1d ago

Vaibhav Srivastav volunteers for a 2-3 hour livecoding workshop building a roughly 10-million-parameter transformer from scratch using JAX, Flax, and Optax in free Colab with TPU access

Idea originated in post on exercises for frontier AI labs.

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Original post
OPVaibhav (VB) Srivastav#1853Vaibhav (VB) Srivastav@REACH_VB

@swyx yea, hold my codex

2:00 PM · May 18, 2026 View on X
QUOTE POSTVaibhav (VB) Srivastav#1853Vaibhav (VB) Srivastav@REACH_VB

hold my codex

swyx🛬 SFOswyx🛬 SFO@swyx

this seems quite doable in the space of a single 2-3 hour workshop — any brave soul want to try to livecode this for people as a learning exercise?

8:53 PM · May 18, 2026 · 94.6K Views
9:46 PM · May 18, 2026 · 16.4K Views
REPLYVaibhav (VB) Srivastav#1853Vaibhav (VB) Srivastav@REACH_VB

keeping up with codex on phone!!

Vaibhav (VB) SrivastavVaibhav (VB) Srivastav@reach_vb

hold my codex

9:46 PM · May 18, 2026 · 16.4K Views
10:21 PM · May 18, 2026 · 1.7K Views