How much is a 30-second voiceover on Sume TTS? About 2 cents
A 30-second read is roughly 400 characters, 1.9 cents at Sume's list rate, billed 2 cents. The same text is 0.6 cents on MAI-Voice-2.1 Flash at list.
A 30-second voiceover is roughly 400 characters at a typical speaking pace, which is 1.9 cents at Sume's list rate of $0.0475 per 1,000 characters and bills as 2 cents after per-job rounding. The same 400 characters is 0.6 cents on MAI-Voice-2.1 Flash at Microsoft's list price.
The estimate and its limit
The 400-character figure is our rule of thumb for English, not a Sume or Microsoft number: pace varies by voice, language and the speed setting (0.6 to 1.5). Measure one render and scale from that.
| Option | Rate | Cost |
|---|---|---|
| Sume TTS 1.0 | $0.0475 per 1,000 characters | 1.9 cents, billed 2 cents |
| MAI-Voice-2.1 Flash | $15 per 1M characters | 0.6 cents |
| MAI-Voice-2.1 standard | $22 per 1M characters | 0.88 cents |
Make it exact
Run the job with dry_run to get the estimate for your actual text, including spaces and punctuation, then submit with max_spend_usd set slightly above it. Billing details are in the Sume docs and the API reference; Microsoft prices are on its model page.
What the price leaves out
Voiceover cost is rarely the main cost of an ad. Captions ($0.20 per job up to 60 seconds, see video captions) and the video itself usually cost more. Per-character TTS price should not drive the choice on its own.
Sources
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Written by Sume