A 100,000-character script: five Sume TTS jobs at $0.95 vs MAI-Voice
100,000 characters is five full 20,000-character Sume TTS requests at $0.95 each, $4.75 total; MAI-Voice-2.1 lists $2.20 and Flash $1.50.
A 100,000-character script (about an audiobook chapter) takes five Sume TTS requests at the 20,000-character maximum, $0.95 each, so $4.75 in total. The same text lists at $2.20 on MAI-Voice-2.1 and $1.50 on MAI-Voice-2.1-Flash.
| Route | Requests | Total |
|---|---|---|
| Sume TTS (20,000 chars max per request) | 5 | $4.75 |
| MAI-Voice-2.1 ($22/1M) | n/a | $2.20 |
| MAI-Voice-2.1-Flash ($15/1M) | n/a | $1.50 |
How to split the script
Cut at paragraph boundaries so no chunk goes over 20,000 characters, run the chunks as separate requests, and join the audio files afterwards, or place them on a Timeline. Joining on a Timeline is billed separately per output minute.
Check the price before you run
Sume lists the rate on the rate card; Microsoft's rates are in its announcement. The Sume maximum for a single request is $0.95, which is why five chunks is $4.75.
Recompute it in Python
Ceiling division gives the request count; each full request is $0.95. The numbers are the ones in the table above.
chars = 100_000
requests = -(-chars // 20_000)
print(requests, 'requests', round(requests * 0.95, 2), 'USD')Sources
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Written by Sume