
Output
audio
Example prompt
Sector 7 is offline. All units, initiate evacuation protocol. You have ninety seconds to reach the emergency pods.Try this prompt →
LLM-ready
API & LLM schema
Exact request contract for this model. Agents can fetch it from /api/v1/models?id=fal-ai/inworld-tts.
POST
/api/v1/generate9 fields · 2 required| Field | Type | Requirement | Contract |
|---|---|---|---|
model_id | constant | Required | ArtEmotion model identifier. |
extra | object | Optional | Model-specific settings may also be nested here. |
max_credits | number | Optional | Reject before submission if the estimated list price exceeds this cap. · Range: 1–… |
webhook_url | string | Optional | Format: uri |
webhook_secret | string | Optional | Optional model input. |
folder_id | string | Optional | Optional model input. |
prompt | string | Required | Optional model input. |
voice | string | Optional | Voice to use for synthesis. Language is determined by the voice — pick a non-English voice to speak in that language. · Allowed: Abby (en), Alex (en), Amina (en), Anjali (en), Arjun (en), Ashley (en), Blake (en), Brian (en), Callum (en), Carter (en), Celeste (en), Chloe (en), Claire (en), Clive (en), Craig (en), Darlene (en), Deborah (en), Dennis (en), Derek (en), Dominus (en), Edward (en), Elizabeth (en), Elliot (en), Ethan (en), Evan (en), Evelyn (en), Gareth (en), Graham (en), Grant (en), Hades (en), Hamish (en), Hana (en), Hank (en), Jake (en), James (en), Jason (en), Jessica (en), Julia (en), Kayla (en), Kelsey (en), Lauren (en), Liam (en), Loretta (en), Luna (en), Malcolm (en), Mark (en), Marlene (en), Miranda (en), Mortimer (en), Nate (en), Oliver (en), Olivia (en), Pippa (en), Pixie (en), Priya (en), Ronald (en), Rupert (en), Saanvi (en), Sarah (en), Sebastian (en), Serena (en), Shaun (en), Simon (en), Snik (en), Tessa (en), Theodore (en), Timothy (en), Tyler (en), Victor (en), Victoria (en), Veronica (en), Vinny (en), Wendy (en), Nour (ar), Omar (ar), Jing (zh), Xiaoyin (zh), Xinyi (zh), Yichen (zh), Erik (nl), Katrien (nl), Lennart (nl), Lore (nl), Alain (fr), Étienne (fr), Hélène (fr), Mathieu (fr), Johanna (de), Josef (de), Oren (he), Yael (he), Manoj (hi), Riya (hi), Gianni (it), Orietta (it), Asuka (ja), Satoshi (ja), Hyunwoo (ko), Minji (ko), Seojun (ko), Yoona (ko), Szymon (pl), Wojciech (pl), Heitor (pt), Maitê (pt), Dmitry (ru), Elena (ru), Nikolai (ru), Svetlana (ru), Diego (es), Lupita (es), Miguel (es), Rafael (es) · Default: Craig (en) |
sample_rate_hertz | number | Optional | Audio sample rate of the output file. · Allowed: 48000, 40000, 32000, 24000, 16000, 8000 · Default: 48000 |
Minimal request example
{
"model_id": "fal-ai/inworld-tts",
"prompt": "Sector 7 is offline. All units, initiate evacuation protocol. You have ninety seconds to reach the emergency pods."
}Raw JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://www.artemotion.ai/api/v1/models?id=fal-ai%2Finworld-tts",
"title": "Inworld TTS 1.5 Max generation request",
"description": "Request body accepted by POST /api/v1/generate for fal-ai/inworld-tts.",
"type": "object",
"properties": {
"model_id": {
"type": "string",
"const": "fal-ai/inworld-tts",
"description": "ArtEmotion model identifier."
},
"extra": {
"type": "object",
"additionalProperties": true,
"description": "Model-specific settings may also be nested here."
},
"max_credits": {
"type": "number",
"minimum": 1,
"description": "Reject before submission if the estimated list price exceeds this cap."
