Aion 3.5 Mini

• 🎭 Multi-model roleplay and storytelling system
• 📏 262K token context window
• 🧩 Specialized models collaborate on each response
• 🔧 Tool calling plus reasoning and web search
• 🎨 Handles mature and darker themes with nuance
• ⚡ Lighter, lower-cost tier of the Aion 3.5 line

Aion Labs

Aion Labs is an Israeli venture studio working at the intersection of artificial intelligence and pharmaceutical research. The group focuses on applying machine learning to drug discovery and development, partnering with scientific and industry collaborators…

Aion 3.5 Mini is AionLabs' compact entry in its interactive-fiction lineup, built on the GLM family and released in September 2026 alongside the full-size Aion 3.5. Rather than a single monolithic model, it operates as an orchestrated system in which several specialized components collaborate on each response — one shaping narrative structure, others sharpening tension and conflict — which lets the Mini tier reach for stronger storytelling than its cost class would normally allow.

Within AionLabs' catalogue, the Mini branch is the efficiency-oriented counterpart to the full Aion releases, following on from Aion 3.0 Mini and the larger Aion 3.0. A 262K-token context window gives it enough room to hold long-running scenes, character sheets, and accumulated world state, while reasoning, function calling, and web search let it drive dynamic, tool-backed fiction rather than plain prose completion.

It is designed to handle mature and darker themes with nuance instead of deflection, making it well suited to extended roleplay sessions, collaborative fiction, character-driven chat applications, and game or narrative engines where plot momentum and conflict matter more than encyclopedic factual recall.