Sume TTS 1.0 vs TTS Router: same $0.0475 per 1,000 characters
Sume's catalog prices TTS 1.0 and TTS Router identically: $0.0475 per 1,000 characters, 20,000-character maximum. They differ in how you pick the model.
The Sume catalog lists two TTS entries at the same price: sume/tts-1.0 and sume/tts-router, both $0.0475 per 1,000 characters. TTS 1.0 has a stated maximum of 20,000 characters per request; TTS Router reserves with 'the Sume TTS 1.0 character book' (list x 1.25) and points to GET /v1/tts-router/models for per-model caps. So the choice is not about price.
Catalog facts
Everything below comes from the public catalog on 2026-10-09.
| Entry | Price | Billing basis | Cap |
|---|---|---|---|
| sume/tts-1.0 | $0.0475 per 1,000 characters | Transcript character count after Sume margin | 20,000 characters |
| sume/tts-router | $0.0475 per 1,000 characters | Pass-through models, Sume TTS 1.0 character book (list x 1.25) | Per-model caps from the router catalog |
What a request costs
A 20,000-character request is the maximum on TTS 1.0 and costs $0.95 (20 x $0.0475). A 5,000-character script costs $0.2375.
A short line of 40 characters costs $0.0019 at the catalog rate.
Which to call
Use TTS Router if you want to pick a pass-through voice model from the router catalog. Use TTS 1.0 if you want the plain default. Because the rate is the same, you can switch later without a price change. Compare with a competitor's rate before you commit: for example, Google's Gemini 3.8 Flash TTS is billed per audio second, so the break-even depends on speech rate (see the related post).
Sources
Related posts
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