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Translation model
gpt-5-mini
gpt-4o
gpt-4o-mini
o3
o4-mini
Transcription model
gpt-4o-mini-transcribe
gpt-4o-transcribe
whisper-1
TTS model
gpt-4o-mini-tts
tts-1
tts-1-hd
TTS voice
Alloy — neutral, balanced
Ash — clear, precise
Ballad — warm, storytelling
Coral — warm, friendly
Echo — resonant, deep
Sage — calm, thoughtful
Shimmer — bright, energetic
Verse — smooth, expressive
Marin — natural, conversational
Cedar — rich, grounded
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