Now Generally Available

Text-to-speech API

Q: How is usage calculated?

Usage is calculated based on the number of characters sent to the API. Whitespace and SSML tags are not counted. One API call with 500 characters counts as 500 characters regardless of the voice or language used.

Q: Can I switch plans at any time?

Yes. You can upgrade or downgrade your plan at any time from the console. When upgrading, you'll be charged a prorated amount. When downgrading, the change takes effect at the start of your next billing cycle.

Q: What payment methods do you accept?

We accept all major credit and debit cards (Visa, Mastercard, American Express) as well as ACH bank transfers for enterprise plans. All payments are processed securely through Stripe.

Q: Is there a long-term commitment?

No. Pay-as-you-go plans are month-to-month with no commitment. Enterprise plans can be structured as annual agreements with volume discounts. You can cancel at any time.

Q: What happens if I exceed my plan limits?

On the free tier, requests will be rate-limited once you reach 10,000 characters. On pay-as-you-go, you'll be charged the per-character rate for any usage beyond your included allocation. We'll notify you as you approach your limits.

The most natural-sounding text-to-speech API. Build voice experiences with sub-300ms latency, 50+ languages, and 1,000+ voices.

Get API Key — Free Read the Docs

<300ms

First-byte latency

50+

Languages

1,000+

Voices

99.9%

Uptime SLA

Built for developers

Customizability

Fine-tune every aspect of voice output — speed, pitch, emotion, pauses, and pronunciation — for results that match your exact needs.

Easy Migration

Drop-in compatible with existing TTS APIs. Switch to Speechify with minimal code changes and immediate quality improvements.

Emotional Control

Go beyond flat narration. Our models understand context and deliver speech with natural emotion — happy, sad, excited, calm, and more.

1000+ Voices

Choose from a vast library of pre-built voices across accents, ages, and styles — or clone your own voice in seconds.

Start building in minutes

Get your API key and make your first request in under 5 minutes. No credit card required.

Create a free account and get your API key

Make your first API call to generate speech

Integrate into your app with our SDKs and documentation

Get API Key — Free Quickstart Guide

bash

curl -X POST https://api.speechify.ai/v1/audio/speech \
  -H "Authorization: Bearer $SPEECHIFY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "input": "Hello, world!",
    "voice_id": "george",
    "audio_format": "mp3"
  }'

Use cases

Conversational AI

Power chatbots, virtual assistants, and AI agents with voices that sound human. Sub-300ms latency for real-time conversations.

Voiceovers & Content

Create professional voiceovers for videos, podcasts, and marketing content at scale — without booking a studio.

AI Narration

Transform articles, books, and documents into lifelike audio. The same technology behind the Speechify app, now in your product.

Simple, transparent pricing

Start free, scale as you grow. No hidden fees, no surprises.

Free

$0 /month

API access with limited features, perfect for small projects or testing.

50,000 characters
100 minutes of Text-to-Speech
250ms latency
50+ languages
1,000+ voices
SSML support
JavaScript and Python SDKs
SOC2 certified

Get Started

Pay-As-You-Go

$10 /1M chars

Unlimited access to our API. No commitments, no overages.

Everything in Free +
Unlimited characters
2,000 minutes of Text-to-Speech
Voice cloning included
20x cheaper than competitors
Scales to millions of concurrent calls

Start Building

Enterprise

Custom

Tailored solutions with flexible pricing for businesses with unique needs.

Everything in Free +
Custom terms & DPA/SLAs
Bespoke voice cloning & dubbing
Multiple seats
Priority support
$5,000 annual commitment

Let's Talk

Billing questions

How is usage calculated?

Usage is calculated based on the number of characters sent to the API. Whitespace and SSML tags are not counted. One API call with 500 characters counts as 500 characters regardless of the voice or language used.

Can I switch plans at any time?

Yes. You can upgrade or downgrade your plan at any time from the console. When upgrading, you'll be charged a prorated amount. When downgrading, the change takes effect at the start of your next billing cycle.

What payment methods do you accept?

We accept all major credit and debit cards (Visa, Mastercard, American Express) as well as ACH bank transfers for enterprise plans. All payments are processed securely through Stripe.

Is there a long-term commitment?

No. Pay-as-you-go plans are month-to-month with no commitment. Enterprise plans can be structured as annual agreements with volume discounts. You can cancel at any time.

What happens if I exceed my plan limits?

On the free tier, requests will be rate-limited once you reach 10,000 characters. On pay-as-you-go, you'll be charged the per-character rate for any usage beyond your included allocation. We'll notify you as you approach your limits.

Need custom volume or on-premise deployment?

We offer dedicated infrastructure, custom model training, and enterprise-grade security for teams at scale.

Contact sales