Last updated: 28 June 2026
OpenAI vs Deepgram: TTS Pricing Comparison
OpenAI is 50% 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 | Deepgram Aura |
|---|---|---|---|---|
| 10,000 | $0.15 | $0.30 | $0.15 | $0.30 |
| 100,000 | $1.50 | $3.00 | $1.50 | $3.00 |
| 1,000,000 | $15.00 | $30.00 | $15.00 | $30.00 |
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)
Deepgram
Best for: Real-time conversational AI, voice bots, and applications where latency matters most.
Strengths
- ✓ Ultra-low latency (90ms)
- ✓ Streaming-optimized
- ✓ Simple pay-as-you-go
- ✓ $200 free credits
Frequently Asked Questions
Is OpenAI or Deepgram cheaper for text-to-speech?
OpenAI is cheaper, starting at $0.015 per 1,000 characters with OpenAI tts-1. That’s 50% less than Deepgram Aura at $0.030 per 1,000 characters.
How much does OpenAI TTS cost compared to Deepgram?
OpenAI pricing starts at $0.015 per 1k chars (OpenAI tts-1), while Deepgram starts at $0.030 per 1k chars (Deepgram Aura). For 1 million characters, that’s $15.00 vs $30.00.
Which has better voice quality, OpenAI or Deepgram?
Based on TTS Arena benchmarks, Deepgram scores higher on voice quality. OpenAI’s best model scores 4.1/5 while Deepgram’s best scores 3.7/5.
OpenAI vs Deepgram: which is faster?
Deepgram has lower latency. OpenAI’s fastest model has 250ms time-to-first-audio, while Deepgram’s fastest is 120ms.