Aion-2.0

AionLabs· released 23 Feb 2026

aion-labs/aion-2.0

Input / 1M tokens: $0.8
Output / 1M tokens: $1.6

Context window131K tokens

Longest answer: 33K tokens

reads texttool callingreasoning

About

Aion-2.0 is a text model from AionLabs, identified as a variant of DeepSeek V3.2 tuned for immersive roleplaying and storytelling. Its stated strength is adding tension, crises and conflict to narratives. The model accepts text and produces text, with tool support and reasoning enabled. It has a 131,072-token context window and a maximum output of 32,768 tokens. Pricing is $0.8 USD per 1 million input tokens and $1.6 USD per 1 million output tokens. The model ID is aion-labs/aion-2.0, and its listed release date is February 23, 2026. For builders, its text-only inputs and outputs define the listed interaction format, while the context and output limits set the bounds for a prompt and response. Tool support is also listed for workflows that use tools alongside model reasoning.

Who it is for

Aion-2.0 is suited to builders creating text-based storytelling or roleplaying experiences that benefit from narrative tension and conflict. Its tool support and reasoning may also fit text workflows that use those capabilities.