Mosaic
Mosaic is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA. Team of 2.
About Mosaic
Summary
Mosaic builds shared memory infrastructure for teams that work with AI coding agents. It captures every session's context, decisions, and history in one place, so any team member or agent can pick up an ongoing project without losing thread. The product replaces ad-hoc context-passing between developers and disconnected agent sessions.
Go-to-market
Engineering teams and their AI coding agents are the primary users, with adoption starting through a self-serve CLI install command aimed directly at developers.
From the Y Combinator listing
Defining the frontier of multiplayer AI.
Mosaic gives teams and their coding agents shared memory across every session, so everyone can understand what happened, why decisions were made, and pick up where someone else left off. We started as a real-time coding environment where multiple people and their agents can work together live. It went viral, defined the multiplayer AI category, and inspired frontier labs like Anthropic. Together, we’re building the infrastructure for people and agents to share context and work together.
Facts
- B2B / B2B
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (2)
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