I agree, it wrote an entire NES emulator for me. https://news.ycombinator.com/item?id=46443767
It cloned one of the many open source ones available is what you mean.
Opus 4.5 is not the normal AI agent experience that I have had thus far
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Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#42The problem with this is none of this is production quality. You haven’t done edge case testing for user mistakes, a security audit, or even just maintainability. Yes opus 4.5 seems great but most of the time it tries to vastly over complicate a solution. Its answer will be 10x harder to maintain and debug than the simpler solution a human would have created by thinking about the constraints of keeping code working.
It's not from a few prompts, you're right. But if you layer on some follow-up prompts to add proper test suits, run some QA, etc... then the quality gets better. I predict in 2026 we're going to see agents get better at running their own QA, and also get better at not just disabling failing tests. We'll continue to see advancements that will improve quality.
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#43Earlier quoted context omitted.
This has always been my problem whether it's Gemini, openai or Claude. Unless you hand-hold it to an extreme degree, it is going to build a mountain next to a molehill. It may end up working, but the thing is going to convolute apis and abstractions and mix patterns basically everywhere
Not in my experience - you need to build the fact that you don’t want it to do that into your design and specification.
I can't teach it taste.
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#44Most software engineers are seriously sleeping on how good LLM agents are right now, especially something like Claude Code. Once you’ve got Claude Code set up, you can point it at your codebase, have it learn your conventions, pull in best practices, and refine everything until it’s basically operating like a super-powered teammate. The real unlock is building a solid set of reusable “skills” plus a few agents for th…
codex cli even has a skill to create skills; it's super easy to get up to speed with them
https://github.com/openai/skills/blob/main/skills/.system/sk...
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#45Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#46Oh another run of new small apps. Why not unleash this oh so powerful tools not on a jira ticket written two years ago, targeting 3 different repos in an old legacy moloch, like actual work? It's always just the "Fibonacci" equivalent
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#47Me and Opus have a lot in common. We both hit our weekly limit on Monday at 10am.
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#48Most software engineers are seriously sleeping on how good LLM agents are right now, especially something like Claude Code. Once you’ve got Claude Code set up, you can point it at your codebase, have it learn your conventions, pull in best practices, and refine everything until it’s basically operating like a super-powered teammate. The real unlock is building a solid set of reusable “skills” plus a few agents for th…
Mind sharing the bill for all that?
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#49Most software engineers are seriously sleeping on how good LLM agents are right now, especially something like Claude Code. Once you’ve got Claude Code set up, you can point it at your codebase, have it learn your conventions, pull in best practices, and refine everything until it’s basically operating like a super-powered teammate. The real unlock is building a solid set of reusable “skills” plus a few agents for th…
Mind sharing the bill for all that?
Re: Opus 4.5 is not the normal AI agent experience that I have had thus far
#50https://burkeholland.github.io/posts/opus-4-5-change-everyth...
Read this article and ultrathink critically about it. Provide your perspective.
The article makes a strong experiential case for improved velocity in AI-assisted development but contains several argumentation weaknesses and conflations worth examining.
The projects described are legitimately non-trivial: Firebase backend integration, Facebook OAuth, iOS apps in Swift (a language the author doesn't know), GitHub Actions pipelines, scheduled cloud functions. Getting these working in hours rather than weeks represents a real capability shift. The author is honest about his limitations and uncertainties, particularly the security concerns.
Where the argument breaks down:
1. "Replace developers" vs "dramatically augment developers" The author's own workflow contradicts the headline claim. He's still:
Making architectural decisions (choosing Firebase) Handling errors Opus couldn't see (XAML via Visual Studio) Writing custom prompts to shape output quality Manually auditing security Making product and UX decisions
This is developer work. The tool changed; the role didn't disappear.
2. The 80% security confidence undermines his thesis He admits he's shipping apps with "80% confidence" in security and calls it "too damn low." This is the crux: the AI accelerated production but didn't replace the judgment required to responsibly ship production software. The velocity gain exposed a competence gap rather than closing it.
3. Sample bias in project selection
All examples are:
Greenfield (no existing codebase) Single developer Personal/family use Standard patterns with excellent documentation (Firebase, SwiftUI, React Native) No regulatory, compliance, or scale requirements No team collaboration or handoff considerations
These constraints define a specific problem space where AI excels. Extrapolating to "developers are replaceable" ignores the majority of professional software work.
4. "Code doesn't need human readability" is underbaked His argument is circular: "Why optimize for human readability when the AI is doing all the work?" But:
His 80% security confidence exists because he can't read the code He had to use external tools (VS) when Opus couldn't diagnose errors What happens when context windows are exceeded and the LLM loses track? Model behavior changes between versions; human-readable code is version-agnostic
The custom prompt he shares actually encodes many good engineering practices (minimal coupling, explicit state, linear control flow) that benefit LLMs and humans. The "no comments needed" claim conflates what's optimal for LLM regeneration with what's optimal for debugging production issues at 3am. What's actually being demonstrated
The honest version of this article would be: Opus 4.5 dramatically compresses the gap between "can write code" and "can ship a personal app" for a specific class of greenfield projects. That's genuinely transformative for hobbyists, indie developers, and people solving their own problems. But that's different from "replacing developers." The article demonstrates a power tool; power tools don't eliminate tradespeople.