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Aion 3.5 Mini

AionLabs · released 23 Sept 2026

Input$0.7per 1M tokens
Output$1.4per 1M tokens
Context262Ktokens
WeightsClosed
context on a 1K–2M scale

About

Aion 3.5 Mini is a text-output model from AionLabs for roleplaying and storytelling, built on the GLM family of models. It accepts text input and supports reasoning and tools. The model has a 262,144-token context window and a maximum output of 32,768 tokens. Listed pricing is $0.7 USD per 1 million input tokens and $1.4 USD per 1 million output tokens. Its model identifier is aion-labs/aion-3.5-mini. Aion 3.5 Mini is described as the smaller, lower-cost sibling of Aion 3.5. The listed release and creation date is September 23, 2026. Its official site is OpenRouter's page for the model. These specifications position it for text-based roleplaying and storytelling tasks that may benefit from a large context window, while the listed reasoning and tool support provide additional capabilities. The facts do not specify a licence or further deployment details.

Who it is for

Aion 3.5 Mini suits developers building text-based roleplaying or storytelling applications who need a large context window. It may also fit use cases that need reasoning or tools.

What is good

  • 262,144-token context window.
  • Supports reasoning and tools.
  • Maximum output is 32,768 tokens.
  • Text input and output.

What to know first

  • Input costs $0.7 USD per 1 million tokens.
  • Output costs $1.4 USD per 1 million tokens.
  • Licence is not specified.

Verdict

Aion 3.5 Mini is a text model focused on roleplaying and storytelling, with a large context window and listed reasoning and tool support. Its input and output prices are stated separately; licence details are not provided.

Details

Lab
AionLabsopenrouter.ai · 3 Oct 2026
Context
262Kopenrouter.ai · 3 Oct 2026
Input price
$0.7 / 1Mopenrouter.ai · 3 Oct 2026
Output price
$1.4 / 1Mopenrouter.ai · 3 Oct 2026
Max output
32,768 tokensopenrouter.ai · 3 Oct 2026
Inputs
textopenrouter.ai · 3 Oct 2026
Open weights
Noopenrouter.ai · 3 Oct 2026

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Listed on Inferse

Sources