Meet us at Global Fintech Fest 2026

Meet us at Global Fintech Fest 2026

Lightning™

Text to Speech. Your words, our voices.

Create studio-quality audiobooks, podcasts and more. Across 70+ languages, accents and dialects.

Enter your own text

English
jordan

Lightning™

Text to Speech. Your words, our voices.

Create studio-quality audiobooks, podcasts and more. Across 70+ languages, accents and dialects.

Enter your own text

English
jordan

Lightning™

Text to Speech. Your words, our voices.

Create studio-quality audiobooks, podcasts and more. Across 70+ languages, accents and dialects.

Enter your own text

English
jordan

What is Text-to-Speech?

Text-to-Speech turns written content into natural, expressive audio that can be generated instantly and delivered at production scale.

Built for a useful next step, not just a response.

Built for a useful next step, not just a response.

Voice clones that steal your thunder.

Upload a sample. Get a production-ready voice clone in under 10 seconds. No studio. No setup.

Voice clones that steal your thunder.

Upload a sample. Get a production-ready voice clone in under 10 seconds. No studio. No setup.

Voice clones that steal your thunder.

Upload a sample. Get a production-ready voice clone in under 10 seconds. No studio. No setup.

Original Voice

Cloned Voice

AI voices that stay unmistakably yours

Original Voice

Cloned Voice

AI voices that stay unmistakably yours

Hear what you feel, word for word.

Lightning™ TTS delivers studio-quality speech at sub-100ms latency.

Hear what you feel, word for word.

Lightning™ TTS delivers studio-quality speech at sub-100ms latency.

Hear what you feel, word for word.

Lightning™ TTS delivers studio-quality speech at sub-100ms latency.

Production-ready audio quality

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

Multilingual and adaptive

15 languages. Automatic detection. Seamless code-mixing mid-sentence.

Instant voice cloning

Clone any voice in under 10 seconds. no professional equipment required

Real-time at scale

Maintain 20+ concurrent streams with 100ms latency

From model proof to
production implementation

Check model specifications, available voices and languages, custom voices, and streaming before you build.

Lightning model

Review supported capabilities, performance, and model specifications.

Voices & languages

Upload your docs, FAQs, product specs, and legal files so your agent can answer from grounded knowledge.

Instant voice cloning

Bring voice agents to real phone calls using Smallest-managed numbers or your telephony setup.

Streaming speech

Let agents take action in your existing stack instead of only answering questions.

This Lightning™ strikes more than once.

From real-time agents to long-form narration Lightning adapts to every context, every product, every scale.

This Lightning™ strikes more than once.

From real-time agents to long-form narration Lightning adapts to every context, every product, every scale.

This Lightning™ strikes more than once.

From real-time agents to long-form narration Lightning adapts to every context, every product, every scale.

Voice Agents

Conversational AI that sounds like a real person not a script reader.

Gaming

Dynamic character voices with emotional range.

Audiobooks

Long-form narration with natural prosody and pacing.

Voice Agents

Conversational AI that sounds like a real person not a script reader.

Gaming

Dynamic character voices with emotional range.

Audiobooks

Long-form narration with natural prosody and pacing.

Voice Agents

Conversational AI that sounds like a real person not a script reader.

Gaming

Dynamic character voices with emotional range.

Audiobooks

Long-form narration with natural prosody and pacing.

Media

Presenter-quality voice for intros, ads, and full episodes.

Content

Generates voiceovers for any video format

Accessibility

Create clear,speech optimised for screen readers and assistive tools.

Media

Presenter-quality voice for intros, ads, and full episodes.

Content

Generates voiceovers for any video format

Accessibility

Create clear,speech optimised for screen readers and assistive tools.

Media

Presenter-quality voice for intros, ads, and full episodes.

Content

Generates voiceovers for any video format

Accessibility

Create clear,speech optimised for screen readers and assistive tools.

Bring your own voice

Create an approved voice clone from a short sample for a consistent brand, narrator or character voice.

API

SDK

Visual tools

Preparing production reference audio Review voice cloning best practices.

Generate your first audio response with the Text-to-Speech quickstart.

Designing a real-time experience? See how streaming TTS for developers changes latency, UX, and cost.

01const res = await fetch(02 "https://api.smallest.ai/waves/v1/lightning-v3.1/get_speech",03 {04 method: "POST",05 headers: {06 Authorization: "Bearer YOUR_API_KEY",07 "Content-Type": "application/json",08 },09 body: JSON.stringify({10 text: "Modern problems require modern solutions.",11 voice_id: "magnus",12 sample_rate: 44100,13 output_format: "wav",14 }),15 },16);17 18writeFileSync("output.wav", Buffer.from(await res.arrayBuffer()));19console.log("Saved to output.wav");
01const res = await fetch(02 "https://api.smallest.ai/waves/v1/lightning-v3.1/get_speech",03 {04 method: "POST",05 headers: {06 Authorization: "Bearer YOUR_API_KEY",07 "Content-Type": "application/json",08 },09 body: JSON.stringify({10 text: "Modern problems require modern solutions.",11 voice_id: "magnus",12 sample_rate: 44100,13 output_format: "wav",14 }),15 },16);17 18writeFileSync("output.wav", Buffer.from(await res.arrayBuffer()));19console.log("Saved to output.wav");

From one line to a whole library

Power voice agents, games, videos, podcasts, audiobooks, e-learning, media and accessibility from the same platform.

  1. Voice agents

    Live conversation

  2. Games

    Dynamic characters

  3. Media

    Video and podcasts

  4. Accessibility

    Clear spoken context

One speech model, many production paths

Match the production workflow and final destination, then use the nearest implementation path.

Voice agents

Give live conversational systems a natural, low-latency response layer.

Audiobooks

Turn written catalogs into consistent long-form narration.

Accessibility

Build clear read-aloud experiences for websites and digital products.

A text-to-speech API that stays out of the way

Send text and receive streamable audio through a documented API for web, mobile, telephony or backend workflows.

Web

Browser experiences

Mobile

Native applications

Telephony

Real-time calls

Backend

Automated workflows

Certified & Compliant

Built for production not just a demo

Run concurrent speech workloads with enterprise controls and support for ISO 27001, SOC 2 Type 2, GDPR and HIPAA requirements.

Certified & Compliant

Built for production not just a demo

Run concurrent speech workloads with enterprise controls and support for ISO 27001, SOC 2 Type 2, GDPR and HIPAA requirements.

Certified & Compliant

Built for production not just a demo

Run concurrent speech workloads with enterprise controls and support for ISO 27001, SOC 2 Type 2, GDPR and HIPAA requirements.

Proactive Defense

Anticipating threats before they emerge, thanks to our advanced monitoring.

Proactive Defense

Anticipating threats before they emerge, thanks to our advanced monitoring.

Proactive Defense

Anticipating threats before they emerge, thanks to our advanced monitoring.

Frequently
asked questions

Can I try text to speech online?

Is Lightning suitable for real-time agents?

Can I use my own voice?

Is there a text-to-speech API?