Chatterbox Turbo TTS Serverless API

Ultra-fast, human-quality TTS with emotional expression.

~13.39s
POST /v2/chatterbox-turbo-tts · submit + poll
 1# pip install "segmind>=1.1.0"
 2# export SEGMIND_API_KEY="YOUR_API_KEY"
 3import segmind
 4
 5# Async (v2): submit to the queue and block until COMPLETED.
 6# run() returns the final result dict (600s deadline, 1.0s poll by default).
 7result = segmind.run(
 8    "chatterbox-turbo-tts",
 9    text="Introducing the AI-enhanced Skyline T-800. [laugh] It's got integrated AI for superior performance. Want to explore pricing?",
10    reference_audio="https://segmind-resources.s3.amazonaws.com/output/70e9a9dd-e0f4-450f-a590-872996b44a01-chatterbox-turbo-input.mp3",
11    temperature=0.7,
12    seed=42,
13    min_p=0,
14    top_p=0.9,
15    top_k=500,
16    repetition_penalty=1.3,
17    norm_loudness=True,
18)
19print(result["status"])                      # COMPLETED
20print(result.get("output"))                  # model output (e.g. media URL)
21print(result["metrics"]["inference_time"])   # server compute seconds
22
23# --- Or submit + poll manually (track request_id, control the cadence) ---
24from segmind import SegmindClient, InferenceFailed, InferenceTimeout
25
26client = SegmindClient()                      # reads SEGMIND_API_KEY
27payload = {
28    "text": "Introducing the AI-enhanced Skyline T-800. [laugh] It's got integrated AI for superior performance. Want to explore pricing?",
29    "reference_audio": "https://segmind-resources.s3.amazonaws.com/output/70e9a9dd-e0f4-450f-a590-872996b44a01-chatterbox-turbo-input.mp3",
30    "temperature": 0.7,
31    "seed": 42,
32    "min_p": 0,
33    "top_p": 0.9,
34    "top_k": 500,
35    "repetition_penalty": 1.3,
36    "norm_loudness": True,
37}
38job = client.submit_async("chatterbox-turbo-tts", **payload)
39print(job.request_id)                         # available immediately
40try:
41    result = job.wait(timeout=600, interval=1.0)
42except InferenceTimeout as e:
43    print("still running:", e.request_id)
44except InferenceFailed as e:
45    print("failed:", e.detail)

API Endpoint

POSThttps://api.segmind.com/v1/chatterbox-turbo-tts

Parameters

reference_audiorequired
string (uri)

Provide a reference audio URL for voice matching. Use a public link for seamless access.

textrequired
string

Enter text to synthesize into speech. Use sound tags like [chuckle] for expression.

min_poptional
number

Set minimum token probability. Higher values filter out unlikely outputs.

Default: 0Range: 0 - 1
norm_loudnessoptional
boolean

Normalize audio to standard loudness. Recommended for consistent volume across outputs.

Default: true
repetition_penaltyoptional
number

Penalty for repeated words. Higher values reduce redundancy in speech.

Default: 1.3Range: 1 - 2
seedoptional
integer

Set random seed for reproducible results. Zero for random, specific value for consistency.

Default: 42
temperatureoptional
number

Adjust creativity and expressiveness in speech. Use lower for consistency, higher for diversity.

Default: 0.7Range: 0.05 - 2
top_koptional
integer

Limit to top K likely tokens. Lower for concise, higher for diverse expressions.

Default: 500Range: 0 - 1000
top_poptional
number

Control randomness via cumulative probability tokens. Lower for predictable, higher for varied outputs.

Default: 0.9Range: 0 - 1

Response Type

Returns: Audio

Asynchronous requests (v2)

Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.

  1. 1
    POST /v2/chatterbox-turbo-tts

    Submitreturns request_id, status_url, response_url

  2. 2
    GET /v2/requests/{id}/status

    Polluntil COMPLETED or FAILED

  3. 3
    GET /v2/requests/{id}

    Resultfinal response body

Status states

QUEUEDAccepted, waiting for a worker
PROCESSINGRunning on a worker
COMPLETEDDone — result body is ready
FAILEDErrored (incl. content/RAI blocks)
  • A FAILED request is served as HTTP 422 — the body still carries the error detail.
  • An unknown or expired request_id returns HTTP 404.
  • Results are retained for 1 hour, then expire.
  • Content / RAI blocks surface as FAILED, not a separate state.
  • Track completion by polling the status endpoint.

Common Error Codes

The API returns standard HTTP status codes. Detailed error messages are provided in the response body.

400

Bad Request

Invalid parameters or request format

401

Unauthorized

Missing or invalid API key

403

Forbidden

Insufficient permissions

404

Not Found

Model or endpoint not found

406

Insufficient Credits

Not enough credits to process request

429

Rate Limited

Too many requests

500

Server Error

Internal server error

502

Bad Gateway

Service temporarily unavailable

504

Timeout

Request timed out