Smallest AI

What is Smallest AI?

Smallest AI is a cutting-edge voice AI platform offering ultra-fast text-to-speech (TTS), speech-to-text (STT), and full-duplex speech-to-speech models designed for real-time conversational applications. With time-to-first-byte as low as 100ms for TTS and sub-400ms average response latency, it powers over 1 billion calls monthly for enterprise clients. Pricing: Pay-as-you-go from ~$0.005/minute (STT) and ~$0.20/10K characters (TTS); Enterprise custom pricing.

Getting Started with Smallest AI

Smallest AI provides an API-first platform. Sign up at smallest.ai to access the developer console, get API keys, and start integrating the Lightning TTS or Pulse STT models into your applications. Comprehensive documentation and SDKs are available for rapid integration.

Quick Start

• Register at smallest.ai and obtain your API key
• Choose your model: Lightning (TTS), Pulse (STT), or Hydra (Speech-to-Speech)
• Make your first API call with the provided code samples
• Scale to production with pay-as-you-go billing

Core Features

• Lightning TTS: World's fastest TTS with 100ms time-to-first-byte, 30+ languages, thousands of accents
• Pulse STT: State-of-the-art speech-to-text across 38+ languages with streaming and batch support
• Hydra Speech-to-Speech: Full-duplex multimodal model for natural AI conversations
• Voice Cloning: Instant voice cloning — create custom voices in seconds
• Emotion Detection: Identifies speaker emotions in transcriptions
• Code-Switching: Handles multilingual conversations within single audio streams
• Electron SLM: Small language model optimized for conversational use-cases at 45ms TTFT

Tutorial: Building a Voice Agent

1. Sign up and access the Smallest AI dashboard
2. Create an API key for your project
3. Integrate Pulse STT for real-time user speech capture
4. Connect your LLM for response generation
5. Use Lightning TTS to convert responses to speech with emotional voices
6. Deploy via Hydra for end-to-end speech-to-speech interaction

Best Practices

• Use streaming endpoints for real-time applications to minimize perceived latency
• Leverage instant voice cloning for custom brand voices
• Use Pulse Realtime for live customer service applications
• Implement emotion detection to route calls based on customer sentiment
• Choose Lightning V3.1 for highest quality TTS output

Pros and Cons

Pros

• Industry-leading latency — 100ms TTFB for TTS
• 1B+ calls monthly — proven at massive scale
• SOC 2, HIPAA, PCI, GDPR compliant
• Supports 38+ languages with code-switching
• Instant voice cloning included in all plans

Cons

• Primarily API-focused — no consumer-facing UI
• Electron SLM only available on Enterprise plan
• On-premises deployment requires Enterprise contract

Community Reviews

Enterprises like Paytm Labs rely on Smallest AI for high-complexity payment contact centers, praising its "highest quality of speech agents." The platform has demonstrated 90% improvements in show-up rates and 50% cost reductions for B2C calling workflows. Developers appreciate the clean API and sub-400ms latency for production deployments.

Summary

Smallest AI is a specialized voice AI infrastructure platform targeting developers and enterprises that need ultra-low latency, production-grade TTS and STT. With its suite of Lightning, Pulse, and Hydra models, it delivers among the fastest and most accurate voice AI available, making it the go-to choice for conversational AI applications requiring real-time responsiveness at scale.