • Long context

Thinking levels: Always thinks · max · high · low

Aion 3.5 is AionLabs' storytelling system, built on GLM models. Instead of one model writing alone, several specialised models each contribute to a reply, which produces stronger narrative structure and more compelling tension and conflict. It is the full-size version; Aion 3.5 Mini offers the same approach at lower cost.

It accepts text input and returns text, and supports tool calling, structured JSON output and streaming. It always reasons before answering, and you choose how hard it thinks with the reasoning effort setting. Aion 3.5 is commonly used for interactive fiction, character roleplay, long-form story writing and narrative design. Hormouz serves it behind an OpenAI-compatible API: point your base URL at Hormouz, drop in a Hormouz key, and existing OpenAI SDK code runs without changes.

Pricing is usage-based: $3 per million input tokens and $6 per million output tokens. There is no fixed monthly fee, and you pay only for the tokens you use. Hormouz provides stable access to the model from inside Iran, with no foreign credit card or circumvention tooling required.

Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple specialized models each...

Quickstart

curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "aion-labs/aion-3.5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Specs

VendorAionLabs
TypeText
Context window262,144 tokens
Pricing$3.00/M in · $6.00/M out
APIChat Completions
CapabilitiesStreaming · Tools

Code example

cURL
curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "aion-labs/aion-3.5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
Python
from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
    model="aion-labs/aion-3.5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
JavaScript
import OpenAI from "openai";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
  model: "aion-labs/aion-3.5",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Buy the AionLabs: Aion 3.5 API, paid in rial

  • Buy credit with an Iranian bank card; no foreign card or account needed.
  • One Hormouz key reaches AionLabs: Aion 3.5 and 600+ other models, and you pay only for what you use.
  • No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.
Create an account

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FAQ

How much does Aion 3.5 cost?
Pricing is usage-based: $3 per million input tokens and $6 per million output tokens. There is no fixed monthly fee, and you pay only for the tokens you use.
How do I access Aion 3.5 from inside Iran?
Create an account on Hormouz and generate an API key. Hormouz provides a stable path to the model from inside Iran, with no foreign credit card or circumvention tooling required.
Is Aion 3.5 compatible with OpenAI code?
Yes. Hormouz exposes an OpenAI-compatible API. Point your base URL at Hormouz and swap in your Hormouz key. Your existing SDKs and code run without a rewrite.
What context window and capabilities does Aion 3.5 have?
It has a 262K-token context window, accepts text input, and supports tool calling, structured JSON output and streaming. It always reasons before answering, and you choose how hard it thinks with the reasoning effort setting.
What is Aion 3.5 good for?
Typical uses are interactive fiction, character roleplay, long-form story writing and narrative design.

Updated 2026-10-13