Flax (JAX Neural Networks)

Master Flax: the most popular JAX neural network library. Learn nnx (new) and linen (old) APIs, training loops, and porting PyTorch models to Flax.

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6

Lessons

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Code Examples

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Lessons in This Topic

Work through these 6 lessons in order, or jump to whichever topic you need most.

Flax Overview

Beginner

Flax NNX (New API)

Intermediate

Flax Linen (Legacy API)

Intermediate

Training Loops with Flax

Intermediate

Checkpointing in Flax

Advanced

Porting PyTorch to Flax

Advanced