OpenAI has launched a plugin system for its AI programming assistant, Codex. The update allows developers to build custom workflows and connect the tool to external services.

The release follows a similar feature introduced by rival Anthropic for its Claude Code tool five months ago. OpenAI’s architecture supports cross-compatibility, enabling users to migrate plugins from competing ecosystems.

The new system transforms Codex into a broader work platform for software teams. This move intensifies the competition between OpenAI and Anthropic for the AI developer tool market.