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Adam Mosseri: Building Instagram for an AI world

Adam Mosseri is the Head of Instagram, where he oversees an app used by over 3 billion people. He also leads the team building Threads. Adam has run Instagram for longer than its founders did, after taking over from Kevin Systrom and Mike Krieger in 2018. A designer by training, he spent over 15 years at Meta, starting as a designer on Facebook’s mobile app, rising to lead Facebook’s News Feed, and eventually chosen to lead Instagram. During his tenure, Instagram’s user base has more than tripled. *In our in-depth conversation, we discuss:* 1. How the canonical product team structure is changing in 2026, from baker’s-dozen specialist teams to lean pods of four to six generalists 2. The rise of the “product staff” role—a blending of PM, design, data science, and research into one generalist operator 3. Why Adam is bullish on designers even as functional boundaries dissolve, and which roles are most at risk 4. What the Instagram algorithm knows about you, and why it’s only now catching up to what people assumed it knew years ago 5. Why the rise of AI-generated content is a tailwind for Instagram, and how the company is thinking about creator identity in a synthetic-content world 6. The two biggest product failures of Adam’s career—Facebook Home and the first version of Reels *Brought to you by:* WorkOS—Make your app enterprise-ready, with SSO, SCIM, RBAC, and more: https://workos.com/lenny Mercury—Radically different banking, now with Command: https://mercury.com/ *Episode transcript:* https://www.lennysnewsletter.com/p/adam-mosseri-ai-is-a-tailwind-for *Archive of all Lenny's Podcast transcripts:* https://www.dropbox.com/scl/fo/yxi4s2w998p1gvtpu4193/AMdNPR8AOw0lMklwtnC0TrQ?rlkey=j06x0nipoti519e0xgm23zsn9&st=ahz0fj11&dl=0 *Where to find Adam Mosseri:* • X: https://x.com/mosseri • LinkedIn: https://linkedin.com/in/mosseri • Instagram: https://www.instagram.com/mosseri *Where to find Lenny:* • Newsletter: https://www.lennysnewsletter.com • X: https://twitter.com/lennysan • LinkedIn: https://www.linkedin.com/in/lennyrachitsky/ *In this episode, we cover:* (00:00) Introduction to Adam Mosseri (02:09) How product teams are changing inside Meta (05:48) Blurring roles and career anxiety (14:01) Hiring traits that matter now (16:48) How AI is resetting who succeeds at work (19:38) How Meta thinks about token spend and AI costs (23:23) Where human judgment still matters (25:56) Why AI is not automatically great at strategy (30:36) Why great product leaders are curators (34:23) What Instagram’s algorithm actually knows about you (38:08) Why chronological feeds often disappoint users (40:56) Why AI content may be a tailwind for Instagram (43:42) The future of AI and human content in the feed (48:00) What Adam admires about other social platforms (52:05) How he handles public criticism (56:31) Lessons from the Instagram feed redesign backlash (01:00:21) Adam’s biggest failure: Instagram on iPad (01:03:03) His approach to kids, screens, and social media (01:06:56) What Adam wants listeners to remember *Referenced:* • What happens after coding is solved? | Fiona Fung (Manager of the Claude Code and Cowork Teams): https://www.lennysnewsletter.com/p/building-the-most-ai-pilled-engineering • Claude Code: https://www.anthropic.com/product/claude-code • Claude Cowork: https://www.anthropic.com/product/claude-cowork • Head of Claude Code: What happens after coding is solved | Boris Cherny: https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens • A rational conversation on where AI is actually going | Benedict Evans: https://www.lennysnewsletter.com/p/a-rational-conversation-on-where • OpenAI’s CPO on how AI changes must-have skills, moats, coding, startup playbooks, more | Kevin Weil (CPO at OpenAI, ex-Instagram, Twitter): https://www.lennysnewsletter.com/p/kevin-weil-open-ai • Mythos: https://www.anthropic.com/claude/mythos • Fable: https://www.anthropic.com/claude/fable • Pluralistic: The Reverse-Centaur’s Guide to Criticizing AI: https://pluralistic.net/2025/12/05/pop-that-bubble • Plastic Dream Sequence on Instagram: https://www.instagram.com/plasticdreamsequence • TikTok: https://www.tiktok.com • Facebook–Cambridge Analytica data scandal: https://en.wikipedia.org/wiki/Facebook%E2%80%93Cambridge_Analytica_data_scandal • Facebook Home: https://en.wikipedia.org/wiki/Facebook_Home _Production and marketing by https://penname.co/._ _For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com._ Lenny may be an investor in the companies discussed.

