TTS price per 1,000 characters: every Sume row next to MAI-Voice
Sume's TTS Router bills $0.0475 per 1,000 characters on Sonic rows and $0.05 to $0.125 on Eleven rows; Microsoft lists MAI-Voice-2.1 at $0.022.
Per 1,000 characters, Sume's TTS Router bills $0.0475 on every Sonic row, $0.05 on Eleven v4 Turbo, $0.0625 on Eleven Turbo v2.5, $0.10 on Eleven v4 and $0.125 on Eleven v3 and Multilingual v2, all before rounding the job total up to the next cent. Microsoft lists MAI-Voice-2.1 at $22 per million characters ($0.022 per 1,000) and Flash at $15 ($0.015).
Sume values are the catalog's provider list per character times the 1.25 house margin, from packages/api-contract/src/tts-router-models.ts (origin/main b28f3b0). Microsoft's prices are from its model page. Both read on 2026-10-13. The Sume figures include Sume's margin and the vendor figures do not, so this is a rate comparison, not a like-for-like bill.
| Model | Provider list (micro-dollars per char) | Sume billed per 1,000 chars |
|---|---|---|
| Sonic 3.6, 3.5, 3, latest, preview, 2, turbo | 38 | $0.0475 |
| Eleven v4 Turbo | 40 | $0.05 |
| Eleven Turbo v2.5 | 50 | $0.0625 |
| Eleven v4 | 80 | $0.10 |
| Eleven v3 | 100 | $0.125 |
| Eleven Multilingual v2 | 100 | $0.125 |
| MAI-Voice-2.1 (Microsoft list, not on Sume) | 22 | not applicable |
| MAI-Voice-2.1-Flash (Microsoft list, not on Sume) | 15 | not applicable |
What does a 15 second ad line cost?
A 15 second line is about 200 to 250 characters at a normal pace. At $0.0475 per 1,000 characters that is about $0.012 of characters, but the catalog's minimum is one cent, so expect one cent. The cent minimum is why per-line prices look flat for short lines and diverge only past a few thousand characters.
Where do I read the live price?
The router catalog publishes list_usd_micros_per_character, billable_margin and the formula for each row, so a script can compute a quote before it submits. Admission preview and MCP dry_run also return an estimate before any credit is reserved.
curl https://api.sume.com/v1/tts-router/models \
-H "Authorization: Bearer $SUME_API_KEY"Sources
Related posts
More in Pricing
- AI music tracks on Sume Music 1.0: the cost per generation
Sume Music 1.0 charges a fixed price for each accepted generation, whatever the prompt, so a set of tracks costs that price times the count.
- AI video longer than 30 seconds on Sume: how many jobs, and the cost
No Sume video model makes more than 30 seconds in one job. How longer videos split into jobs on Wan 3.0 or Seedance 2.5, and what the set costs, by length.
- GPT Image 2.5 cost on Sume by quality, size and image count
What GPT Image 2.5 images cost on Sume at each quality tier, square and 16:9, for every image count these posts priced. One image per request.
- Ideogram 4.5 image cost on Sume at low, medium and high quality
What a set of Ideogram 4.5 images costs on Sume at low, medium and high quality, for every set these posts priced. Image size does not change the price.
Written by Sume