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While OpenAI's GPT models have made significant technical leaps, many developers still prefer Anthropic's Claude for real-world coding tasks. Claude is favored for its superior contextual understanding, intuitive code collaboration, and consistent outputs [1]. Additionally, Claude-based tools like Claude Code and Claude 3.5 Sonnet have become mainstream choices for software development [4]. On the other hand, OpenAI offers powerful capabilities through its GPT and reasoning models. The release of GPT 5.4 brings major improvements to the Codex ecosystem, enhancing complex code generation and autonomous agent tasks [1]. OpenAI has also introduced reasoning models like o3-mini, which excel at logical reasoning, as well as the open-source Codex CLI terminal tool to compete directly with Claude Code [3, 4]. Rather than choosing just one, experts suggest combining their strengths. Developers are advised to use OpenAI's reasoning models (such as o3-mini) to tackle complex software architecture and bugs, while utilizing AI agents to automate repetitive coding workflows [4].