Departure and Structural Change
<cite index="8-1">Johannes Heidecke, who has led OpenAI's safety systems team since 2024, informed colleagues this week that he will leave the company by July 24.</cite> <cite index="8-2">His departure, first reported by *Wired* on Friday evening and subsequently confirmed by Bloomberg, The Next Web, and Engadget,</cite> follows an internal reorganization that eliminates the safety function's independent organizational standing.
<cite index="2-5">In a memo to staff seen by *Wired*, Chief Research Officer Mark Chen said the company's safety teams will now report to OpenAI's Vice President of Research and Head of Alignment Mia Glaese, who will take on a new and larger role as VP of Research and Safety.</cite> <cite index="4-8">Saachi Jain has been named interim head of safety systems while the company searches for Heidecke's permanent replacement.</cite>
Chen offered a rationale grounded in operational velocity. <cite index="6-7,6-8,6-9,6-10">"The demands on safety continue to increase. We are training models at a much faster cadence, and release cycles have come down greatly in turn," Chen wrote in the memo. "As a result, we have bigger coordination challenges around safety today than ever before."</cite> Chen added in a public statement that it is <cite index="7-8">"important that our safety work is integrated with frontier-model development, with an earlier and more direct role in shaping key model, product and launch decisions."</cite>
Heidecke's Tenure
<cite index="4-10">Heidecke joined OpenAI in 2021 as an artificial intelligence (AI) safety analyst and took over the head of safety systems role in 2024, succeeding Lilian Weng.</cite> <cite index="3-3">His work included model alignment, rule-based reward systems, and preparedness evaluations.</cite> <cite index="9-6">Following the late-2025 departure of model-policy chief Andrea Vallone to Anthropic, Heidecke briefly inherited her team as well, making him the senior safety leader overseeing the broadest portfolio OpenAI had assembled in that function.</cite>
A Pattern of Safety Departures
<cite index="8-2,8-3">Heidecke's departure is the sixth in a string of senior safety-focused exits from OpenAI stretching back to May 2024. Before him: Jan Leike, who co-led the Superalignment team and left for Anthropic; Miles Brundage, who left to build an external AI safety nonprofit; Steven Adler, who did the same; Andrea Vallone, who joined Leike at Anthropic at the end of 2025; and Chief Futurist Joshua Achiam, who notified colleagues earlier this month that he would depart after nine years.</cite>
<cite index="11-11">OpenAI's Superalignment team, announced in 2023 with a pledge of 20% of the company's compute, was dissolved in May 2024 after its co-leads, Ilya Sutskever and Jan Leike, departed.</cite> <cite index="11-12">Leike wrote publicly on leaving that "safety culture and processes have taken a backseat to shiny products." The AGI Readiness team followed in October 2024 when its leader Miles Brundage resigned; the Mission Alignment team, Superalignment's successor, was disbanded in February 2026 after 16 months, with its leader Joshua Achiam given the new title of "chief futurist."</cite>
<cite index="4-9">It is the second time in less than two years that OpenAI has folded its safety organization into a structure reporting to a research lead.</cite>
Structural Debate
<cite index="9-2">The reorganization means that for the first time since Heidecke took the role in 2024, there is no head of safety systems with an independent reporting line outside the research chain.</cite> <cite index="9-3">OpenAI still employs a head of preparedness — a separate role focused on the company's Preparedness Framework, the internal risk-scoring methodology that classifies model capabilities as low, medium, high, or critical — but that function now sits within a research-led structure whose primary mandate is advancing capabilities.</cite>
<cite index="11-14,11-15">Chen's stated logic is that embedding safety inside research gives it a seat in model decisions from the start, rather than as a final checkpoint before launch. Critics argue that a safety team reporting inside research has less structural independence, and less leverage to delay or block a product, than one that reports separately.</cite>
Broader Context
The reorganization coincides with a busy period of product and leadership change at OpenAI. <cite index="6-11">The reorganization comes days after OpenAI launched GPT-5.6, its most capable model for agentic coding tasks.</cite> <cite index="6-14,6-15">OpenAI's chief futurist Joshua Achiam told colleagues earlier this week he would leave after nine years researching safety, and Fidji Simo, the company's CEO of AGI deployment, said she would step down after an extended medical leave, with Greg Brockman taking over go-to-market strategy alongside his product leadership role.</cite>
<cite index="11-13">The company launched a Safety Fellowship on April 6, inviting external researchers to conduct independent safety and alignment work at the lab.</cite> <cite index="11-17">The departure also comes as OpenAI navigates intensifying external scrutiny, with forty-two state attorneys general having opened an investigation into the company, serving a subpoena on advertising, user data, and internal policies.</cite>