Adam MosseriguestLenny Rachitskyhost
Jul 9, 20261h 8mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

Adam Mosseri on AI, product teams, algorithms, and authenticity ahead

  1. Meta is shifting from large specialized product teams to smaller “pod” teams built around generalist engineers and a new “product staff” role, using AI tools to reduce mechanical specialist work and speed decision-making.
  2. As AI compresses the software development lifecycle, success increasingly depends on taste, strategic judgment, and the ability to steer tools with clear constraints rather than relying on AI for one-shot “strategy.”
  3. Mosseri argues Instagram’s recommender systems historically lacked human-legible semantic understanding, but LLMs can now translate embedding spaces into understandable interest topics, enabling new user agency like “see your algorithm.”
  4. Chronological feeds often underperform because they create spammy posting incentives and miss relevance, so Instagram balances user control with ranking systems that optimize long-term satisfaction and ecosystem health.
  5. AI-generated content is likely a tailwind for Instagram if it increases demand for real people, creativity, and perspective, but it also introduces ranking challenges, detection/labeling complexity, and new spam/fraud vectors.

IDEAS WORTH REMEMBERING

5 ideas

Small, generalist-heavy teams can out-execute larger specialist teams in an AI era.

Meta’s new pods emphasize 4–6 generalist engineers plus a “product staff” generalist, pulling in specialists only when needed; fewer handoffs and less “design by committee” can increase speed and clarity.

The most durable advantage is taste—knowing what to build, not just how to build it.

As building becomes cheaper via AI, choosing the right problems and shaping high-quality experiences becomes the bottleneck; Mosseri is “long on designers” because taste is hard to automate.

Career value shifts toward curiosity and comfort with being wrong in public.

Mosseri frames adaptation like learning a language: progress requires trying things, sounding foolish, taking correction, and iterating—especially as tools and best practices change monthly.

AI changes who thrives by shifting engineering from writing to planning and review.

If code generation is increasingly automated, engineers (and other roles) are rewarded for specification quality, code review rigor, and steering agents—strengths that differ from pure “fast coder” profiles.

Token spend will become a first-class resource decision, like headcount or GPUs.

Mosseri rejects “leaderboards” for token usage and expects eventual caps tied to trust/ROI; he anticipates usage rising even as per-token costs fall due to competitive pricing and smaller models.

WORDS WORTH SAVING

5 quotes

In a world where it's easier to build things, it's more important to make sure that your time is spent figuring out what you should be building in the first place.

Adam Mosseri

In a world where there's an abundance of synthetic content, I actually think people are gonna seek out creativity and authenticity and people more, not less.

Adam Mosseri

A str-strategy can't be like be the best or be amazing. It has to be controversial, that you have to be-- or there sh- a reasonable person should be able to disagree with it, 'cause otherwise you're probably just trying to compete on raw execution.

Adam Mosseri

I think people assume that there's a much more detailed semantic understanding of everybody's interests and preferences in the algorithm than there is.

Adam Mosseri

I think if you ask an AI just for a strategy lazily, you're not gonna get something great.

Adam Mosseri

Pods and smaller teams at Meta“Product staff” as an AI-enabled generalist roleHiring signals: grit, learning speed, self-awareness, curiosityToken spend, ROI, and AI cost governanceWhere humans matter: taste, vision, strategy, judgmentHow Instagram’s algorithm works (embeddings vs semantics)AI content: labeling, trust signals, and creator authenticity

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