> ## Documentation Index
> Fetch the complete documentation index at: https://veniceai-feat-models-redesign.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Aion 3.5 API
> Aion 3.5 API on Venice: 256K context, $3.75 input and $7.50 output per 1M tokens. Anonymized access without your identity. Pricing, specs and code examples.
export const HubMount = ({view, children, ...props}) => {
const [hub, setHub] = useState(null);
const [failed, setFailed] = useState(false);
useEffect(() => {
let alive = true;
const w = window;
if (!w.__veniceModelHub) {
const urls = w.location.hostname === 'localhost' ? ['http://localhost:3333/data/model-hub.bundle.json', '/data/model-hub.bundle.json'] : ['/data/model-hub.bundle.json'];
const load = i => fetch(urls[i], {
cache: 'no-cache'
}).then(res => {
if (!res.ok) throw new Error(`bundle ${res.status}`);
return res.json();
}).catch(err => i + 1 < urls.length ? load(i + 1) : Promise.reject(err));
const Frag = <>.type;
const h = (type, props, ...kids) => {
const T = type;
const {key, ...rest} = props || ({});
if (!kids.length) return ;
if (kids.length === 1) return {kids[0]};
return {kids.map((kid, i) => {kid})};
};
w.__veniceModelHub = load(0).then(bundle => new Function(`return (${bundle.code})`)()({
h,
Fragment: Frag,
useState,
useEffect,
useRef,
useMemo,
useCallback
}));
}
w.__veniceModelHub.then(instance => {
if (alive) setHub(instance);
}).catch(() => {
w.__veniceModelHub = null;
if (alive) setFailed(true);
});
return () => {
alive = false;
};
}, []);
const View = hub ? hub[view] : null;
if (View) return {children};
if (failed) {
return
The interactive model catalog could not load. The full data is below.
{children}
;
}
return
{children}
;
};
# Aion 3.5 API
Aion 3.5 is a large language model by Aion Labs, available on the Venice API as `aion-labs-aion-3-5`. Requests are anonymized, so the provider never sees your identity.
Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. Multiple specialized models collaborate on each response to produce stronger narrative structure and more compelling tension and conflict. It handles mature and darker themes with nuance and supports tool calling for richer interactive fiction.
## Aion 3.5 API pricing
| Model ID | Variant | Privacy | Price |
| - | - | - | - |
| `aion-labs-aion-3-5` | Standard | Anonymized | $3.75 input / $7.50 output per 1M tokens |
## Aion 3.5 specifications
| Spec | Value |
| - | - |
| Provider | Aion Labs |
| Released | Sep 23, 2026 |
| Privacy | Anonymized |
| Context window | 256K tokens |
| Max output | 32K tokens |
| Reasoning effort | Not adjustable |
## How to use the Aion 3.5 API
Send requests to `POST https://api.venice.ai/api/v1/chat/completions` with `"model": "aion-labs-aion-3-5"` and your API key.
```bash theme={null}
curl https://api.venice.ai/api/v1/chat/completions \
-H "Authorization: Bearer $VENICE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "aion-labs-aion-3-5",
"messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }]
}'
```
## Aion 3.5 API FAQ
### How much does the Aion 3.5 API cost?
$3.75 per 1M input tokens and $7.50 per 1M output tokens, with cached input at \$0.94 per 1M. Prices are in USD and can be paid in DIEM at parity.
### What is the Aion 3.5 model ID?
Use `aion-labs-aion-3-5` as the `model` parameter.
### Is the Aion 3.5 API private?
Aion 3.5 is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work.
### What is the context window of Aion 3.5?
256K tokens of context, with up to 32K output tokens per response.
### What does Aion 3.5 support?
Aion 3.5 supports function calling, structured outputs, reasoning, web search and prompt caching.
### Which endpoint does the Aion 3.5 API use?
Call `POST /chat/completions`. `/responses` (Alpha) is also supported.
## Related models
* [Aion 3.0 API](/models/aion-3-0): $3.75 input / $7.50 output per 1M tokens
* [GPT-6 Sol API](/models/gpt-6-sol): $2.50 input / $12.50 output per 1M tokens
* [Qwen 3.8 2.4T API](/models/qwen-3-8-2-4t): $2.50 input / $7.50 output per 1M tokens
* [GPT-5.6 Terra API](/models/gpt-5-6-terra): $2.50 input / $15.00 output per 1M tokens
* [GPT-5.6 Terra Pro API](/models/gpt-5-6-terra-pro): $2.50 input / $15.00 output per 1M tokens
This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.