Diagram of a mixed-precision training loop with gradient checkpointing for a mini GPT.

Build a Mini GPT From Scratch: A Mixed-Precision Training Loop That Actually Impresses

Ship a portfolio project that signals real systems skill: a custom autograd engine, mixed-precision training, gradient checkpointing, and AdamW, all wired into a mini GPT you can actually run.

September 7, 2026 · 12 min · 2430 words · martinuke0
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