Eleven v4 TTS on Runway: 2.2 credits per 1,000 chars, then 5

Runway's API pricing page lists eleven_v4 at 2.2 credits per 1,000 characters until October 12, 2026 PT, then 5 credits per 1,000 characters, with a minimum of 1 credit. On Sume, text to speech is priced per transcript character at $0.0475 per 1,000 characters, and spaces and punctuation count.

What does the Runway page say about eleven_v4?

Two dated rates sit on one row, next to older Eleven models.

How do I count characters for a long script?

Sume counts spaces and punctuation, with a maximum of 20000 characters per request. Take the script's length, divide by 1,000 and multiply by the rate card price. For the v4 model itself, see Eleven v4 text-to-speech API.

When is the amount fixed on Sume?

The generation admission page says paid generation uses public Sume USD estimates and that Sume reserves the estimated amount when the request is accepted. Read the current rate from the pricing page at submit time.