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Survey: 75% of 138 Developers Prefer Claude Code Over OpenAI Codex

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A poll of 138 software engineers found that three-quarters now use Anthropic's Claude Code as their primary AI coding assistant, compared to just 25% who still prefer OpenAI's Codex. Respondents ranged from junior developers to senior architects working across languages including Python, JavaScript, Java, and Go. Developers cited Claude Code's higher accuracy, longer context retention, and smoother IDE integration as the main reasons for switching. Many noted that Claude-generated code required fewer corrections and produced fewer hallucinated APIs than Codex, saving debugging time. Cost efficiency and lower hallucination rates were also cited as secondary factors influencing the preference.

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