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Expressive v3: a voice model for your game.

Examples

Real outputs of voice/expressive-v3, each with the input that made it.
Bram, tavern keeper

Words: [warmly] Sit, sit! First mug's on the house. [laughs] The second one... we'll talk about the second one.

The old wizard

Words: [whispering] Come closer, apprentice. [pause] The map was never lost... it was hiding from you. [chuckles softly]

Race announcer

Words: [excited] And they're off! Round three, final lap, and the crowd is on its feet!

Vex, courier

Words: [flat, fast] Package secured. Two minutes out. [pause] Tell the client to stop calling, I'm literally flying.

Best for

  • The default voice model: what voice/default runs today.
  • NPC dialogue with emotion, pauses, and delivery that fits the scene.
  • Multi-character conversations generated in one pass.
  • Placeholder voice-over for cutscenes before recording actors.

Price

$0.08 per 1,000 characters, counted from text. Exact list price: 0.08 USD. No markup: this is the provider’s list price, checked 2026-10-23. 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 with summer 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.
The finished job has 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 in input. The full JSON Schema is inputSchema in GET /v1/models/voice/expressive-v3.

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/expressive-v3. For more, search the public voice library by words, language, gender, age or accent, each with a sample: GET /v1/voices?model=voice/expressive-v3&search=old+wizard (signed in).

For agents

This page as Markdown: https://docs.summerengine.com/api/models/voice/expressive-v3.md. The live record with the JSON Schema: GET https://www.summerengine.com/v1/models/voice/expressive-v3, public, no sign-in.