OpenAI TTS Cost Calculator
Estimate OpenAI text-to-speech spend. Choose tts-1 ($15/1M characters), tts-1-hd ($30/1M characters), or gpt-4o-mini-tts (audio out $12/1M tokens, text in $0.60/1M). Optionally estimate minutes from characters (~900 chars/min planning default). Estimates only; official OpenAI pricing prevails.
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Primary cost (chars or audio)
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Text input cost
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Estimated audio minutes
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Monthly USD
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Estimates only; official vendor pricing prevails (2026-10-30). tts-1/hd: chars ÷ 1M × $15/$30. gpt-4o-mini-tts: audio tokens ÷ 1M × $12 + text ÷ 1M × $0.60. Chars→minutes is a planning estimate.Official pricing: OpenAI
Gemini TTS Cost Calculator · OpenAI Realtime Voice Cost Calculator · OpenAI Transcription Cost Calculator
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How it works
- How is OpenAI TTS cost calculated?
- tts-1 / tts-1-hd: characters ÷ 1M × $15 / $30. gpt-4o-mini-tts: audio-out tokens ÷ 1M × $12 + text-in tokens ÷ 1M × $0.60. Example: 1M characters on tts-1 → $15.
- What is the chars→minutes estimate?
- A planning default of ~900 characters per minute of spoken English. It is not an official OpenAI rate—edit the field to match your content.
- When should I use gpt-4o-mini-tts?
- When you bill in tokens (audio out + optional text in) rather than characters. Rates: audio $12/1M, text $0.60/1M.
- How does this compare to Gemini TTS?
- Use the Gemini TTS calculator for 3.8 Flash / Flash-Lite / 3.1 preview per-10s equivalents and promo cliffs.
- Are results billing-grade?
- No. Estimates only; official OpenAI Realtime and audio pricing prevails.