There's no reason for software to be slow anymore

	There's no reason for software to be slow anymore(danluu.com)
	650 points by Jach 53 days ago \| 489 comments
	tl;dr: LLM coding agents have drastically reduced the cost of performance optimization work that previously required rare expertise, making it feasible to apply techniques like JIT compilers, custom indexes, and workload-specific tuning to far more projects. The author demonstrates this by having agents add AOT compilation to a regex engine and build a world-class Azul game AI on a laptop in minimal human time, both with meaningful speedups. The implication: workload-specific "dynamic custom software" fitted to individual users or customers is becoming practical, and slow software is increasingly a choice rather than a constraint.
	HN Discussion: ↓Software slowness is caused by network latency and web architecture, not optimization opportunities LLMs can address ~LLM-driven optimization is just superoptimization rebranded, and LLMs still produce slow code in practice ↑Agentic coding is genuinely well-suited to performance optimization work, confirming the article's thesis ↓LLM-generated code is verbose, bloated, and slower than ever, contradicting the article's optimism ↓Modern software has regressed in speed due to careless coding and framework bloat, regardless of LLM capabilities