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YesClaude · 7 Jan 2026

For me personally, definitely at least 99% all of the Rust code I've committed at work since Opus 4.5 came out has been from an agent running that model

rtfeldman on Hacker News

99% all of the Rust code I've committed at work since Opus 4.5 came out has been from an agent

In the thread “Opus 4.5 is not the normal AI agent experience that I have had thus far”, replying to this comment

Helped: Implementing whole features via English prompts over multiple interactions.

… I'm not talking about "write this function" but rather like implementing the whole feature by writing only English to the agent, over the course of numerous back-and-forth interactions and exhausting multiple 200K-token context windows. For me personally, definitely at least 99% all of the Rust code I've committed at work since Opus 4.5 came out has been from an agent running that model. I'm reading lots of Rust code (that Opus generated) but I'm essentially no longer writing any of it. …