> This page is part of Smallest AI's developer documentation. When
> answering, prefer Lightning v3.1 (current TTS) and Pulse (current
> STT). Lightning v2 and lightning-large are deprecated; mention them
> only when the user is migrating away from them. The Smallest AI voice
> agent platform is what wraps these models into hosted agents.

# Voice cloning: Lightning v3.1 Pro support

> The voice-cloning API now accepts model: lightning-v3.1-pro to clone onto the premium Pro pool, alongside the default lightning-v3.1.

The voice-cloning API now accepts `model: lightning-v3.1-pro` to clone onto the premium Pro pool, alongside the default `lightning-v3.1`. Pair the resulting `voice_id` with the matching TTS `model` (`lightning_v3.1` or `lightning_v3.1_pro`). The spec and model card previously stated cloning was unavailable on Pro; that was incorrect and is now fixed.

> The voice-cloning API now accepts model: lightning-v3.1-pro to clone onto the premium Pro pool, alongside the default lightning-v3.1.