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This helper currently returns a coming_soon placeholder in the Python SDK.
Method: client.generate_speech() 
result = client.generate_speech({
    "model": "openai/gpt-4o-mini-tts",
    "input": "Hello world",
})

print(result)
# {
#   "status": "coming_soon",
#   "endpoint": "audio/speech",
#   "message": "This endpoint is not yet supported in the SDK.",
#   "payload": {...}
# }
Last modified on February 17, 2026