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AI Summary
- OpenAI's GPT-5-Codex is specialized agentic model for software engineering featuring 'variable grit' that dynamically adjusts reasoning time from quick tasks to complex refactoring over up to seven hours
- Multiple interfaces include Command Line Interface (CLI), IDE extensions, and Cloud version, excelling at autonomous development workflows and thorough code reviews
- Developers report Codex surpasses competitors like Claude Code on complex long-running tasks, though some users note erratic behavior requiring human guidance in certain scenarios