},
"webhook_url": {
"type": "string",
"format": "uri",
"maxLength": 2048
},
"webhook_secret": {
"type": "string",
"maxLength": 512
},
"folder_id": {
"type": "string"
},
"prompt": {
"type": "string"
},
"voice": {
"title": "Voice",
"description": "Voice to use for synthesis. Language is determined by the voice — pick a non-English voice to speak in that language.",
"default": "Craig (en)",
"type": "string",
"enum": [
"Abby (en)",
"Alex (en)",
"Amina (en)",
"Anjali (en)",
"Arjun (en)",
"Ashley (en)",
"Blake (en)",
"Brian (en)",
"Callum (en)",
"Carter (en)",
"Celeste (en)",
"Chloe (en)",
"Claire (en)",
"Clive (en)",
"Craig (en)",
"Darlene (en)",
"Deborah (en)",
"Dennis (en)",
"Derek (en)",
"Dominus (en)",
"Edward (en)",
"Elizabeth (en)",
"Elliot (en)",
"Ethan (en)",
"Evan (en)",
"Evelyn (en)",
"Gareth (en)",
"Graham (en)",
"Grant (en)",
"Hades (en)",
"Hamish (en)",
"Hana (en)",
"Hank (en)",
"Jake (en)",
"James (en)",
"Jason (en)",
"Jessica (en)",
"Julia (en)",
"Kayla (en)",
"Kelsey (en)",
"Lauren (en)",
"Liam (en)",
"Loretta (en)",
"Luna (en)",
"Malcolm (en)",
"Mark (en)",
"Marlene (en)",
"Miranda (en)",
"Mortimer (en)",
"Nate (en)",
"Oliver (en)",
"Olivia (en)",
"Pippa (en)",
"Pixie (en)",
"Priya (en)",
"Ronald (en)",
"Rupert (en)",
"Saanvi (en)",
"Sarah (en)",
"Sebastian (en)",
"Serena (en)",
"Shaun (en)",
"Simon (en)",
"Snik (en)",
"Tessa (en)",
"Theodore (en)",
"Timothy (en)",
"Tyler (en)",
"Victor (en)",
"Victoria (en)",
"Veronica (en)",
"Vinny (en)",
"Wendy (en)",
"Nour (ar)",
"Omar (ar)",
"Jing (zh)",
"Xiaoyin (zh)",
"Xinyi (zh)",
"Yichen (zh)",
"Erik (nl)",
"Katrien (nl)",
"Lennart (nl)",
"Lore (nl)",
"Alain (fr)",
"Étienne (fr)",
"Hélène (fr)",
"Mathieu (fr)",
"Johanna (de)",
"Josef (de)",
"Oren (he)",
"Yael (he)",
"Manoj (hi)",
"Riya (hi)",
"Gianni (it)",
"Orietta (it)",
"Asuka (ja)",
"Satoshi (ja)",
"Hyunwoo (ko)",
"Minji (ko)",
"Seojun (ko)",
"Yoona (ko)",
"Szymon (pl)",
"Wojciech (pl)",
"Heitor (pt)",
"Maitê (pt)",
"Dmitry (ru)",
"Elena (ru)",
"Nikolai (ru)",
"Svetlana (ru)",
"Diego (es)",
"Lupita (es)",
"Miguel (es)",
"Rafael (es)"
]
},
"sample_rate_hertz": {
"title": "Sample Rate",
"description": "Audio sample rate of the output file.",
"default": "48000",
"type": "number",
"enum": [
48000,
40000,
32000,
24000,
16000,
8000
]
}
},
"required": [
"model_id",
"prompt"
],
"additionalProperties": false
}FAQ
How much does Inworld TTS 1.5 Max cost on ArtEmotion?
Credit-based pricing. You pay in ArtEmotion credits — every plan and top-up converts USD to credits at a fixed rate.
Do I get my credits back if Inworld TTS 1.5 Max fails?
Yes — failed generations are never charged. The credits are released back to your balance automatically.
Can I call Inworld TTS 1.5 Max from the API?
Yes. Use POST /api/v1/generate with model_id: "fal-ai/inworld-tts". See the API reference for the full schema.
Where are my generations stored?
Every output is saved to your personal Library. You can export or delete everything any time from Privacy & deletion.
Ready to generate with Inworld TTS 1.5 Max?
Start now →No commitment. New accounts get 50 free credits on signup. See pricing.