Astral ships astral-html parser with all code written by GPT-6 in Codex
charliermarsh · x · 2026-10-08
Astral founder Charlie Marsh unveiled astral-html, a high-performance HTML parser designed for document traversal.
The README states it was written by a human, but all code changes, PR summaries, and docs were authored entirely by GPT-6 Astra in Codex.
Highlights: a single runtime dependency (memchr), zero unsafe code, dual Apache-2.0/MIT licensing, and built-in fuzz/differential testing infrastructure.
Marsh argues parsers are uniquely suited for this AI-driven workflow: clear specs, conformance suites, and heavy fuzzability make correctness verifiable — and asks whether the approach should extend to everything.
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