India, Sept. 16 -- OpenAI has introduced GPT-5 Codex, a version of GPT-5 designed specifically for software development. The model has been trained on complex engineering tasks such as building applications, adding features, debugging, large-scale refactoring, and conducting code reviews.

GPT-5 Codex is now the default model for cloud tasks and code reviews in Codex, with developers able to choose it for local use through the Codex CLI and IDE extension. The model adapts to the complexity of the task, providing faster responses for smaller requests and extended reasoning for larger assignments. In testing, it has independently worked on tasks for more than seven hours, fixing test failures and delivering working implementations.

OpenAI ...