Last updated: 28 June 2026
OpenAI vs Azure: TTS Pricing Comparison
OpenAI is 6% cheaper starting at $0.015/1k chars. Here's the full breakdown of pricing, quality, latency, and language support.
Price Comparison
| Characters | OpenAI tts-1 | OpenAI tts-1-hd | OpenAI gpt-4o-mini-tts | Azure Neural Standard |
|---|---|---|---|---|
| 10,000 | $0.15 | $0.30 | $0.15 | $0.16 |
| 100,000 | $1.50 | $3.00 | $1.50 | $1.60 |
| 1,000,000 | $15.00 | $30.00 | $15.00 | $16.00 |
Feature Comparison
OpenAI
Best for: Developers already using the OpenAI ecosystem who want straightforward TTS at scale.
Strengths
- ✓ Simple API integration
- ✓ Multiple quality tiers
- ✓ Good language support
- ✓ Steerable prosody (gpt-4o-mini-tts)
Azure
Best for: Enterprise applications needing the widest voice variety and Microsoft ecosystem integration.
Strengths
- ✓ 500+ voices
- ✓ 140+ languages
- ✓ Free tier (500k chars/mo)
- ✓ Custom neural voice cloning
Frequently Asked Questions
Is OpenAI or Azure cheaper for text-to-speech?
OpenAI is cheaper, starting at $0.015 per 1,000 characters with OpenAI tts-1. That’s 6% less than Azure Neural Standard at $0.016 per 1,000 characters.
How much does OpenAI TTS cost compared to Azure?
OpenAI pricing starts at $0.015 per 1k chars (OpenAI tts-1), while Azure starts at $0.016 per 1k chars (Azure Neural Standard). For 1 million characters, that’s $15.00 vs $16.00.
Which has better voice quality, OpenAI or Azure?
Based on TTS Arena benchmarks, Azure scores higher on voice quality. OpenAI’s best model scores 4.1/5 while Azure’s best scores 3.9/5.
OpenAI vs Azure: which is faster?
Azure has lower latency. OpenAI’s fastest model has 250ms time-to-first-audio, while Azure’s fastest is 150ms.