Marius Vach Blog

Jev is the AI moment of 2026 for me.

Let's see how we can optimize basically any Python program using GEPA's new `optimize_anything` API

We design the machines.

How tinygrad helped me finally understand what Sutton meant

Let's look at what DSPy offers for AI engineers besides prompt optimization...

Let's look at how self-reflective prompt optimization works...

Let's look at how some of the basic DSPy optimizers work...

How to systematically improve your LLM apps through analyzing its errors...

How to make BM25-based search more robust...

Let's look at how to secure your FastHTML routes against CSRF attacks.

Let's look at how to implement a simple task system in FastHTML

Why I think reasoning models are a huge step forward...

How to use Modal.com to run ColBERTv2 through the ragatouille library

How to use decorators to elegantly define layouts in FastHTML

Let's implement social logins in FastHTML

Let's implement a passwordless authentication system using magic links.

Authentication doesn't have to be scary or complicated.