OpenAI wants its AI deep inside corporate America. On Tuesday, the company expanded ties with global systems integrators including Accenture, Capgemini, CGI, Cognizant, Infosys, PwC and Tata Consultancy Services. The goal? Speed Codex adoption in large companies’ software development operations. Weekly usage has surged past 4 million developers, up from 3 million earlier this month. Codex automates code writing, reviewing, reasoning. Big firms need help embedding it. OpenAI launched Codex Labs too. Specialists embed directly in customer sites for integration. Competition bites hard. Anthropic’s Claude gains on coding, reasoning. Microsoft, Google, Amazon pour billions into business AI. But this builds on a pattern. Back in February, OpenAI inked multiyear “Frontier Alliances” with McKinsey & Co., Boston Consulting Group, Accenture and Capgemini. Frontier serves as an intelligence layer stitching disparate enterprise systems and data.…