Tsinghua's Puro-2B Replicates Qwen-Level Model for Under $5090 on a Single RTX 5090

Tsinghua's PACMAN lab released Puro-2B, a fully open-source recipe that trains a Qwen2-1.5B-level 2B model from scratch on a single RTX 5090 for under $5090, using Blockwise FP8, the MuonH optimizer, and curriculum model averaging over 1.4T tokens.

2026-08-31 ~ 2026-08-31 · 4 related posts

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