Deepgram Flux TTS API
Deepgram Flux TTS text to speech — natural, expressive English across 36 Flux voices, billed on input length.
Deepgram's text-to-speech model for natural, expressive English speech across the Flux voice catalogue of 36 named voices.
No credit card required. Takes 30 seconds.
Deepgram Flux TTS API pricing
Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated October 23, 2026.
| Billing | Price |
|---|---|
| Rate | $0.0949/1K chars |
| What it costs | Per job |
|---|---|
| Short reply200 characters | $0.019 |
| Blog post narration10,000 characters (~1,600 words) | $0.949 |
| Audiobook chapter100,000 characters | $9.49 |
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Playground coming soon — use the API endpoint directly with your API key.
Deepgram Flux TTS specs
| Provider | Deepgram |
|---|---|
| Model ID | deepgram/flux-tts |
| Endpoint | /v1/media/queue |
| Type | Text to Speech |
| Output formats | mp3 |
| Voices | 36 presets (default flux-alexis-en) |
How to get a Deepgram Flux TTS API key
- 1
Create a free account
Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.
- 2
Create an API key
Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.
- 3
Call Deepgram Flux TTS
Send a request to /v1/media/queue with the x-api-key header and model "deepgram/flux-tts".
- 4
Pay as you go
Usage is billed per request from your balance. Top up any amount; there is no subscription.
Strengths
A full English voice catalogue — enough to give each product, character, or brand its own speaker.
Suited to natural, expressive English speech synthesis.
Canonical `flux-*-en` voice IDs mean the same speaker sounds the same on every request.
The same provider behind Aura-2, on the same media queue.
Quick start
Copy this snippet and start making calls with Deepgram Flux TTS.
// Step 1: Submit job
const res = await fetch('https://api.yepapi.com/v1/media/queue', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "deepgram/flux-tts",
"prompt": "Your package is out for delivery and should arrive between two and four this afternoon.",
"options": {
"voice": "flux-alexis-en"
}
}),
});
const { data } = await res.json();
const jobId = data.jobId;
// Step 2: Poll for result
const status = await fetch(`https://api.yepapi.com/v1/media/status/${jobId}`, {
headers: { 'x-api-key': 'YOUR_API_KEY' },
});
const { data: job } = await status.json();
// job.status: "pending" | "processing" | "completed" | "failed"
// job.result: { text?, image?, audio?, video? }Deepgram Flux TTS vs similar models
Every model below runs on the same API key — switch by changing the model ID.
| Model | Provider | Price |
|---|---|---|
| Deepgram Flux TTS | Deepgram | $0.0949/1K chars |
| Deepgram Aura-2 | Deepgram | $0.0633/1K chars |
| Kokoro 82M | hexgrad | $0.0014/1K chars |
| Fish Audio Drama 3 | Fish Audio | $0.0042/1K chars |
| HeyGen Voice Turbo | HeyGen | $0.0084/1K chars |
| Sesame CSM 1B | Sesame | $0.0148/1K chars |
| Voxtral TTS 3 | Mistral | $0.0302/1K chars |
| MAI-Voice-2.1 Flash | Microsoft | $0.0316/1K chars |
Why use Deepgram Flux TTS through YepAPI?
Deepgram Flux TTS API — expressive English speech
Flux TTS is a text-to-speech model from Deepgram, suited for natural, expressive English speech synthesis across Deepgram's Flux voice catalogue of 36 named voices.
Voices are selected by their canonical Flux identifier, such as `flux-alexis-en`, so the speaker you pick in development is the speaker you ship. Billing is $0.0949 per 1,000 characters of input on the standard media queue.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Deepgram's text-to-speech model for natural, expressive English speech across the Flux voice catalogue of 36 named voices.
Deepgram Flux TTS costs $0.0949/1K chars through YepAPI, billed per request with no monthly fee. For example, a short reply (200 characters) costs about $0.019.
Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for Deepgram Flux TTS and every other model — no separate Deepgram account or waitlist.
New YepAPI accounts in most countries get free signup credit, enough to test Deepgram Flux TTS without a card. After that you pay per request at the rates above — there is no subscription.
Use "deepgram/flux-tts" as the model on /v1/media/queue. The short alias "flux-tts" also works.
Ready to use Deepgram Flux TTS?
$5 free credit on signup. No credit card required. Pay per call.
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