Taking Antigravity for a spin

Been using Claude Code as my daily driver for a few days now, so when Google’s Antigravity CLI showed up I figured it was worth a proper look rather than just reading the launch blog post. Ran it side by side with Claude Code on the same kind of day-to-day work — repo exploration, small fixes, the usual — to see how the two actually compare in practice rather than on paper.

A Hugo repo hadn’t been looked at properly in a while

This blog is just Hugo content and a vendored theme — no app code, nothing exciting — which is exactly the kind of repo that quietly accumulates small rot nobody notices because nothing ever actually breaks the build. Spent a session pointing Claude Code at it to find and fix that rot.

Started with a straight status check: a couple of generated CSS cache files showing as deleted (build artifacts that shouldn’t have been tracked in the first place) and a stray uncommitted edit sitting inside the ananke theme submodule from as far back as November 2024. Both restored/reverted to get back to a clean tree before touching anything else.

Vibe coding a Mandelbrot renderer

Spent today “vibe coding” with Claude, just describing what I wanted and letting it drive, to see how far that gets you on a small self-contained project. The result is fractalPy, a small Numba-accelerated Mandelbrot set renderer.

It started as a single script — render the set to a PNG, colour it, done — using @njit(parallel=True, fastmath=True, cache=True) to JIT-compile the escape-time kernel so it’s fast enough to iterate on interactively: