Smallest AI

2026Smallest AIpaid

Lightning v3.1 Pro

v3.1 Pro
text-to-speech
AI

Lightning v3.1 Pro is a premium text-to-speech model developed by Smallest AI, offering high-fidelity, real-time speech synthesis with a curated voice catalog across American, British, and Indian accents. It supports English and Hindi languages, including code-switching, and operates at a native sample rate of 44.1 kHz for broadcast-quality audio. Designed for conversational AI and live streaming, it offers ultra-low latency and streaming capabilities via HTTP, SSE, and WebSocket transports. The model is accessible through Smallest AI's API, with pricing based on usage without upfront commitments or minimums.

High-fidelity 44.1 kHz audio
Real-time optimized for low-latency applications
Supports English and Hindi with code-switching
version3.1 Pro
regionUnited States
2026Smallest AIpaid

Lightning v3

vv3
Audio
Agentic AI

Lightning v3 is Smallest AI's latest text-to-speech (TTS) model, engineered for conversational voice agents. It offers hyper-realistic speech synthesis across 15 languages, with automatic language detection and mid-sentence language switching.

Hyper-realistic speech synthesis
Support for 15 languages
Automatic language detection
pricingAvailable on a pay-as-you-go plan
versionv3