Kalpa Labs
Kalpa Labs is a YC Fall 2025 (F25) company. Team of 2.
About Kalpa Labs
Summary
Kalpa Labs builds generalist audio models that understand and follow instructions, learn new tasks from context, and unify capabilities like speech-to-text, text-to-speech, and voice cloning into a single system. The first product is a conversational speech model that replicates not just speaker identity but delivery nuance, including pacing and emotional tone. It replaces the patchwork of single-purpose speech APIs that developers currently stitch together.
Business model
API access with a self-serve model via documented endpoints.
Go-to-market
Developers and builders access the models directly through a REST API or an in-browser playground, with a Studio interface for directing multi-speaker scenes, putting initial adoption in self-serve hands.
From the Y Combinator listing
Scaling Generalist Speech models
We're building the next frontier of speech models. Generalist speech models that unlock in-context learning & strong instruction following for speech models alongside unifying existing speech capabilities like speech to text, text to speech, voice cloning, etc.
Facts
- B2B / B2B
- 2
- Active
- Early
Founders (2)
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