OpenAI Unveils GPT-5-Codex: Powerful AI Coding Assistant with Dynamic Thinking

Sep 16, 2025
TechCrunch
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Summary

OpenAI unveils GPT-5-Codex, a powerful AI coding assistant with dynamic thinking capabilities, outperforming previous models in agentic coding and code refactoring, while dynamically allocating 'thinking' time from seconds to hours on coding tasks.

Key Points

  • OpenAI announces GPT-5-Codex, a new version of GPT-5 for its AI coding agent Codex
  • GPT-5-Codex spends its 'thinking' time more dynamically and can take anywhere from seconds to seven hours on a coding task
  • GPT-5-Codex outperforms previous models on agentic coding and code refactoring benchmarks, submitting fewer incorrect comments in code reviews

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