Free tool
Paste text, see the character count and the price per model, from short clips to audiobook scale.
Last reviewed July 17, 2026
Speech is billed per character. The estimate multiplies your text's character count by each model's per-1K-character rate and shows the in-idapt price including the speech service markup shown in the app. Replays of already-generated audio are served from cache and cost nothing.
| Model | $/1K chars | Voices | List rate | In idapt |
|---|---|---|---|---|
| Grok Voice TTSxAI | $0.0042 | 5 | $0.03 | $0.04 |
| TTS-1OpenAI | $0.0150 | 9 | $0.12 | $0.14 |
| Gemini 2.5 Flash Preview TTSGoogle AI Studio | $0.0170 | 30 | $0.14 | $0.16 |
| GPT-4o Mini TTSOpenAI | $0.0170 | 13 | $0.14 | $0.16 |
| TTS-1 HDOpenAI | $0.0300 | 9 | $0.24 | $0.29 |
| Speech 02 TurboMiniMax | $0.0300 | 30 | $0.24 | $0.29 |
| Gemini 3.1 Flash TTS PreviewGoogle AI Studio | $0.0340 | 30 | $0.27 | $0.33 |
| Gemini 2.5 Pro Preview TTSGoogle AI Studio | $0.0340 | 30 | $0.27 | $0.33 |
| Speech 02 HDMiniMax | $0.0500 | 30 | $0.40 | $0.48 |
| Speech 2.8 TurboMiniMax | $0.0700 | 30 | $0.56 | $0.67 |
| Speech 2.8 HDMiniMax | $0.1000 | 30 | $0.80 | $0.96 |
About 1,000 characters is a minute of speech at a normal reading pace. Replays of already-generated audio are served from cache and cost nothing. Browse every voice in the voice gallery.