a16z launches Cosign, a professional reputation product built on endorsements
a16z · youtube · 2026-09-25
a16z's Erik Torenberg talks with Josh Elman, Olivia Moore, and David Booth about Cosign, a new product built around professional reputation.
- The core idea: the most valuable career signals aren't credentials but who believes in you — mentors, colleagues, investors willing to put their name behind you
- Human endorsements may become more valuable as AI floods outreach and information
- Argues reputation should be granular, not generic; critiques why LinkedIn and X fall short
- Public cosigns as social capital, and how legible reputation helps talent get discovered earlier
Related event: a16z Launches Cosign, a Reputation Layer for the Startup Ecosystem(3 posts)→
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