What is the Rate Limit for the Chirp TTS Model?

[WindyBinDay]

Hi all,
I'm looking at using the Chirp TTS model for a telephone IVR, including real time conversion to read back user input. On the text to speech quotas and limitations page (https://cloud.google.com/text-to-speech/quotas) it doesn't include the chirp model. Does anyone know what the usage limit is for it?

[SuwarnaKale]

Hello @WindyBinDay 

Currently, Google has not published specific quota limits for the Chirp TTS model in its public documentation. Since Chirp is part of Vertex AI's newer speech offerings, its limits may follow Vertex AI's default quotas or require case-by-case adjustments. For accurate, up-to-date information, please connect with Google Cloud sales or check the Vertex AI quotas page (https://cloud.google.com/vertex-ai/docs/quotas). 

Some key steps you may try: 

• Chirp-specific quotas aren’t listed in TTS docs 
• May inherit Vertex AI’s default service limits 
• Request quota increases via Google Cloud support if needed 

Best regards,

Suwarna

[ilnardo92]

Hi @WindyBinDay and @SuwarnaKale , 

according to the documentation, the current API usage limits for Chirp 3 is 100 requests per minute per project. 

Best