OpenAI's 'Reset God' Tibo moves to internal security; Codex vet Ambrosino seen taking over

量子位 · wechat · 2026-11-06

Reuters reports OpenAI's Thibault Sottiaux (Tibo) has shifted to lead an internal systems security project, with CodexApp founding team member Andrew Ambrosino likely inheriting his user-facing role. Users have already flooded Ambrosino's mentions asking for Plus-tier parity, keeping Chat and Work separate, and dropping the five-hour usage cap.

The move ties into OpenAI's effort to fix long-standing operational security gaps: employees had warned about overly broad access to sensitive code, weak internal tool review, and insider threats, and in October an engineer was federally charged for planting listening devices in an executive boardroom. Sources say as early as August, Tibo reassigned about a quarter of OpenAI's production engineers to security infrastructure. Tibo has since announced a new "world-class cybersecurity team."

Handover signals are clear: after doubling usage limits for paid tiers six days ago, Tibo announced his "graduation," while Ambrosino restored the doubled limits, pledged to supervise simplifying and speeding up the ChatGPT app, and told users to send complaints his way. Ambrosino, an engineering-design-product hybrid who ran a fintech startup for seven years, joined OpenAI in 2025 and led the CodexApp team. OpenAI has not officially confirmed the full handover.

Original post →

More from Companies & People

Companies & People channel →