Feature

Text-to-Speech API

In development — early access open

A public VoisLabs API is not available yet, and we would rather say so than take your integration time on a promise. Here is the honest position. Today, you can generate studio-quality audio in 11 languages through the VoisLabs app and download it as MP3 or WAV — which is enough for IVR prompt libraries, audiobook chapters and any workflow where the text does not change on every request. What is in development is VoisLabs Agents: a REST API with workspace-scoped keys, idempotent requests, signed webhook events for call and generation outcomes, and a sandbox environment, aimed first at Indian voice-agent and telephony use cases on Exotel. We are onboarding a small set of design partners rather than opening self-serve, so that Hindi, Indian English and Hinglish quality is proven on real traffic before we scale it. If you want an API key when the first cohort opens, get in touch and tell us what you are building — the use cases we hear shape what ships first.

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PPooja SharmaCo-founder, VoisLabs
LinkedInUpdated May 2026
Text-to-Speech API
A public VoisLabs API is not available yet, and we would rather say so than take your integration time on a promise. Here is the honest position. Today, you can generate studio-quality audio in 11 languages through the VoisLabs app and download it as MP3 or WAV — which is enough for IVR prompt libraries, audiobook chapters and any workflow where the text does not change on every request. What is in development is VoisLabs Agents: a REST API with workspace-scoped keys, idempotent requests, signed webhook events for call and generation outcomes, and a sandbox environment, aimed first at Indian voice-agent and telephony use cases on Exotel. We are onboarding a small set of design partners rather than opening self-serve, so that Hindi, Indian English and Hinglish quality is proven on real traffic before we scale it. If you want an API key when the first cohort opens, get in touch and tell us what you are building — the use cases we hear shape what ships first.

Available today: generate and download

Produce audio in 11 languages in the app and export MP3 or WAV. No API needed for prompt libraries or batch content that changes rarely.

11 languages

Hindi, Tamil, Telugu, Bengali, Kannada, Malayalam, Marathi, Punjabi, Gujarati, Assamese and Indian English.

Planned: workspace API keys

Scoped keys with separate sandbox and live credentials, and idempotency keys so a retried request never double-charges or double-generates.

Planned: signed webhooks

Signed event envelopes verified against the raw request body, with retries and de-duplication handled for you rather than left as an exercise.

Planned: telephony-first design

Built for Indian voice-agent workloads on Exotel, including real-time media, rather than retrofitted from a batch TTS endpoint.

Same credits, no separate plan

API usage will draw on the same one-time credit packs as the app. No parallel subscription to reason about.

How It Works

1

Use the app today

Generate your audio in VoisLabs and download MP3 or WAV. This covers most prompt and batch-content workflows without any integration work.

2

Tell us what you are building

Get in touch with your use case. Early-access cohorts are prioritised by what we can support well, not by signup order.

3

Integrate when your cohort opens

You get sandbox credentials and the OpenAPI contract, so you can build against a stable interface before going live.

Frequently Asked Questions

Can I call a VoisLabs API today?
No. There is no public API and no API-key issuance yet — if you have seen that claimed elsewhere on this site, it was out of date and we have corrected it. Everything in the product today runs through the web app, which authenticates with a normal user session rather than an API key.
What can I do in the meantime?
Generate your audio in the app and download MP3 or WAV. For IVR prompts, audiobook chapters, e-learning modules and notification banks, the text usually changes rarely enough that generating once and storing the files works well. The API mainly matters when audio must be produced per request.
When will the API be available?
It is in active development against a locked OpenAPI contract, and we are onboarding design partners before self-serve. We are deliberately not publishing a public date — an API that ships late is a nuisance, but an API that ships broken and takes your production traffic down with it is worse.
What will the API cover first?
The first contract covers voice agents and telephony: agents, calls, campaigns, contacts, consent and suppression, knowledge sources, tools, webhooks, billing, API keys and analytics. Standalone batch TTS generation is part of the same platform rather than a separate product.
How will API usage be billed?
Through the same one-time credit packs as the web app, metered on audio generated rather than on request count. Credit packs start at ₹299. Enterprise terms with committed-usage discounts will be available for high-volume accounts.
Will there be an SDK?
The contract is OpenAPI 3.1, so you can generate a client in most languages from the spec on day one, and a Postman collection is part of the onboarding pack. Hand-maintained SDKs will follow the languages design partners actually ask for.
1M+ generations11 languages10,000+ creators

Building something that needs an Indian-language voice API?

Tell us what you are building and we will add you to the early-access list.

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