GPT-5-Codex is OpenAI’s new, engineering-focused variant of GPT-5, tuned specifically for agentic software engineering inside the Codex product family. It’s designed to take on large real-world engineering workflows: creating full projects from scratch, adding features and tests, debugging, refactors, and performing code reviews while interacting with external tools and test suites. This release represents a […]
Is it OpenAI’s latest GPT-5-Codex the strongest AI coding?
September 15, 2025. OpenAI unveiled GPT-5-Codex, a specialized variant of GPT-5 optimized for agentic software engineering inside its Codex product. The company says the model can operate autonomously on large, complex engineering tasks for more than seven hours at a stretch, iterating on implementations, fixing failing tests, and delivering completed work with reduced human intervention. […]