# Spring AI 2.0.2 audio classes and defaults (read from the jars) speech-to-text interface : org.springframework.ai.audio.transcription.TranscriptionModel speech-to-text OpenAI : org.springframework.ai.openai.OpenAiAudioTranscriptionModel text-to-speech interface : org.springframework.ai.audio.tts.TextToSpeechModel text-to-speech OpenAI : org.springframework.ai.openai.OpenAiAudioSpeechModel transcription DEFAULT_TRANSCRIPTION_MODEL = whisper-1 transcription DEFAULT_RESPONSE_FORMAT = text speech DEFAULT_SPEECH_MODEL = gpt-4o-mini-tts speech DEFAULT_VOICE = alloy speech DEFAULT_RESPONSE_FORMAT = mp3 speech DEFAULT_SPEED = 1.0 both DEFAULT_TIMEOUT = PT1M both DEFAULT_MAX_RETRIES = 3