Mitchell Hashimoto on why the best AI writes like a person, not a tool

Mitchell Hashimoto — the guy who built Vagrant, Consul, and Terraform — sat down with Alex Alejandre and gave the kind of long-form answer you don't get from a press release. The core insight: the best AI writing sounds like a person, not a machine. The worst sounds like it's trying to convince you it's smart.

Mitchell says the real test is reading a paragraph blind and not knowing whether a human wrote it. If you do, it's good. If it reads like a well-organized list pretending to be prose, it's bad. He's been working on this for years — it's one reason he's been quietly building his own models instead of riding the OpenAPI bandwagon.

What makes this worth reading: Mitchell is the kind of engineer who actually cares about how things feel, not just how they work. His take on writing is the same as his take on interfaces — the details you don't notice are the ones that matter.

Why this matters for us: the best AI writing doesn't announce itself. It just sounds like someone who knows what they're talking about — the same way our own writing should.