OpenAI TTS vs Google Cloud Text-to-Speech on price
Google Cloud Text-to-Speech is cheaper at every volume from 1 to 100 hours of speech a month. At 10 hours a month, OpenAI TTS's cheapest option is tts-1 at $8.10 and Google Cloud Text-to-Speech's is Standard voices at $0. Both sell an API.
| Speech a month | OpenAI TTS | Google Cloud Text-to-Speech |
|---|---|---|
| 1 hour | $0.81 ($0.013/min) tts-1 | $0 ($0/min) Standard voices |
| 5 hours | $4.05 ($0.013/min) tts-1 | $0 ($0/min) Standard voices |
| 10 hours | $8.10 ($0.013/min) tts-1 | $0 ($0/min) Standard voices |
| 50 hours | $40.50 ($0.013/min) tts-1 | $0 ($0/min) Standard voices |
| 100 hours | $81 ($0.013/min) tts-1 | $5.60 ($0.001/min) Standard voices |
Each side's cheapest option for the volume, monthly billing where offered, free allowances included; bold marks the cheaper. Per-minute figures assume 900 characters of text per minute of speech.
What the numbers say
- How fast the speech is changes the bill for text-billed plans: at 10 hours a month, OpenAI TTS costs $6.48 at 720 characters a minute and $9 at 1,000; Google Cloud Text-to-Speech costs nothing (within its free tier) either way.
- Google Cloud Text-to-Speech gives 4,000,000 characters a month free (Standard voices, about 4,444 minutes); OpenAI TTS lists no free allowance on its pricing page.
Every OpenAI TTS option at 10 hours a month
| Option | A month | Per minute |
|---|---|---|
| tts-1 | $8.10 | $0.013 |
| tts-1-hd | $16.20 | $0.027 |
Every Google Cloud Text-to-Speech option at 10 hours a month
| Option | A month | Per minute |
|---|---|---|
| Standard voices Google lists these under legacy models. | $0 | $0 |
| WaveNet voices Listed at the same price and billing code as Standard. | $0 | $0 |
| Neural2 voices | $0 | $0 |
| Chirp 3: HD voices | $0 | $0 |
| Studio voices | $0 | $0 |
"Bigger plan" means the plan's minutes run out before 10 hours and no extra-minute price is published.
Price only: voices, languages, latency and licences differ, so try both. Compare every voice tool for your own monthly minutes, or see every text-to-speech API.
Prices on this page were checked against the official pricing pages on .