Machine Heart

Jun 17, 2026 · Artificial Intelligence

Can a 3B Model Rival Opus 4.5 in Programming? Inside the Domestic VibeThinker‑3B

VibeThinker‑3B, a 3‑billion‑parameter Chinese‑built model, achieves programming benchmark scores comparable to top‑tier models like Opus 4.5, excelling in AIME, HMMT, LiveCodeBench and LeetCode contests, thanks to its Spectrum‑to‑Signal training pipeline, Claim‑Level reliability evaluation, and multi‑stage SFT and RL refinements.