AionLabs, unknown

# Aion 3.5

> Aion 3.5 by AionLabs. 1 published benchmark result. API: $3 in / $6 out per M tokens. 262K context. Scores, sources and comparisons.
- Canonical page: https://noometry.com/models/aion-3-5
- Last updated: 2026-10-10
- Title: Aion 3.5 Benchmarks, Price & Rank (October 2026) | Noometry

Aion 3.5 by AionLabs has 1 published benchmark result on Noometry, not yet enough to be ranked. API pricing starts at $3 per million input tokens and $6 per million output tokens, with a 262K-token context window.

Last verified October 10, 2026

## Specifications

- **Noometry rank:** Unranked
- **Index score:** Not ranked
- **Evidence:** Sparse 1 results
- **Provider:** [AionLabs](https://noometry.com/providers/aion-labs)
- **Released:** Unknown
- **Weights:** Unknown
- **Reasoning:** Yes
- **Context window:** 262K
- **Max output:** 33K
- **Input price:** $3 / M
- **Output price:** $6 / M
- **Blended price:** $3.75 / M
- **Output speed:** Not measured
- **Value:** Not ranked
- **Knowledge cutoff:** Unknown
- **Input:** text

## Category scores

Each category score combines every public result we have in that category.

Aion 3.5 category scores

1.  Writing & Preference 74.9
2.  74.575.0

Aion 3.5 category ranks
| Category | Score | Rank | Results |
| --- | --- | --- | --- |
| [Writing & Preference](https://noometry.com/best/writing) | 74.9 | — | 1 |

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## Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

### Writing & Preference

Aion 3.5 Writing & Preference benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [EQ-Bench Creative Writing](https://noometry.com/benchmarks/eqbench-creative-writing) | 1929 | #11 of 115, top 10% |  | [EQ-Bench](https://eqbench.com/creative_writing.html) |  |

## API pricing by provider

Aion 3.5 API prices
| Route | Input $/M | Output $/M | Cached input $/M | Checked |
| --- | --- | --- | --- | --- |
| [openrouter](https://openrouter.ai/aion-labs/aion-3.5) | $3 | $6 | $0.75 | 2026-10-10 |

[All AionLabs API prices →](https://noometry.com/llm-pricing/aion-labs) [Estimate your cost →](https://noometry.com/tools/cost-calculator)

## Compare Aion 3.5

-   [Aion 3.5 vs GPT-6 Astra](https://noometry.com/compare/aion-3-5-vs-gpt-6-astra)
-   [Aion 3.5 vs Claude Fable 5.1](https://noometry.com/compare/aion-3-5-vs-claude-fable-5-1)
-   [Aion 3.5 vs Claude Opus 5.5](https://noometry.com/compare/aion-3-5-vs-claude-opus-5-5)
-   [Aion 3.5 vs Claude Opus 5](https://noometry.com/compare/aion-3-5-vs-claude-opus-5)
-   [Aion 3.5 vs Claude Fable 5](https://noometry.com/compare/aion-3-5-vs-claude-fable-5)
-   [Aion 3.5 vs GPT-6.1 Sol](https://noometry.com/compare/aion-3-5-vs-gpt-6-1-sol)
-   [Aion 3.5 vs Gemini 3.8 Flash](https://noometry.com/compare/aion-3-5-vs-gemini-3-8-flash)
-   [Aion 3.5 vs Kimi K3](https://noometry.com/compare/aion-3-5-vs-kimi-k3)
-   [Aion 3.5 vs Grok 4.6](https://noometry.com/compare/aion-3-5-vs-grok-4-6)
-   [Aion 3.5 vs Qwen3.8 Max](https://noometry.com/compare/aion-3-5-vs-qwen3-8-max)
-   [Aion 3.5 vs GLM-5.3](https://noometry.com/compare/aion-3-5-vs-glm-5-3)
-   [Aion 3.5 vs Muse Spark 1.3](https://noometry.com/compare/aion-3-5-vs-muse-spark-1-3)
-   [Aion 3.5 vs DeepSeek V4 Pro](https://noometry.com/compare/aion-3-5-vs-deepseek-v4-pro)
-   [Aion 3.5 vs MiMo-V2.6-Pro](https://noometry.com/compare/aion-3-5-vs-mimo-v2-6-pro)

## Other AionLabs models

-   [Aion-2.0](https://noometry.com/models/aion-2-0)
-   [Aion-3.0](https://noometry.com/models/aion-3-0)
-   [Aion-3.0-Mini](https://noometry.com/models/aion-3-0-mini)
-   [Aion 3.5 Mini](https://noometry.com/models/aion-3-5-mini)
-   [Aion-RP 1.0 (8B)](https://noometry.com/models/aion-rp-1-0)

## Frequently asked questions

### How good is Aion 3.5?

Aion 3.5 by AionLabs has 1 published benchmark result on Noometry, not yet enough to be ranked. API pricing starts at $3 per million input tokens and $6 per million output tokens, with a 262K-token context window.

### How much does Aion 3.5 cost?

Aion 3.5 costs $3 per million input tokens and $6 per million output tokens on openrouter, with cached input at $0.75.

### What is Aion 3.5's context window?

Aion 3.5 accepts up to 262K tokens of input and can write up to 33K tokens in one response.

### Is Aion 3.5 open source?

AionLabs has not published downloadable weights for Aion 3.5 that we can confirm.

### Cite this page

Noometry. (2026). Aion 3.5 benchmarks and pricing. Retrieved October 10, 2026, from https://noometry.com/models/aion-3-5

Quote Noometry with a link back to this page. It is also available in [Markdown](https://noometry.com/md/models/aion-3-5.md).