AI Engineering

Feb 12, 2026 · Artificial Intelligence

MiniMax M2.5: 230B‑Parameter Model Activates 10B, Near Claude Sonnet for One‑Tenth the Cost

MiniMax’s new open‑source M2.5 model, built on a 230 billion‑parameter mixture‑of‑experts architecture that activates only 10 billion parameters per inference, delivers performance comparable to Claude Opus 4.6 across benchmarks, while costing roughly one‑tenth as much, and is already handling a large share of the company’s internal tasks.