Is Opus 4.5 really ‘the best model in the world for coding’? It just failed half my tests

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ZDNET’s key takeaways

• Opus 4.5 failed half my coding tests, despite bold claims
• File handling glitches made basic plugin testing nearly impossible
• Two tests passed, but reliability issues still dominate the story

I’ve got to tell you: I’ve had fairly okay coding results with Claude’s lower-end Sonnet AI model. But for whatever reason, its high-end Opus model has never done well on my tests.

Usually, you expect the…