Sesame
Sesame is a TTS / Voice Synthesis company founded in 2023 and based in San Francisco, United States. It has raised $297.5M in total funding, most recently a Series B in 2025.
Sesame builds fast, high-fidelity voice models for conversational AI with a focus on multilingual support and low-latency inference. Early-stage startup backed by Y Combinator and Kleiner Perkins; rapidly gaining traction among voice-agent builders.
Sesame is positioned as a developer-friendly alternative to ElevenLabs, targeting the voice-agent infrastructure market.
sesame.com ↗·TTS / Voice Synthesis·
United States·private 
