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Lightning V3

Lightning V3

Text-to-Speech built for Voice Agents

Website smallest.ai
Overview

What it is

Our conversational AI agents talk, text, and email your customers for you. Super fast and super safe. They work right inside the tools you already use. No messy add-ons, no data leaks. Just smooth, fast help for every customer.

Intent

I need it when

Reduce computational overhead while maintaining high-quality voice synthesis

Lightning V3 is built on Smallest AI's small, efficient model architecture that achieves production-grade quality with lower resource consumption than large models, reducing infrastructure costs and enabling edge deployment

Integrate production-grade TTS into applications without managing infrastructure

Lightning V3 is offered as a managed API with pay-as-you-go pricing (~$0.025 per 1000 characters), allowing developers to scale from prototyping to production without deploying or maintaining TTS infrastructure

Deploy voice AI across multiple languages and regions efficiently

Lightning V3 supports 15+ languages natively and is optimized for real-time streaming, enabling global voice applications with consistent performance and minimal latency regardless of language or deployment region

Build real-time voice agents with ultra-low latency text-to-speech

Lightning V3 delivers 100ms latency text-to-speech across 15+ languages, enabling developers to create responsive voice agents that sound natural and immediate, critical for conversational AI applications

Drop

Not a fit when

  • User requires on-premise deployment without custom enterprise agreement, as Lightning V3 on-premise is not available in standard plans
  • User needs guaranteed 99.99% SLA uptime, which is only available in enterprise plans, not pay-as-you-go tier
  • User requires HIPAA compliance at no additional cost, as HIPAA zero data retention is a $1000/month add-on
  • User needs more than 5 concurrent TTS requests in pay-as-you-go tier without upgrading to enterprise
  • User requires professional voice cloning support, which is not available in standard pay-as-you-go plans
Commercials

Pricing

Pay-as-you-go API pricing per 1000 characters for text-to-speech, with free tier and enterprise options available View pricing