Runway free plan 125 credits: how many seconds of Gen-4.5 is that

Runway's free plan buys about 10 seconds of Gen-4.5 video. The pricing page gives the free plan 125 one-time credits and lists Gen-4.5 Video at 60 credits for 5 seconds, which is 12 credits a second. Two 5-second clips use 120 credits and leave 5. The free plan does not renew, so after those clips you need a paid plan or another provider.

Seconds per plan at 12 credits a second

The page lists annual-billing prices and regular monthly prices. The table uses the annual price and rounds seconds down.

The same ten seconds on Sume

Sume has no plan and no credits. You pay per job from a balance, at the provider list price times 1.25. These rows come from the repository price tables for a 10-second clip, with no retakes.

What the comparison leaves out

If you are testing whether AI video fits your workflow, the free 10 seconds is enough for two tries. If you are testing at volume, a balance you top up by the job is easier to forecast than a monthly credit pool, because unused seconds do not sit on a plan.

• Runway's page lists one Gen-4.5 rate and does not tie it to a resolution, so rows are not matched on output size.
• Runway's credit pool is monthly, so a plan only pays off if you use the credits.
• Sume's clip prices exclude trimming, captions and assembly, each billed per job.

A trial plan that uses both

A 5-second Wan 3.0 clip at 480p is $0.3125 on Sume, since the rate is $0.0625 a second. Sume does not run Runway's models, so this is a way to compare outputs, not a way to buy Runway seconds. Whatever you choose, record the model id, the prompt and the clip length, because those three decide the price of the next batch.

• Spend Runway's free 125 credits on two 5-second Gen-4.5 clips for the look you want.
• Run the same two prompts on Sume at 480p for $0.31 a clip on Wan 3.0 to compare motion and cost.
• Keep the winner and note its price per second before you scale up.