Text-to-speech API
Inworld Text to Speech
Text to speech over a REST API and a WebSocket (TTS-2 and TTS-2 Flash), on pay as you go or in credit plans.
Plans
Values that apply to one plan. "Not stated" means the official pages do not say; it is not an estimate.
| Plan | Price | Included | Extra usage | Concurrency | Rate limit | Buy |
|---|---|---|---|---|---|---|
| On-DemandPay as you go | Not recorded | Not recorded |
Not recorded |
Pricing pageChoose the plan on the page | ||
| CreatorSubscription | $25/month4 |
Not recorded |
Not recorded |
Pricing pageChoose the plan on the page | ||
| BuilderSubscription | $100/month9 |
Not recorded |
Not recorded |
Pricing pageChoose the plan on the page | ||
| DeveloperSubscription | $300/month13 |
Not recorded |
Not recorded |
Pricing pageChoose the plan on the page | ||
| GrowthSubscription | $1,500/month17 |
Not recorded |
Not recorded |
Pricing pageChoose the plan on the page |
Applies to every plan
Recorded for the product or the provider; a plan-level value or a listed exception replaces it.
Collection notes
Plans are the five self-serve columns of the pricing page (On-Demand, Creator, Builder, Developer, Growth); Enterprise is custom. A paid plan's credits are dollars of usage equal to the plan fee, deducted at the tier rate, so the characters a plan covers depend on the model. They are entered at the rate of the TTS-2 model (the dearer of the two); the Flash model covers more for the same credits. Overage is charged at the same rate as the plan. The 70 free minutes of On-Demand are counted at about 1,000 characters a minute, as the page does. The MCP server ships in the Inworld CLI and runs locally.
Sources and notes
Each number points to the provider's own sentence, as it appears on the page on the date shown.
On-Demand Evaluation and prototyping $0 pay as you go TTS-2 $25/1M chars TTS-2 Flash $15/1M chars
How the value follows from the source: TTS-2 at $25 per 1M characters is $0.025 per 1,000 characters; TTS-2 Flash is $15 per 1M.
How the value follows from the source: TTS-2 at $25 per 1M characters.
Creator Content creation and small projects $25 /mo TTS-2 $25 $20/1M chars TTS-2 Flash $15 $10/1M chars
$25 in credits per month Up to 33% off TTS & STT rates
How the value follows from the source: $25 of credits a month at $20 per 1M characters (TTS-2) is 1,250,000 characters.
Overage usage is charged at the same rate as your plan.
How the value follows from the source: The plan rate for TTS-2, $20 per 1M characters.
Builder Popular Growing projects and small teams $100 /mo TTS-2 $25 $17.50/1M chars TTS-2 Flash $15 $9/1M chars
$100 in credits per month Up to 40% off TTS & STT rates
How the value follows from the source: $100 of credits a month at $17.5 per 1M characters (TTS-2) is 5,714,285 characters.
How the value follows from the source: The plan rate for TTS-2, $17.5 per 1M characters.
Developer Production applications $300 /mo TTS-2 $25 $15/1M chars TTS-2 Flash $15 $8/1M chars
$300 in credits per month Up to 47% off TTS & STT rates
How the value follows from the source: $300 of credits a month at $15 per 1M characters (TTS-2) is 20,000,000 characters.
How the value follows from the source: The plan rate for TTS-2, $15 per 1M characters.
Growth Large deployments & compliance $1,500 /mo TTS-2 $25 $12.50/1M chars TTS-2 Flash $15 $7/1M chars
$1,500 in credits per month Up to 53% off TTS & STT rates
How the value follows from the source: $1500 of credits a month at $12.5 per 1M characters (TTS-2) is 120,000,000 characters.
How the value follows from the source: The plan rate for TTS-2, $12.5 per 1M characters.