Comment by peterbell_nyc | Hacker News Reader

Comment by peterbell_nyc | Hacker News Reader

For me the distinction is the quality and rigor of your pipeline.

Vibe coding: one shot or few shot, smoke test the output, use it until it breaks (or doesn't). Ideal for lightweight PoC and low stakes individual, family or small team apps.

Agentic engineering: - You care about a larger subset of concerns such as functional correctness, performance, infrastructure, resilience/availability, scalability and maintainability. - You have a multi-step pipeline for managing the flow of work - Stages might be project intake, project selection, project specification, epic decomposition, d=story decomposition, coding, documentation and deployment. - Each stage will have some combination of deterministic quality gates (tests must pass, performance must hit a benchmark) and adversarial reviews (business value of proposed project, comprehensiveness of spec, elegance of code, rigor and simplicity of ubiquitous language, etc)

And it's a slider. Sometimes I throw a ticket into my system because I don't want to have to do an interview and burn tokens on three rounds of adversarial reviews, estimating potential value and then detailed specification and adversarial reviews just to ship a feature.

If your slider only goes between vibe coding or agentic engineering you're missing an entire range of engineering where the human is more involved.

I've been using Opus, GPT-5.5, and some lesser models on a daily basis, but not having them handle entire tasks for me. Even when I go to significant effort to define and refine specs, they still do a lot of dumb things that I wouldn't allow through human PR review.

It would be really easy to just let it all slide into the codebase if I trusted their output or had built some big agentic pipeline that gave me a false sense of security.

Maybe 10 years from now the situation will be improved, but at the current point in time I think vibe coding and these agentic engineering pipelines are just variations of a same theme of abdicating entirely to the LLM.

This morning I was working on a single file where I thought I could have Opus on Max handle some changes. It was making mistakes or missing things on almost every turn that I had to correct. The code it was proposing would have mostly worked, but was too complicated and regressed some obvious simplifications that I had already coded by hand. Multiply this across thousands of agentic commits and codebases get really bad.

Next time give it the context required for the task, eg an explanation of why you have those hand coded simplifications, and be amazed at how proper use of a tool works better than just assuming your drill knows what size bit to pick.

I agree, vibe coding does not have quality gate checks at each stage, while agentic engineering does. Dev teams get into trouble when they try build to build without a proper process of design, tests, and reviews. This was true before agentic coding, but it's especially true now. The teams that understand how to leverage agents in this process are the ones that will be most successful.

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