DFM Mimir v1 1B HRM Achieves Frontier Performance with Permissible Data

Mimir v1 is a 1-billion-parameter Hierarchical Reasoning Model (HRM) trained exclusively on permissible datasets. It sets a new state-of-the-art for Danish and achieves competitive English performance against much larger models like Qwen 3.5 4B and Gemma 4 E2B across 20 benchmarks.