Speech 02 HD | Realistic Voice & TTS API

MiniMax Speech-02-HD

MiniMax Speech-02-HD is a high-definition text-to-speech (TTS) model that brings your words to life with natural pronunciation and studio-grade clarity. Perfect for creators, educators, and developers, it supports multi-lingual voices, flexible speed / volume / pitch controls, and delivers audio that sounds as if recorded by a real human voice actor. 🎧

🌟 Why it sounds great

🎵 High-definition synthesis: captures human-like tone, rhythm, and emotional nuance.
🌍 Multi-lingual support: speaks English, Chinese, Japanese, Korean, Spanish, and more — with accent-aware precision.
🗣️ Clear articulation: crisp and natural delivery, free from robotic noise or digital distortion.
🎚️ Adjustable parameters: control speed, volume, and pitch to match your desired energy and mood.
👥 Multiple voice options: choose from a diverse library of professional male, female, and regional voices.
⚡ Real-time streaming capabilities: generate and play audio as it’s being synthesized, enabling low-latency experiences for live applications.

⚙️ Limits and Performance

🧾 Max input length: up to 10,000 characters per request
⚡ Processing speed: around 1–2 seconds of real time per second of audio
🎧 Output format: MP3 or WAV
🌐 Languages: English, Chinese, Japanese, Korean, Spanish, and more

For the full multilingual voice list, see this document.

💰 Pricing

Your request will cost $0.05 per 1000 characters.

🚀 How to Use

✍️ Enter or upload your text (≤10,000 characters).
🧠 Choose your voice ID and language_boost.
🎚️ Adjust speed, volume, and pitch if needed.
▶️ Click Generate Audio — preview or download your file in MP3/WAV/PCM/FLAC, or use streaming mode for instant real-time playback.

💡 Pro Tips for Best Quality

Use short sentences for smoother rhythm.
For narration, try a slightly slower speed and lower pitch.
Include punctuation — it helps the voice breathe naturally.
Choose HD voices for podcasts, ads, or commercial projects.
Use streaming mode for interactive or live-response scenarios.

📝 Notes

The generation time will also depends on the selections you choose, like bitrate and channel.
You can also find some guidance in this article: Build your digital human.

Speech 02 Hd API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/minimax/speech-02-hd with your input as JSON. The endpoint returns a prediction id. Start polling the result endpoint around every 2 seconds, increase the interval for long-running tasks, and stop on any terminal status. On completed, read URLs from data.outputs. Examples for Speech 02 Hd below.

HTTP example

# Submit the prediction
curl --fail-with-body --connect-timeout 10 --max-time 60 \
  -X POST "https://api.wavespeed.ai/api/v3/minimax/speech-02-hd" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "speed": 1,
    "volume": 1,
    "pitch": 0,
    "emotion": "happy",
    "english_normalization": false,
    "enable_sync_mode": false
}'

# Wait at least 2 seconds, then poll. Safe GET requests may be retried.
curl --fail-with-body --connect-timeout 10 --max-time 30 \
  --retry 4 --retry-all-errors --retry-delay 1 \
  -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# Start at 2 seconds and increase the interval for long-running tasks.
# Stop on completed, failed, cancelled, or timeout.

Node.js example

// npm install wavespeed
const { Client } = require('wavespeed');

const apiKey = process.env.WAVESPEED_API_KEY;
if (!apiKey) throw new Error('Set WAVESPEED_API_KEY');
const client = new Client(apiKey);

try {
  const result = await client.run("minimax/speech-02-hd", {
        "speed": 1,
        "volume": 1,
        "pitch": 0,
        "emotion": "happy",
        "english_normalization": false,
        "enable_sync_mode": false
}, {
    timeout: 3600,
    pollInterval: 2.0,
  });
  console.log(result.outputs);
} catch (error) {
  console.error('Generation failed:', error);
  process.exitCode = 1;
}

Python example

# pip install wavespeed
import os
from wavespeed import Client

client = Client(api_key=os.environ["WAVESPEED_API_KEY"])

try:
    output = client.run(
        "minimax/speech-02-hd",
        {
    "speed": 1,
    "volume": 1,
    "pitch": 0,
    "emotion": "happy",
    "english_normalization": false,
    "enable_sync_mode": false
},
        timeout=3600.0,
        poll_interval=2.0,
    )
    print(output["outputs"])
except Exception as error:
    raise SystemExit(f"Generation failed: {error}") from error

Speech 02 Hd API — Frequently asked questions

What is the Speech 02 Hd API?

Speech 02 Hd is a MiniMax model for audio generation, exposed as a REST API on WaveSpeedAI. Minimax Speech 02 HD is Minimax's high-definition text-to-speech model delivering clear HD voices; pricing $0.05 per 1,000 characters. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Speech 02 Hd API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID. Poll the result endpoint starting around every 2 seconds, increase the interval for long-running tasks, and stop on any terminal status. The playground generates production-oriented Python, JavaScript, and cURL examples with timeouts, transient-error handling, and safe GET retries. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/minimax/minimax-speech-02-hd.

How much does Speech 02 Hd cost per run?

Speech 02 Hd starts at $0.050 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Speech 02 Hd accept?

Key inputs: `bitrate`, `channel`, `emotion`, `enable_sync_mode`, `english_normalization`, `format`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/minimax/minimax-speech-02-hd.

How long does Speech 02 Hd take to generate?

Average end-to-end generation time on WaveSpeedAI is around 8 seconds per request — measured across recent runs. Queue time scales with global demand; live status is visible in the prediction record.

Can I use Speech 02 Hd outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (MiniMax). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

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