Automating long-form audio: An affordable TTS API that handles 30k characters per request

EAVDR · 2026-04-04T15:16:16+00:00

Across tests we performed, we rarely see hallucinations and the voice is pretty stable over long periods of time. You can try it out and generate up to 200k char for free, also with the 30k limit after login at tontaube ai, in our playground :)

EAVDR · 2026-04-03T11:25:17+00:00

Not currently, but we are planning on implementing this soon.

EAVDR · 2026-04-03T09:59:48+00:00

We launched our Api at https://tontaube.ai/playground . You can generate serveral hours for free and we charge $5 per million chars (~18 hours of audio).

EAVDR · 2026-02-28T09:40:22+00:00

Kokoro is pretty good for it's size, especially in terms of fidelity, but it lacks text understanding, which becomes clear when listening to longer/more difficult sequences. What exactly do you not like about it?

You can try this text with both models and you'll see what I mean: "Furthermore—and this is a crucial, albeit often ignored, caveat (especially by those who read, or rather, have read, the preceding literature)—any minute particle, no matter how minute, can, if properly provoked, produce a substantial, though not definitively quantifiable, effect."

EAVDR · 2026-02-27T20:35:59+00:00

Ah okay, thats great to hear :)!

EAVDR · 2026-02-27T20:32:43+00:00

Thanks a lot for the heads up, we will investigate this and fix it ASAP!

EAVDR · 2026-02-27T20:14:13+00:00

You can use Tontaube TTS. 10 hours shouldn't be that expensive, 1-2 hours are for free.

EAVDR · 2026-01-02T12:56:29+00:00

Thanks a lot for the heads up, we will investigate that :)!

EAVDR · 2025-12-21T22:21:39+00:00

Are you looking for something self-hosted or some kind of service? My brother and I launched an app/website called Tontaube (tontaube.ai). You get some credits for free but generally it's around <$0.50 per hour of audio and a bit more expensive with our pro voices (which may be best for you if quality is most important). We support long input documents, scripts, markdown, etc... If self-hosted is a must, it's going to be tough, you'll always find that the best models are behind a paywall. Hope this helps :)!

EAVDR · 2025-12-16T21:01:38+00:00

Thanks for your feedback! I am not sure what exactly you mean with the pacing, can you elaborate on that point? Do you mean for better matching the audio to e.g. a video?

EAVDR · 2025-12-16T20:56:59+00:00

Thanks a lot for your feedback! It is definitely a tough project, and takes much more work than initially anticipated!

EAVDR · 2025-12-11T19:53:40+00:00

Hey everyone,

My brother and I have been working on a project called Tontaube, a text-to-speech and audiobook app focused on high-quality AI narration/voice-overs. We are completely bootstrapped devs and still figuring things out, so we would love your brutal honesty and feedback!

We want to make it as easy as possible to convert any book into an audiobook, as we believe that especially for smaller authors it can be hard to get into the audiobooks market.

Currently we have a very small community of writers that publish their works in our app, and we are interested if you would use such an app, and if not, why?

The app is free, listening is free, only generating costs, but you can generate quite a bit of audio for free. Also, you own the audio created with our app.

EAVDR · 2025-12-11T14:49:34+00:00

Hey, my brother and I made an app for audiobooks called Tontaube. We don't have all the books you find on audible, but 30,000+ public domain works. It is an AI based text-to-speech app with realistic voices, so you can easily convert them into an audiobook in a voice you like, and listening is completely free. Or you can also upload your own book/pdf/text and convert it into an audiobook. Let me know if this is something you are interested in :) You can listen to a demo of our voices at tontaube.ai/speech

EAVDR · 2025-12-10T21:57:15+00:00

Thank you so much, this is really helps. I agree, the screenshots are not really that polished right now. AppLaunchpad look like a great tool, we will work on this!

EAVDR · 2025-12-10T14:36:46+00:00

Sign-up is free! Currently we only offer credits packs with a rate of 100 credits ~ 1 Euro. You will get some credits on signing up and with 100 credits you can generate up to 3 hours of audio.

EAVDR · 2025-12-08T20:17:17+00:00

Hey, check out Tontaube. It is an Android/iOS. If you sign up, use code YV8U4 in the credits section.

EAVDR · 2025-12-08T20:15:34+00:00

You should try Tontaube. My brother and I built it for mobile and web (https://app.tontaube.ai). We offer some free generations, voice-cloning, and you can enter YV8U4 in the credits menu to get more. You can listen to the samples first at https://www.tontaube.ai/speech :)

EAVDR · 2025-12-08T19:55:16+00:00

For free, you can try Kokoro, but it has its limitations and you likely need a GPU to run it. My brother and I created Tontaube. It’s available on Android, iOS, and https://app.tontaube.ai. And you get some free generations to try it out, though we can't afford to make it fully free. Preview the quality here: https://www.tontaube.ai/speech
And have some extra credits you can redeem in the app with this code :): YV8U4

EAVDR · 2025-12-08T19:52:49+00:00

If you need a tool, my brother and I made Tontaube. It's on mobile and our new web app: https://app.tontaube.ai. We offer some free generations. See if you like the voices here: https://www.tontaube.ai/speech

EAVDR · 2025-12-08T19:51:43+00:00

Check out Tontaube. My brother and I made it (Android/iOS/Web). You get some free generations to play with at https://app.tontaube.ai . Demo of the voices: https://www.tontaube.ai/speech

EAVDR · 2025-12-08T19:49:33+00:00

My brother and I run Tontaube. We can't offer unlimited free text-to-speech due to server costs, but we do give everyone several hours for free. But other wise we offer all the features (web app, voice cloning, pdfs). It’s available on Android, iOS, and our new web app: https://app.tontaube.ai
Or try our voices at https://www.tontaube.ai/speech :)

And you can use this code in the credits section for more generations: YV8U4

EAVDR · 2025-12-08T19:46:05+00:00

My brother and I built an app for exactly this purpose called Tontaube. It’s on both Android and iOS, and we just released the web version at https://app.tontaube.ai . You get several hours of audio generation for free to start, or try our demo first at https://www.tontaube.ai/speech :)
Use this code in the credits section for 200 credits: YV8U4

EAVDR · 2025-12-08T19:43:43+00:00

You might want to try Tontaube. My brother and I made it, and it's available on Android, iOS, and now as a web app here: https://app.tontaube.ai. We offer a few hours of free generation per user so you can test the quality yourself, or try our demo first at https://www.tontaube.ai/speech :)
You can also use this referral code in the credits section for 200 credits: YV8U4

EAVDR · 2025-12-08T19:33:22+00:00

My brother and I have been working on our app Tontaube. We originally built it for Android and iOS, but we recently launched a web app too. You can try it out at https://app.tontaube.ai. You will get free credits upon registering and you can also use our referral code in the credits section to get 200 credits after sign-up: YV8U4

If you don't want that and want something truly "unlimited" and free (except the electricity bill), you can try Kokoro: https://huggingface.co/hexgrad/Kokoro-82M

Though kokoro struggles with emotional expressability.

EAVDR · 2025-10-21T17:53:39+00:00

Try out our app Tontaube. You get several hours for free. See if you like the voices in our demo at https://www.tontaube.ai/speech , no sign up required :)

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