TTS-1 HD API Pricing
Short answer
TTS-1 HD costs $30/M characters. Last verified 2026-06-21 from developers.openai.com. Confidence: Verified.
TTS-1 HD is OpenAI's higher-quality legacy speech synthesis model.
TTS pricing
$30.00 /1M chars
Price detail$30/M characters
Capabilities
Speech / billing specQuality-optimized speech
Modalitytext → speech
ChannelOfficial API
ProviderOpenAI
Best for
TTSHigh qualityNarration
Billed per input character. It costs twice TTS-1 and lacks the newer instruction control of GPT-4o mini TTS.
Last checked Verified
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