Mark Zuckerberg — AI will write most Meta code in 18 months

Mark Zuckerberg's prediction about AI-written code concerned Meta's internal effort to advance Llama research. In his 2025 interview, he describes coding and research agents connected to the company's own tools. He predicts that within 12 to 18 months, AI would write most code for those efforts, with agents taking goals, running tests and improving their work. The proposed feedback loop is that better AI helps researchers build the next generation. Zuckerberg also identifies a constraint on that acceleration: constructing data centers and securing energy take physical-world time. His forecast therefore combines faster research software development with infrastructure that still has to be built.

“I would guess that sometime in the next 12 to 18 months, we'll reach the point where most of the code that's going toward these efforts is written by AI.”

Mark Zuckerberg

“The average American has fewer than three friends, fewer than three people they would consider friends.”

Mark Zuckerberg

“But if you think something someone is doing is bad and they think it's really valuable, most of the time in my experience, they're right and you're wrong.”

Mark Zuckerberg

“DeepSeek basically had to spend a bunch of their calories and time doing low-level infrastructure optimizations that the American labs didn’t have to do.”

Mark Zuckerberg

“Usually, you create things that take away 90% of the work, and that leads you to want more people, not less.”

Mark Zuckerberg