Claude Opus 4.6 vs. GPT-5.3 Codex: How I shipped 93,000 lines of code in 5 days
The speaker evaluates OpenAI's Codex (GPT-5.2/5.3 Codex) and Anthropic's Opus (4.6 and 4.6 fast) for software development tasks, concluding that Opus excels at generative, greenfield feature development and design, while Codex is superior for code review, architectural feedback, and ident
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