Text to Speech for Audiobooks
100ms latency. Narration That Reads the Room, Not Just the Page.
Enter your own text
Text to Speech for Audiobooks
100ms latency. Narration That Reads the Room, Not Just the Page.
Enter your own text
Text to Speech for Audiobooks
100ms latency. Narration That Reads the Room, Not Just the Page.
Enter your own text
Generate speech in any audiobook in a few easy steps
Turn any text into natural-sounding audio. Choose from expressive voices, tune speed and sample rate, and stream directly into your product .
Generate speech in any audiobook in a few easy steps
Turn any text into natural-sounding audio. Choose from expressive voices, tune speed and sample rate, and stream directly into your product .
Generate speech in any audiobook in a few easy steps
Turn any text into natural-sounding audio. Choose from expressive voices, tune speed and sample rate, and stream directly into your product .
Enter your manuscript
Drop in a chapter, a section, or an entire book.

Enter your manuscript
Drop in a chapter, a section, or an entire book.

Pick a narrator voice
Clone the author's voice or choose a built-in narrator — consistent across every session.

Pick a narrator voice
Clone the author's voice or choose a built-in narrator — consistent across every session.

Stream or download your audiobook
Broadcast-quality PCM, MP3, or WAV — ready for any distribution platform.

Stream or download your audiobook
Broadcast-quality PCM, MP3, or WAV — ready for any distribution platform.

Built for a wide range of use cases
From audiobooks to voice agents, ship natural-sounding audio in any language, for any product, any platform, and at any scale.
Built for a wide range of use cases
From audiobooks to voice agents, ship natural-sounding audio in any language, for any product, any platform, and at any scale.
Built for a wide range of use cases
From audiobooks to voice agents, ship natural-sounding audio in any language, for any product, any platform, and at any scale.

No Studio Required
Record with 15 seconds of audio and generate hours of narration — no booth, no engineer.

Multiple Characters
Distinct voice profiles for every character — no switching models or hiring additional actors.

Consistent Narration
Consistent tone and expressiveness across full-length books — no drift between sessions.

Broadcast Quality
PCM, MP3, WAV output — ready for Audible, Spotify, and any distribution platform.

15+ Languages
Publish the same title in any language with the same voice and quality.
Generate speech on the web, via API, or in your platform
Generate speech on the web, via API, or in your platform
Generate speech on the web, via API, or in your platform
We’re not playing around, but you can
Put our Voice AI models to the test in our no-code playground.

We’re not playing around, but you can
Put our Voice AI models to the test in our no-code playground.

One API call. Any voice. Any scale.
Use our APIs & SDKs and deploy custom workflows, webhooks & secure model calls in production

One API call. Any voice. Any scale.
Use our APIs & SDKs and deploy custom workflows, webhooks & secure model calls in production

One API call. Any voice. Any scale.
Use our APIs & SDKs and deploy custom workflows, webhooks & secure model calls in production

Certified & Compliant
Guarding your data with enterprise security
Certified & Compliant
Guarding your data with enterprise security
Certified & Compliant
Guarding your data with enterprise security
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
Will the narration sound natural across a full-length book?
How long does voice cloning take and how much audio do I need?
Can Lightning differentiate between multiple characters?
How is usage billed and is there a free tier?
Can I integrate Lightning into my publishing platform or workflow?
The last TTS model you'll need
311 California Street, Suite 320
San Francisco, CA 94104
Documentation
Initiatives
The last TTS model you'll need
311 California Street, Suite 320
San Francisco, CA 94104
Documentation
Initiatives
The last TTS model you'll need
311 California Street, Suite 320
San Francisco, CA 94104
Documentation
Initiatives







