minimax/voice-design
Voice Design by MiniMax - convert text to natural-sounding speech with AI. Supports multiple voices, languages, emotions, and speaking styles for content creation and accessibility.
Example output — click Run to generate your own
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
https://api.sandbase.ai/v1/runminimax/voice-designInput Schema
2 parameters · 1 required · 1 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
prompt | string | Required | Voice description prompt for generating a personalized voice · Max length: 2000 |
preview_text | string | Optional | Text for audio preview. Limited to 500 characters. A fee of $30 per 1M characters will be charged for the generation of the preview audio. · Max length: 500 |
Output Schema
| Field | Type | Description |
|---|---|---|
id | string | Unique identifier for the generation task |
status | string | Task status: pending, running, completed, failed, timeout |
model | string | Model used for the generation |
outputs | array | Array of output items |
outputs[].url | string | URL of the generated artifact |
outputs[].content_type | string | MIME type (e.g. image/png, video/mp4) |
error | object | null | Error details if failed, null on success |
error.type | string | Machine-readable error type code |
error.message | string | Human-readable error description |
Async Workflow
This model uses asynchronous execution. Submit a request and poll for the result.
- Submit — POST to /v1/run, receive an
id - Poll — GET /v1/run/{id} until status is
completed,failed, ortimeout - Retrieve — Read
outputsfrom the completed response
Code Examples
Ready-to-run snippets
# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "minimax/voice-design",
"prompt": "Bubbly and excitable female pop star interviewee, youthful, slightly breathless, and very enthusiastic",
"preview_text": "Oh my gosh, hi. It's like so amazing to be here. This new endpoint just dropped on fal and the results have been like totally incredible. Use it now, It's gonna be like epic!"
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
Voice Design
Voice Design is built for expressive speech synthesis, with this exact route focused on voice and delivery control. Voice Design by MiniMax - convert text to natural-sounding speech with AI. Supports multiple voices, languages, emotions, and speaking styles for content creation and accessibility. It is designed for production workflows that need a clearly scoped media operation instead of a generic assistant response, preserving the supplied direction while returning an artifact ready for review, iteration, or downstream assembly.
The request surface keeps creative direction and delivery choices explicit through prompt, voice_id, preview_text, sync_mode, safety_tolerance. Teams can lock source material, describe the intended result, choose supported output controls, and rerun the same request structure across variations. This makes experiments easier to compare and larger pipelines easier to operate without hiding important decisions inside an opaque preset.
Highlights
- Voice And Delivery Control. The
minimax/voice-designroute is dedicated to voice and delivery control, keeping inputs and outputs matched to this operation. - Multilingual Spoken Content. Within
minimax/voice-design, documented prompt and media controls direct multilingual spoken content while keeping the brief close to the result. - Natural Long-Form Narration. The
minimax/voice-designresult provides natural long-form narration in a machine-consumable form for review and downstream production. - Route-specific control. For
minimax/voice-design, documented controls includeprompt,voice_id,preview_text,sync_mode,safety_tolerance, defining the supported variation space for this exact route.
Pricing
| Configuration | Price |
|---|---|
| Voice design base | $3.000 |
| Per started 1,000 prompt characters | +$0.030 |
When to Use
| Scenario | Why it fits |
|---|---|
| Choose this route | When the deliverable is specifically voice and delivery control, not a neighboring generation or editing task. |
| Production iteration | When creative teams need repeatable multilingual spoken content with an explicit request payload. |
| Automated pipelines | When natural long-form narration must flow into review, storage, compositing, or publishing. |
| Controlled variations | When a stable brief should be rerun while changing only documented inputs. |
| Prototype to scale | When the same minimax/voice-design contract should serve a single experiment and a larger batch later. |
Prompt Guide
Lead with the subject or source, then state the transformation, important spatial or temporal details, style, and finish. Supply only documented fields, keep media URLs reachable, and vary one control at a time when comparing outputs.
{
"prompt": "A directed creative request with subject, setting, style, motion, and finish."
}
Technical Specs
| Property | Value |
|---|---|
| Model ID | minimax/voice-design |
| Required inputs | prompt |
prompt | string |
voice_id | string |
preview_text | string |
sync_mode | boolean; default: false |
safety_tolerance | string; default: 6 |
Related Models
minimax/speech/2.6/hdminimax/speech/2.6/turbo