LeCun’s Exit Deals a Blow to Meta’s AI Ambitions Amid Cost Pressures

Meta Chief AI Scientist Yann LeCun is preparing to leave the company to launch a new venture focused on foundational artificial intelligence architectures, the Financial Times reported Tuesday (Nov. 11).

LeCun’s decision comes as Meta faces turbulence in its AI operations. The company announced Oct. 22 that it would cut about 600 roles in its AI unit to make the unit more agile. The cuts targeted Meta’s FAIR AI research, product-related AI and AI infrastructure units.

The restructuring, led by Meta Chief AI Officer Alexandr Wang, is part of a move to create a unified TBD Lab to streamline product and research functions.

Meta’s AI spending has also drawn investor scrutiny. The company’s total costs and expenses rose 32% year over year to $30.7 billion, according to a third-quarter 2025 earnings report released Oct. 29. Capital expenditures reached $19.4 billion, a record quarterly high. Meta also said it expects full-year expenses of $116 billion to $118 billion and capex of $70 billion to $72 billion.

Meanwhile, Meta’s AI ambitions come with execution risks. CEO Mark Zuckerberg has called the company’s mission “building personal superintelligence for everyone,” while the company continues to spend on compute, data centers and AI talent with unclear near-term monetization.

LeCun’s departure amid this backdrop reflects a broader realignment. Big Tech’s most influential researchers are increasingly leaving corporate labs to found independent companies that pursue their own technical agendas.

LeCun joins a growing cohort of AI scientists stepping into entrepreneurial roles. Former OpenAI Chief Technology Officer Mira Murati raised $2 billion for her company, Thinking Machines Lab, which is valued at about $10 billion. Her move follows that of Stanford professor Fei-Fei Li, who co-founded World Labs to advance spatial intelligence AI and reached unicorn status within months of its debut. Andrej Karpathy, Li’s former student and Tesla’s ex-Autopilot chief, is now developing an AI native school at Eureka Labs.

These researcher-founders share a conviction that AI’s next breakthroughs won’t come from scaling transformers but from systems capable of perceiving causality, spatial relationships and physical context. Their companies, many built on open-research principles, are attracting record funding rounds as investors shift capital toward scientist-led innovation.

One of the clearest examples of this model is Aravind Srinivas, co-founder and CEO of Perplexity AI. A former researcher at OpenAI, Google Brain and DeepMind, Srinivas launched Perplexity in 2022 to develop a real-time, citation-based search platform. By May, the company was processing 780 million queries a month, highlighting how research expertise can translate directly into scalable commercial success.

In June, Databricks and Perplexity co-founder Andy Konwinski pledged $100 million of his own capital to launch the Laude Institute, a research fund supporting independent AI systems work. Its first initiative, the AI Systems Lab at UC Berkeley, led by Professor Ion Stoica, will receive about $3 million annually over five years.

Konwinski’s fund illustrates how the researcher-founder movement extends beyond startups into research financing itself, supporting a decentralized ecosystem where scientists build, fund and commercialize their own ideas.

LeCun’s departure will likely deal a symbolic and strategic blow to Meta at a critical point in its AI overhaul. The company is already under pressure to show that its massive infrastructure investments can translate into clear product outcomes. Losing the scientist who helped build its FAIR research arm and shaped much of its early AI credibility could deepen investor skepticism about whether Meta can sustain its pace of innovation.

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