Is the google speech recognition and text to speech engine under free license?

Hello,

I look around in the internet for an answer and found your website.
Hopefully you can help me. I want to programm a small solution using the
google speech recognition (http://www.google.com/speech-api/v1/recognize?)
and the google text to speech engine (
http://translate.google.com/translate_tts?).

Do you know if this webservices are under free licenses? Is it okay that I
use the api in my personal (non comercial) use? Is there an official
statement from google?

I hope you can help me!

Thank in advance!

Greetings from Germany

Andre Roeder