# ElevenLabs vs. Microsoft Azure AI Speech

The best way to compare ElevenLabs vs. Microsoft Azure AI Speech: audio samples, features, plans, pricing, and more.

# Live Demo

- Non-Fiction
- Fiction
- News
- Blog
- Conversation

## Voice Options

**Voice Selection**  
- Sierra  
- Autumn  
- Melody  
- Hannah  
- Emily  
- Ivy  
- Kaitlyn  
- Luna  
- Willow  
- Lauren  
- Sierra  
- Noah  
- Jasper  
- Caleb  
- Ronan  
- Ethan  
- Daniel  
- Zane  
- Rowan

## Language Options

- 🇺🇸 US English  
- 🇬🇧 UK English  
- 🇨🇳 Mandarin Chinese  
- 🇮🇳 Hindi  
- 🇪🇸 Spanish  
- 🇧🇷 Portuguese  
- 🇯🇵 Japanese  
- 🇫🇷 French  
- 🇮🇹 Italian

## Format Options

- Standard  
- MP3  
- Phone Call  
- PCM µ-law

### Synthesize Settings

- Speed: 1.0  
- Pitch:  
- Bitrate: 192k

### ElevenLabs
[Text to speech API - ElevenLabs](https://elevenlabs.io/)  
Cutting-edge AI voice synthesis, transforming text into realistic speech with emotion and intonation.

### Microsoft Azure AI Speech
[Text to speech API - Microsoft Azure AI Speech](https://azure.microsoft.com/en-us/products/ai-services/ai-speech/)  
Enables your applications, tools, or devices to convert text into human-like synthesized speech.

### Voice Quality

#### ElevenLabs Samples
- Mean Opinion Score
    - Fiction: 4.54
    - Non-Fiction: 4.19
    - Conversation: 4.22

#### Microsoft Azure AI Speech Samples
- Mean Opinion Score
    - Fiction: 3.69
    - Non-Fiction: 3.13
    - Conversation: 3.18

Mean Opinion Score (MOS) is a numerical measure that represents the perceived quality of audio samples, commonly used in evaluating text-to-speech systems. The score ranges from 1 to 5, with 1 indicating poor quality and 5 signifying excellent quality.

### Voice Quality - Conclusion

- Based on the Mean Opinion Scores provided, **ElevenLabs** demonstrates superior voice quality across fiction, non-fiction, and conversation categories when compared to **Microsoft Azure AI Speech**.
- **ElevenLabs**' scores are consistently above 4.0, indicating a higher level of realism and user satisfaction in its voice synthesis.
- In contrast, **Microsoft Azure AI Speech** scores are notably lower, suggesting that its synthesized speech may not be as lifelike or well-received by users.

### Features

#### ElevenLabs Features
- Voice Cloning  
- Multi-lingual  
- Per-word Timestamps  
- Pitch Control  
- Speed Control  
- Phone Formats (e.g. pcm_mulaw)

#### Microsoft Azure AI Speech Features
- Voice Cloning  
- Multi-lingual  
- Per-word Timestamps  
- Pitch Control  
- Speed Control  
- Phone Formats (e.g. pcm_mulaw)

### Features - Conclusion

- Both **ElevenLabs** and **Microsoft Azure AI Speech** offer voice cloning and multi-lingual capabilities, catering to a wide range of voice synthesis needs.
- However, **Microsoft Azure AI Speech** provides more advanced features such as per-word timestamps, pitch control, and speed control, which can offer users greater flexibility and customization in their text-to-speech projects.

### Pricing & Plans

#### ElevenLabs Pricing
- Free: $0/mo, 10,000 characters  
- Starter: $5/mo, 30,000 characters  
- Creator: $22/mo, 100,000 characters  
- Independent Publisher: $99/mo, 500,000 characters  
- Growing Business: $330/mo, 2M characters

#### Microsoft Azure AI Speech Pricing
- Free: $0/mo, 5 hours of audio (~225K chars)  
- Pay As You Go: $15 per 1M characters

### Pricing & Plans - Conclusion

- Based solely on pricing, **Microsoft Azure AI Speech** offers a more cost-effective solution.

### Customer Reviews

#### ElevenLabs Reviews
- Score: 4.4 out of 5  
- Average of 331 ratings from leading review sites.

#### Microsoft Azure AI Speech Reviews
- Score: 4.2 out of 5  
- Average of 88 ratings from leading review sites.

### Summary
- **ElevenLabs** offers superior voice quality with higher Mean Opinion Scores across various categories, making it a strong choice for users prioritizing realism in voice synthesis.
- However, **Microsoft Azure AI Speech** provides a more cost-effective and flexible solution, with advanced features and a pricing model that caters to a broader range of users.

Ultimately, the choice between **ElevenLabs** and **Microsoft Azure AI Speech** depends on the user's specific needs for voice quality, feature set, and budget considerations.