Claude Opus 4.6 vs. GPT 5.4: A C#/.NET Developer's Comparison of AI Coding Assistants
By
Mo
Hand-rolled, kettle-boiled, baked to perfection. Worth every minute at the bakery.
Summary
A senior C#/.NET developer shares their hands-on comparison of Claude Opus 4.6 and GPT 5.4 as AI coding companions. The article evaluates both LLMs on their ability to assist with debugging, architecture decisions, and code generation specifically within the .NET ecosystem. The author argues that while both tools are significant productivity boosters, they have different strengths depending on the task at hand.
Key quotes
· 3 pulledAs a senior engineer who's spent more years than I care to admit wrangling C# and .NET, I've seen my fair share of 'game-changing' tech.
Most of it is just hype. But these new-gen LLMs? They're different.
We're talking about legitimate productivity boosters, especially when you're staring down a tricky bug or architecture decisions.
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