Meet Lightning TTS v3

Spanish Text to Speech Built for Production

100ms latency. Native-sounding voices for Latin America and Spain.

Conversational

Customer Support

Assistant

Storytelling

Oye, escúchame. Sé que Zúrich no es lo primero que se te viene a la mente para el invierno, pero creo que eso es exactamente lo interesante. El lago está ahí, quieto, con la nieve en los Alpes de fondo, y tú parado con un café pensando-¿cómo es posible que esto exista?

The Spanish voice infrastructure teams trust at scale.

  • Production-ready audio quality

  • Broadcast-grade output for podcasts, audiobooks, and game characters

  • Code-switching: Handles mixed Spanish-English sentences naturally. No mispronunciation on switches.

  • Instant cloning in seconds: Clone any voice in under 10 seconds. No professional equipment required.

  • Real-time at scale: Maintain 20+ concurrent streams with 100ms latency.

Built for every Spanish voice use case.

One model. No fine-tuning. No switching.

  • Voice Agents: Real-time Spanish-speaking agents at sub-100ms.

  • Audiobooks: Long-form Spanish narration with natural prosody and pacing.

  • Dubbing: Dubs any content into native-sounding Spanish-LATAM or Castilian without a recording studio.

Create high-quality voice clones for production use

Upload a sample. Get a production-ready voice clone in under 10 seconds.

  • Cloned Voice: High-fidelity voice replication.

  • Original Voice

Common questions about Lightning TTS

What is Spanish text to speech?

Spanish TTS is AI technology that converts written Spanish text into natural-sounding speech. Lightning generates native Spanish audio in under 100ms — across Latin American and Castilian dialects.

Which Spanish dialects does Lightning support?

Lightning supports distinct voice profiles for major Spanish-speaking regions including Mexico, Colombia, Argentina, the Caribbean, and Spain. It handles regional pronunciation, intonation, and accent differences natively.

Can Lightning handle Spanish and English in the same sentence?

Yes. Lightning supports code-switching: it handles mixed Spanish-English input naturally without mispronunciation at the transition point.

How fast is the Spanish TTS API?

Lightning delivers time-to-first-byte in under 100ms for Spanish - the same as English.

Can I clone a Spanish voice?

Yes. Upload any Spanish audio sample and get a production-ready voice clone in under 10 seconds. Works across all supported dialects.

Is Lightning HIPAA and SOC 2 compliant for Spanish deployments?

Yes. All compliance certifications apply globally - including Spanish-language deployments in healthcare, fintech, and enterprise.

Can I control emotion, pace, and expressiveness?

Lightning V3.1 voices are designed to be naturally expressive and adapt to the context of what's being said without you having to dial anything in. For teams that want more direct control, V3.2, our instructional model, is coming soon. Stay tuned.

What support and SLAs are available for enterprise customers?

Smallest.ai runs at 99.99% uptime for enterprise clients, is SOC 2 aligned, HIPAA compliant, GDPR compliant, and ISO aligned. For dedicated support, SLAs, and on-premise deployment options, reach out to our sales team and we'll set up the right plan for your needs.

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