AionLabs: Aion-2.0

Aion-2.0 is a text-only model from AionLabs with a 131,072-token context window and a 32,768-token output ceiling. It supports reasoning workflows but does not support tool use or structured output, which limits its fit for agentic pipelines or applications that require schema-constrained responses. At $0.80 per million input tokens and $1.60 per million output tokens, the pricing sits in a competitive mid-range tier, but there is currently no independent benchmark coverage to validate where its reasoning quality actually lands. Buyers who prioritize long-context reasoning on text tasks and want a mid-range price point may find it worth testing, but the absence of benchmark data means any performance claims are unverified. Organizations with strict evaluation requirements should treat this model as unproven until third-party coverage becomes available.