Vidnoz 450 credits: how many avatar seconds is that vs Sume?

On the pricing page I read, Vidnoz's Starter plan lists 450 credits a month, and standard video generation costs 0.5 credits per second, so 450 credits is 900 seconds (15 minutes) of standard avatar video. Expressive and photo avatars cost 2 credits per second, which cuts the same 450 credits to 225 seconds (3 minutes 45 seconds). Sume prices the same seconds in dollars instead of credits, from $0.184 a second on the Standard tier.

The numbers below come from Vidnoz's pricing page and Sume's avatar video guide, both read on 2026-10-04. The page does not show a per-credit dollar price in a form I could read cleanly, so this post compares seconds, not dollars, on the Vidnoz side.

What 450 credits buys on Vidnoz

Credits only matter once you turn them into seconds of finished video. The page states a minimum charge of 1 credit, so very short clips round up.

The same seconds priced on Sume

Sume Avatar 1.0 bills per second of finished video, with a quality tier: standard, plus (the default when you omit it) or max. The rate is a little higher when you pass a product_image. Using the rate table in Sume's catalog:

How to read the two meters side by side

A credit plan is a prepaid bucket that resets monthly; Vidnoz's page says unused credits expire at the end of the cycle. A Sume job reserves its price when you submit and captures it when the video finishes, so there is no bucket to run out of mid-month, only the account balance. A balance too low for a job returns 402 insufficient_credits, covered in the 402 explainer.

The unit that matters is the clip you ship. A 30-second spokesperson clip is 15 credits at 0.5 credits per second, or 60 credits if the presenter is a photo avatar. The same 30 seconds on Sume is a fixed dollar amount you can read off the table before you submit, and a photo-based avatar costs the same per second as a prompt-based one because the avatar is created once, at a flat price.

Creating the presenter

Sume creates an avatar from a prompt, a structured profile (props) or a reference photo (photo), at a flat $0.95 per avatar, then you reuse its avatar_handle in every video. Because the photo path is the creation step, not a per-second surcharge, 10 clips with the same presenter cost one $0.95 creation plus 10 clip prices.

A tight request looks like this. It runs as written once SUME_API_KEY is set and the handle names a ready avatar.

curl -X POST https://api.sume.com/v1/avatar-1.0/talking-video \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: vidnoz-compare-001" \
  -d '{
    "avatar_handle": "product_host",
    "quality": "standard",
    "script": "Our spring release adds three things you asked for. Here is the short version."
  }'

When each model fits

Choose a credit plan when your volume is steady and you want a template library, many stock avatars and a visual editor in the same subscription. The page lists 3,200+ templates and 2,660+ voices on paid plans, which is editor territory, not API territory.

Choose Sume when the video is produced by code: a job per clip, a webhook or poll for the result, a quality tier per request and a price you can compute before you submit. Each job is 4 to 60 seconds, so a longer video is several jobs; the duration limit post shows how to plan them.