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Smallest AI Lightning TTS

Plans and prices

Lightning V3.1 Pay as you go

$0.18usage-based

Standard Lightning v3.1 TTS pool

Lightning V3.1 Pro Pay as you go

$0.20usage-based

Premium Lightning v3.1 Pro TTS pool

Lightning V3.1 Enterprise

Priced on request

Custom pricing · Enterprise support and security options

Lightning V3.1 Pro Enterprise

Priced on request

Custom pricing · Enterprise support and security options

Pay as you go

Free

Full access to APIs and models · usage-based pricing · no monthly commitment

Enterprise plan

Priced on request

Dedicated infrastructure and enterprise-grade SLAs · priority support · advanced security, SSO, and compliance support

Every plan, in full

On the record

API access
Yessmallest.ai · read 20 Sep 2026
Company headquarters
Smallest's pricing page lists its address as 311 California Street, Suite 320, San Francisco, California 94104.smallest.ai · read 12 Oct 2026
Export formats
PCM,WAV,MP3,μ-law,A-lawsmallest.ai · read 20 Sep 2026
Integrations
Listed integrations include LiveKit, Pipecat, Agno, Vapi, n8n, TrueFoundry AI Gateway, Vonage, Plivo, and SignalWire.smallest.ai · read 12 Oct 2026
Intended users
The model card describes Lightning v3.1 as suited to real-time voice agents and products needing many voices, trained language catalogs, or instant cloning.docs.smallest.ai · read 12 Oct 2026
Known limitation
The model card says transliterated mixed-language text may produce suboptimal results and recommends using each language's native script.docs.smallest.ai · read 12 Oct 2026
Languages
20smallest.ai · read 20 Sep 2026
Languages
The model card lists 12 languages with trained voices and 20 accepted language codes plus automatic routing.docs.smallest.ai · read 12 Oct 2026
Latency
The product page says Lightning TTS delivers studio-quality speech at sub-100ms latency.smallest.ai · read 12 Oct 2026
Pronunciation control
Custom pronunciation dictionaries can handle specialized vocabulary, brand names, and domain-specific terms.docs.smallest.ai · read 12 Oct 2026
Purpose
Lightning turns written text into natural, expressive audio for production use.smallest.ai · read 12 Oct 2026
Security and compliance
Smallest's trust center lists ISO 27001:2022, SOC 2 Type II, HIPAA, GDPR, and PCI DSS, with reports available by request.security.smallest.ai · read 12 Oct 2026
Streaming and formats
The model supports HTTP, SSE, and WebSocket streaming, with PCM, MP3, WAV, ulaw, and alaw output formats.docs.smallest.ai · read 12 Oct 2026
Support
The model card directs users to Discord for community support and [email protected] for account and billing questions.docs.smallest.ai · read 12 Oct 2026
Use cases
The model card lists voice assistants, chatbots, live narration, accessibility tools, gaming, telephony, podcasts, and audiobooks as use cases.docs.smallest.ai · read 12 Oct 2026
Voice cloning
Lightning v3.1 supports instant voice cloning from 5–15 seconds of audio.docs.smallest.ai · read 12 Oct 2026
Voice data handling
The model card says voice cloning requires explicit consent, synthesized audio is not retained, and personal voice data is not stored beyond the cloning scope.docs.smallest.ai · read 12 Oct 2026

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