Funding › Investors

Sierra Ventures portfolio: 3 rounds in AI and data

Rounds where Sierra Ventures led or took part, newest first. Led: 0.

1. Smallest.ai raises $13M Series A, Jul 31, 2026. AI apps. Led by Seligman Ventures. Builds small, specialized voice AI models for real-time conversational agents in customer support.
2. Smallest.ai raises $8M Seed, Oct 1, 2025. AI models. Smallest.ai builds real-time speech models and voice AI agents for enterprises.
3. Friendli raises $20M Seed, Aug 28, 2025. AI infrastructure. Led by Capstone Partners. FriendliAI provides an inference engine and cloud service that serves generative AI models faster and at lower cost.