Opus 5 was incredible on day one. Now it’s nearly unusable, hallucinating and failing repeatedly.
The pattern is obvious. Anthropic launches models at full strength, then quantizes them later to cut costs and push users toward Fable 5 and higher spending.
Opus 5 is insanely good at building @expo apps.
Here's @pooool app, rebuilt fully in expo. Everything is real native UI
There hasn't been a better time to build apps.
Fable just found a 15-30% memory efficiency improvement in Turbopack / Next.js, nearly autonomously.
@tobi asked me today: what have been your “holy s***” moments with AI?
My answer was: it’s every single week. And it’s accelerating. In fact, “WTFs/day” might just be my favorite metric for AI progress.
It’s one thing to read benchmarks or stories online. It’s another to watch these machines pull engineering feats every day.
3 days ago? Sol helped us find novel vulnerabilities in some of the most audited code in the world. Today? Fable helps us ship this large optimization of a very complex Rust codebase. I just saw some results of work we’ve done to shrink binaries by 10-20x. List goes on.