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Aion-RP 1.0 (8B) API: toman pricing and code

aion-labs/aion-rp-llama-3.1-8b

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Input · per 1M tokens
276,975 toman
Output · per 1M tokens
553,951 toman
One 1,000-word request ≈
1,080 toman

You are billed for the usage the request actually reported. Prices follow the market.Pricing and top-ups

Aion-RP 1.0 (8B) example: translation between Persian and English

The example is picked from this model's own capabilities. Drop in your key and it runs as is.

from openai import OpenAI

client = OpenAI(base_url="https://api.uttapen.ir/v1", api_key="sk-up-…")

stream = client.chat.completions.create(
    model="aion-labs/aion-rp-llama-3.1-8b",
    messages=[{"role": "user", "content": "Translate into fluent Persian: \"Your order is confirmed and ships within 48 hours.\""}],
    stream=True,
)
for chunk in stream:
    print(chunk.choices[0].delta.content or "", end="", flush=True)
import OpenAI from "openai";

const client = new OpenAI({ baseURL: "https://api.uttapen.ir/v1", apiKey: "sk-up-…" });

const stream = await client.chat.completions.create({
  model: "aion-labs/aion-rp-llama-3.1-8b",
  messages: [{ role: "user", content: "Translate into fluent Persian: \"Your order is confirmed and ships within 48 hours.\"" }],
  stream: true,
});
for await (const chunk of stream) process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
curl https://api.uttapen.ir/v1/chat/completions \
  -H "Authorization: Bearer sk-up-…" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "aion-labs/aion-rp-llama-3.1-8b",
    "messages": [{"role": "user", "content": "Translate into fluent Persian: \"Your order is confirmed and ships within 48 hours.\""}],
    "stream": true
  }'

What is Aion-RP 1.0 (8B) good for?

Aion-RP 1.0 (8B) comes from Aion Labs; in uttapen you reach it with the model id "aion-labs/aion-rp-llama-3.1-8b". It accepts up to 32,768 tokens of input per call, so a long document or several source files fit in a single request. A single response can run to 29,491 tokens. On price it sits in the "cheap" band — cheaper than 209 and dearer than 187 of the other paid models in the catalogue.

Aion-RP 1.0 (8B) is text in, text out: no tool calling, no image input. For chat, rewriting, translation and summarising that is all you need, and it costs less than a model carrying features you never call.

For a back-of-envelope figure: about 1,080 toman per 1,000-word exchange (276,975 in, 553,951 out, per 1M tokens). You are always charged for the usage the request actually reported, never for the estimate, and a failed request costs nothing.

The closest alternative with the same capabilities from a different provider is Morph V3 Large: Aion-RP 1.0 (8B) works out about 17% cheaper, and its context window is smaller. Both run on the same key and the same code, so trying the other one is a single string change.

To make the figure concrete: 100,000 toman of credit buys roughly 93 thousand-word requests on Aion-RP 1.0 (8B), and every 1,000 toman is about 926 words of round trip. A job with one million input tokens and one million output tokens comes to 830,926 toman in total. Filling this model's 32,768-token window costs 9,076 toman on the input side alone, which is the real reason to keep conversation history short.

Aion Labs has 6 models in our catalogue; the cheapest is Aion-3.0-Mini at 945 toman per thousand words and the dearest Aion 3.5 at 4,051. It does not support include_reasoning, reasoning, response_format, tool_choice, which most models here do, so test before switching if your code relies on them. By context size the nearest option from another provider is Magnum v4 72B at 32,768 tokens.

What to use it for: high-volume work such as classification, tagging and bulk summarising.

Provider's own description

Aion-RP-Llama-3.1-8B ranks the highest in the character evaluation portion of the RPBench-Auto benchmark, a roleplaying-specific variant of Arena-Hard-Auto, where LLMs evaluate each other’s responses. It is a fine-tuned base model...

Three real jobs, priced on this model

Each figure is derived from the prices above and moves when they do.

JobTokensCost
One chat turn with a medium history1,500 in + 400 out637 toman
Summarising a ten-page document4,000 in + 600 out1,440 toman
Classifying a thousand short rows120,000 in + 20,000 out44,316 toman

Frequently asked

How do I call Aion-RP 1.0 (8B) from Iran?
Sign up with your mobile number, top the wallet up in toman, create an API key, then in the official OpenAI SDK point base_url at https://api.uttapen.ir/v1 and set model to "aion-labs/aion-rp-llama-3.1-8b". Nothing else in your code changes.
What does Aion-RP 1.0 (8B) cost in toman?
276,975 toman per 1M input tokens and 553,951 toman per 1M output tokens; a 1,000-word request is around 1,080 toman. You pay for the usage that request actually reported, and a failed request costs nothing.
How much input does Aion-RP 1.0 (8B) take?
Up to 32,768 tokens per request, roughly 25k words. A single answer can reach 29,491 tokens.
Can I stream Aion-RP 1.0 (8B)'s output?
Yes — with stream=true you get SSE events as the tokens are produced. This model has no tool calling and no image input, so pick a different one if you need either.