OpenAI Merges Codex Into ChatGPT After Explosive Growth

OpenAI is integrating Codex directly into ChatGPT across all platforms, alongside six new role-specific business plugins targeting teams in sales, investment banking, and beyond. The move follows remarkable adoption figures, with 5 million weekly Codex users recorded in 2026. The merger reflects a broader workplace AI shift, as Codex usage surged 400% since early 2026. The new plugins signal OpenAI's push to embed AI tools deeper into specialized professional workflows across industries.