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Aion-2.0

Aion LabsReleased Feb 23, 2026

Aion-2.0 is a variant of DeepSeek V3.2 optimized for immersive roleplaying and storytelling. It is particularly strong at introducing tension, crises, and conflict into stories, making narratives feel more engaging....

Try in playground
Context window
131K tokens
Max output
33K tokens
Input
text
Output
text
Tokenizer
Other
Released
Feb 23, 2026
Reasoning
always on

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
Input$0.800$0.024$0.824
Output$1.60$0.048$1.65
Cache read$0.200$0.0060$0.206

Supported parameters

  • include_reasoning
  • max_tokens
  • reasoning
  • temperature
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model aion-labs/aion-2.0.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "aion-labs/aion-2.0",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="aion-labs/aion-2.0",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "aion-labs/aion-2.0",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Aion-2.0 cost via API?
Through OpenKey, Aion-2.0 costs $0.824 per 1M input tokens and $1.65 per 1M output tokens. That is the provider price ($0.800 / $1.60) plus a flat 3% fee — nothing else.
What is Aion-2.0's context window?
Aion-2.0 accepts up to 131K tokens of context and returns up to 33K tokens per request.
Is Aion-2.0 OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "aion-labs/aion-2.0" using any OpenAI SDK — only the base URL and API key change.
What inputs does Aion-2.0 support?
Aion-2.0 accepts text input and produces text output.

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