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Inworld TTS-2 Flash

inworld/tts-2-flash

Fastest and cheapest model in Inworld's TTS-2 family, launched August 9, 2026 with a quoted 20 ms P90 time to first audio and TTS-2's language coverage and instant voice cloning, but no natural-language steering.

API
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "inworld/tts-2-flash",
  "input": "Make every word count.",
  "voice": "auto",
  "response_format": "mp3"
}' --output speech.mp3
Input Price
$12.75 / 1M characters
Output Price
—
Input
Text
Output
Audio

Capabilities

Explore what Inworld TTS-2 Flash supports, then use the API section for a request tailored to this model.

BatchStreamVoices

Languages

Multilingual

Model Information

Provider
Inworld AI
Product
Text-to-Speech
Release Date
Aug 9, 2026
Data Policy
Not specified
Region
US
Input
Text
Output
Audio
Provider Documentation

Playground

Try Inworld TTS-2 Flash by Inworld AI. Requests use the selected workspace’s credits and API pricing.

Inworld TTS-2 FlashCredits —
Inworld TTS-2 Flash
⌘ / Ctrl + Enter to send

Providers

Compare available endpoints, pricing, and context limits for Inworld TTS-2 Flash.

ProviderContextOutputInput PriceOutput PriceEndpoint
Inworld AINot specifiedAudio$12.75 / 1M characters—
inworld/tts-2-flash:inworld

Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max input chars2000
Max chars2000
Formatswav, mp3

Performance

Status

Current catalog availability. Your workspace’s access is checked separately before a request runs.

Getting Started

Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.

API
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "inworld/tts-2-flash",
  "input": "Make every word count.",
  "voice": "auto",
  "response_format": "mp3"
}' --output speech.mp3
Read the Endpoint Reference

Request Parameters

Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.

ParameterDetails
modelinworld/tts-2-flash — Required model identifier.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max input chars2000
Max chars2000
Formatswav, mp3

Similar Models

Explore more text-to-speech and compare their capabilities.

ModelContextInput PriceOutput Price
Inworld TTS-2Inworld AINot specified$21.25 / 1M characters—
Inworld TTS-1.5 MaxInworld AINot specified$21.25 / 1M characters—
Inworld TTS-1.5 MiniInworld AINot specified$12.75 / 1M characters—
Sonic 3.6CartesiaNot specified$38.25 / 1M characters—
Sonic 3.6 (2026-08-27)CartesiaNot specified$38.25 / 1M characters—
tts-rt-v2SonioxNot specified$11.985 / 1M characters—
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