How much does Aion 3.5 cost?

Aion 3.5 is billed pay-as-you-go at $3.30 per 1M input tokens and $6.60 per 1M output tokens. There is no subscription — you only pay for what you use.

What can Aion 3.5 do?

Aion 3.5 supports Tool calling.

Is Aion 3.5 free to use?

Aion 3.5 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use Aion 3.5 via the API?

Aion 3.5 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID aion-3.5 with your Api.Airforce API key.

Aion 3.5 is AionLabs's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

AionLabsPaidOperational

Aion 3.5

API model name: aion-3.5

Aion 3.5 is AionLabs's chat model, served on the Api.Airforce unified API. Capabilities include Tool calling. It is priced at $3.30 per million input tokens and $6.60 per million output tokens. That is below the provider's $3.00 official input rate. 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

$3.30

Output / 1M tokens

$6.60

Cache read / 1M tokens

$0.83

Cache write / 1M tokens

$4.13

Official input rate

$3.00

Official output rate

$6.00

Api.Airforce price vs. the provider's official rate.

Specifications

Provider: AionLabs
Type: chat model

Capabilities

Tool calling

What is Aion 3.5 used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
Agents & automation — function calling and tool use for multi-step workflows.

Aion 3.5 vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Aion 3.5	—	—	$3.30	$6.60
Aion 2.0	—	—	$0.88	$1.76
Aion 3.0	—	—	$3.30	$6.60
Aion 3.0 Mini	—	—	$0.77	$1.54

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

Aion 3.5 — frequently asked questions

How much does Aion 3.5 cost?: Aion 3.5 is billed pay-as-you-go at $3.30 per 1M input tokens and $6.60 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Aion 3.5 do?: Aion 3.5 supports Tool calling.
Is Aion 3.5 free to use?: Aion 3.5 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Aion 3.5 via the API?: Aion 3.5 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID aion-3.5 with your Api.Airforce API key.
Who makes Aion 3.5?: Aion 3.5 is AionLabs's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Aion 3.5 via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass aion-3.5 as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "aion-3.5",
    "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="aion-3.5",
    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: "aion-3.5",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);