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Add Chirp 3 HD and Journey voice support to Google TTS

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Route Chirp and Journey voice families to the v1beta1 API endpoint
automatically. Adds beta voice detection, dynamic API version
selection, and Chirp3-HD cost estimation ($30/1M chars).
This commit is contained in:
calesthio
2026-04-06 12:13:41 -07:00
parent 1b7e13d24b
commit d5e754ba0f
1 changed files with 15 additions and 2 deletions
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17
tools/audio/google_tts.py
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@@ -134,12 +134,21 @@ class GoogleTTS(BaseTool):
return ToolStatus.AVAILABLE
return ToolStatus.UNAVAILABLE
# Voices requiring the v1beta1 endpoint (Chirp 3 HD, Journey)
_BETA_VOICE_PREFIXES = ("Chirp", "Journey")
def _needs_beta_api(self, voice: str) -> bool:
"""Check if voice requires the v1beta1 endpoint."""
return any(prefix in voice for prefix in self._BETA_VOICE_PREFIXES)
def estimate_cost(self, inputs: dict[str, Any]) -> float:
text = inputs.get("text", "")
char_count = len(text)
voice = inputs.get("voice", "en-US-Neural2-D")
# Pricing per million characters (approximate)
if "Studio" in voice:
if "Chirp3-HD" in voice:
rate_per_char = 0.000030 # $30/1M chars
elif "Studio" in voice:
rate_per_char = 0.000160 # $160/1M chars
elif "Neural2" in voice or "Journey" in voice:
rate_per_char = 0.000016 # $16/1M chars
@@ -190,8 +199,12 @@ class GoogleTTS(BaseTool):
},
}
# Chirp 3 HD and Journey voices require the v1beta1 endpoint
api_version = "v1beta1" if self._needs_beta_api(voice_name) else "v1"
url = f"https://texttospeech.googleapis.com/{api_version}/text:synthesize"
response = requests.post(
"https://texttospeech.googleapis.com/v1/text:synthesize",
url,
headers={"Content-Type": "application/json"},
params={"key": api_key},
json=payload,