Tiny 3B model rivals 30B giants on math and coding benchmarks
VibeThinker-3B, a 3‑billion‑parameter model from Weibo AI, reaches frontier reasoning scores on AIME‑26 (94.3) and LiveCodeBench (80.2), rivaling 30‑plus‑billion‑parameter flagships. The technical report credits a Spectrum‑to‑Signal post‑training pipeline and introduces a Parametric Compression‑Coverage hypothesis, arguing that verifiable reasoning can be compressed into tiny cores.