OpenAI enterprise AI sales chief Barret Zoph leaves after five months

OpenAI lost its enterprise AI sales chief after only five months, a sharp departure at a moment when the company is pressing harder into business contracts and promising corporate customers more security, governance and auditability. Barret Zoph’s exit lands as OpenAI says enterprise already makes up more than 40% of revenue and is on track to match consumer revenue by the end of 2026.

Zoph had returned to OpenAI in mid-January after serving as co-founder and chief technology officer of Thinking Machines Lab, the startup founded by former OpenAI chief technology officer Mira Murati in February 2025. Thinking Machines says it is building AI systems that are more widely understood, customizable and capable, and the company has kept building momentum even as senior talent has moved around the industry.

That momentum has been visible in product and infrastructure bets. On May 11, 2026, Thinking Machines announced a research preview of its interaction models, which it says continuously take in audio, video and text and respond in real time. In March 2026, the company also announced a long-term strategic partnership with NVIDIA for at least one gigawatt of next-generation NVIDIA Vera Rubin systems. Those moves show how quickly the competition for frontier AI talent and enterprise attention is shifting, with rival labs racing to prove they can deliver both technical ambition and business readiness.

For OpenAI, the timing makes Zoph’s departure especially consequential. The company said Codex had reached 3 million weekly active users and that its APIs process more than 15 billion tokens per minute, evidence of growing demand across developer and business products. OpenAI also said on March 31, 2026, that it had raised $122 billion in committed capital at an $852 billion post-money valuation to expand frontier AI and meet demand from ChatGPT, Codex and enterprise AI. Its Frontier platform is being marketed as an enterprise AI agent system built for secure production deployment with enterprise-grade governance and auditability.

That is the kind of market where leadership stability matters. Enterprise sales depends on sustained relationships, clear account ownership and confidence that product promises will outlast personnel changes. Repeated turnover at the top can complicate those handoffs just as buyers are deciding which AI vendor to trust for sensitive workflows, and OpenAI’s next phase in enterprise now has to be sold with both technical scale and organizational continuity.