Aion-1.0

Aion-1.0 is a large language model from AionLabs with a 131k-token context window, released before the company's shift toward multi-model systems.

Strengths

Aion-1.0 excels at reasoning and coding tasks, forming the foundation that Aion-2.0 later expanded with broader language capabilities.

Best for

Mathematical problem-solving, code generation, and logical reasoning workloads where a large context window is valuable.

Limitations

Aion-1.0 has been superseded by Aion-2.0 in AionLabs' lineup, which adds general language strengths while preserving reasoning performance; it predates the company's newer multi-model architectures released in 2026.