Overview
Smallest.ai Text-to-Speech delivers real-time, low-latency TTS with voice cloning and emotion control, supporting 16+ languages and a growing set of accents. It provides a Voice Library and a TTS Studio for creating/customizing voices, plus on-prem and cloud deployment options for enterprise contact centers with strong security controls including SOC 2 Type II, HIPAA alignment, GDPR, PCI, and ISO-aligned infrastructure. Pricing includes Free trial / freemium with subscription and usage-based elements, plus add-ons such as Extra Custom Agent Setup and phone-number options. Integration capabilities include SIP endpoints, CRM/webhook integrations, and 30+ tooling integrations. Documentation covers Atoms and Waves APIs for telephony, and support channels include email and sales/demo requests.
Key Features
Real-time, context-aware TTS
Real-time voice synthesis suitable for live agents in contact centers, IVR, and outbound/inbound calls.
Voice cloning
Clone any voice and create custom personas by adjusting age, accent, emotion, tone and pronunciation.
Emotion & prosody control
Platform detects or accepts emotion/context to modify delivery and reduce misinterpretations.
Voice Library + TTS Studio
Browse prebuilt voices or craft custom voices and preview audio.
Multi-voice content & multi-lingual
Supports 16+ languages with expanding accents.
Low-latency Lightning models
Low-latency models marketed as Lightning family, V1 & V2.
Who Can Use This Tool?
- Enterprise:Need on-prem/cloud deployment, strict security, and SLA-backed uptime for large teams.
- Developers:No-code builder and API for rapid voice prototyping and testing.
- Telephony teams:SIP integration for IVR and live-call center use cases across cloud and on-prem.
Pricing Plans
Free: 0 USD/month — 1 Template AI Agent, basic TTS access, full TTS Studio access, $1 in test credits (for evaluation).
- ✓1 Template AI Agent
- ✓basic TTS access
- ✓full TTS Studio access
- ✓$1 test credits for evaluation
Personal: $49/month — no-code builder up to 5 agents, Premium Lightning voices, ~3 concurrent requests.
- ✓no-code builder up to 5 agents
- ✓Premium Lightning voices
- ✓~3 concurrent requests
Business: $1,999/month — larger teams, professional voice clone support, bigger credit bundles, 15 concurrent requests, priority support, CRM/webhook options.
- ✓larger teams
- ✓professional voice clone support
- ✓bigger credit bundles
- ✓15 concurrent requests
- ✓priority support
- ✓CRM/webhook options
Enterprise: custom pricing — on-prem/VPC, SLA-backed uptime, dedicated account manager, custom limits and integrations.
- ✓on-prem/VPC deployments
- ✓SLA-backed uptime
- ✓dedicated account manager
- ✓custom limits and integrations
Billed per-character (per-10k-character pricing referenced on site; exact rates not publicly listed).
- ✓In-house Lightning V1/V2 models
- ✓Per-character billing (per-10k chars)
Pros & Cons
✓ Pros
- ✓Enterprise-grade, context-aware TTS
- ✓Voice cloning with customizable voices
- ✓Real-time, low-latency delivery
- ✓16+ languages and expanding accents
- ✓On-prem and cloud deployment options
- ✓Strong security and compliance (SOC 2 Type II, HIPAA, GDPR, PCI)
- ✓Rich integrations (SIP, CRM/webhook, 30+ tools)
- ✓Voice Library and TTS Studio for voice creation and preview
✗ Cons
- ✗Public per-character rates are not listed; exact pricing requires contact
- ✗Enterprise pricing is custom
- ✗Potential extra costs for voice-clone training
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