OpenAI Codex Helps Proaction Boost Sales 60% and Save 75+ Hours of Work

OpenAI published a case study showing that Proaction, a sales-focused company, used Codex to automate workflows that resulted in a 60% increase in sales and over 75 hours of weekly time savings. The case study highlights Codex being used not just for raw code generation but for end-to-end business process automation, including tasks that previously required significant manual effort. For developers evaluating AI coding assistants and agentic automation tools, this provides concrete ROI benchmarks in a sales and operations context. It also reinforces OpenAI's push to position Codex as an enterprise automation layer, not just a developer tool. Teams building internal automation workflows should consider how Codex-style agentic coding assistants can be integrated into non-engineering business functions.