Examples
Real outputs ofvoice/inworld-tts-1.5-max, each with the input that made it.
Best for
- NPC voices for large casts, one voice per character.
- Fantasy and villain voices such as Hades and Dominus.
- High volume dialogue where cost per line matters.
Price
$0.01 per 1,000 characters, counted fromtext. Exact list price: 0.01 USD.
No markup: this is the provider’s list price, checked 2026-09-26. A failed job costs nothing. Get the exact price of one request, free and without a key, from POST /v1/estimate.
Example call
Sign in once withsummer login; over HTTP, send Authorization: Bearer $SUMMER_TOKEN after export SUMMER_TOKEN=$(summer token) (sign-in). This job comes back done in the same call, with the file ready to download.
state "done" and result.assets: one entry per file, each with assetId, fileUrl (a Summer URL) and thumbnailUrl. Download the file into your project, or import it in Summer Engine by its asset id.
Input
Send these fields ininput. The full JSON Schema is inputSchema in GET /v1/models/voice/inworld-tts-1.5-max.
Voices
voiceId is optional: without it the model uses its default voice. These are Summer’s curated voices; the live list is voices in GET /v1/models/voice/inworld-tts-1.5-max. For more, search the public voice library by words, language, gender, age or accent, each with a sample: GET /v1/voices?model=voice/inworld-tts-1.5-max&search=old+wizard (signed in).
All 113 voices
All 113 voices
Related models
Expressive v3
Multilingual v2
HeyGen Voice Turbo
HeyGen Voice
For agents
This page as Markdown: https://docs.summerengine.com/api/models/voice/inworld-tts-1-5-max.md. The live record with the JSON Schema:GET https://www.summerengine.com/v1/models/voice/inworld-tts-1.5-max, public, no sign-in.

