November 7, 2025
How to Install Aquif 3.5 Plus & Max Locally – The Open Source Model with GPT-5-Level Reasoning
Aquif 3.5 series marks a defining moment in open-source AI innovation, blending raw reasoning power, massive context windows, and cutting-edge efficiency into a form you can now run locally. Available in two flagship variants, Aquif 3.5 Plus and Aquif 3.5 Max, these models rival frontier systems like Gemini 2.5 Pro, Claude Opus, and GPT-5 mini, while maintaining a suprisingly efficient 3.3B active parameters through their Mixture-of-Experts (MoE) design. Aquif 3.5 Plus offers hybrid reasoning with interchangeable thinking modes, letting you toggle between “speed-first” and “deep-thinking” behavior depending on your workload, whether it’s instant code completion or multi-step scientific reasoning. Meanwhile, Aquif 3.5 Max goes all in with a reasoning-only architecture, designed for advanced mathematics, algorithmic challenges, and large-scale code analysis, pushing an AAII composite score of 60, on par with top-tier commercial frontier models. These models have 1 million token context length, BF16/FP16 precision, and native multilingual support across 10+ languages.