Smallest.ai is a San Francisco-based voice AI company building small, efficient multimodal models and an agentic platform for real-time voice applications. Its product lineup includes Lightning (text-to-speech with ~100ms latency across 15+ languages), Pulse (speech-to-text in 38 languages with emotion and speaker detection), Electron (a sub-3B-parameter language model), and Hydra (native speech-to-speech). The platform supports voice cloning and agent configuration, with APIs and documentation for developers, and maintains SOC 2, GDPR, and HIPAA compliance. In 2025 the company raised an oversubscribed $8M seed round led by Sierra Ventures with 3one4 Capital and others.