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OmniEdu: Open Foundation Models for Learning and Teachingarxiv.org

OmniEdu is an open family of LLMs (4B‑27B) fine‑tuned on a curated, capability‑balanced educational corpus (≈70k examples, 16M tokens) covering subject competence, curriculum grounding, diagnostic reasoning, and pedagogical scaffolding. Across model scales it improves on K‑12 benchmarks (K12‑Bench EM 63.12 %/F1 76.69 %, MathFish 85.89 %, EDUMATH 86.95 %, MathTutorBench Scaffold 78.74 %) and achie…