Mem0, the YC-backed AI infrastructure startup founded by Taranjeet Singh, has raised $24 million in combined seed and Series A funding to scale its “memory passport” technology — an AI memory system that travels with users across apps, models, and agents. The new round was led by Basis Set Ventures, with participation from Kindred Ventures, Y Combinator, Peak XV Partners, and the GitHub Fund, alongside a roster of notable industry angels.
Launched in January 2024, Mem0 gives AI systems persistent, portable memory, solving one of the biggest limitations of large language models. Its cloud API, now the exclusive memory provider for AWS’s Agent SDK, processes more memory operations than any other provider and has attracted more than 80,000 developers.
Mem0 has rapidly become the most widely adopted open-source memory framework, surpassing 41,000 GitHub stars, 13 million downloads, and 186 million API calls in Q3 2025. The model-agnostic system works across OpenAI, Anthropic, and open-source LLMs and is powering next-generation applications — from therapy agents to productivity copilots.
With funding secured, Mem0 plans to expand its engineering team and continue building the foundational memory infrastructure for personalized, long-lived AI experiences.
Featured image: Credit: Mem0
