Credit Billing
How credit billing works
This page applies to organizations enrolled in credit billing. Availability depends on your organization. Check the Studio billing page for your plan and credit balance. Organizations on legacy usage-billed plans should use the Billing guide.
Credit plans give you a predictable bill. Your subscription comes with a set number of credits each month, and you spend them as you generate. The monthly charge stays the same no matter how much you use, and there are no separate usage invoices. If you run low before your next refill, you can top up in seconds.
1 credit covers $0.01 of generation usage. A model that costs $0.05/sec consumes 5 credits/sec. The price of purchased top-up credits depends on your plan; see Top-ups.
Credit plans
Every paid plan includes a monthly pool of credits. Your concurrency and maximum video length grow as you move up.
Hobby outputs carry a watermark. Starter, Pro, and Team include watermark-free outputs when a clean output is available. File limits are measured in binary units: 1 MiB is 1,048,576 bytes, and 1 GiB is 1,073,741,824 bytes. Transport limits can be lower; see Asset Uploads.
If you’re running at higher volume or want a custom credit allotment, talk to sales about an Enterprise plan.
Free tier
Free accounts don’t use credits. You get the same monthly allowance as always: 3 free generations per month (20 seconds max, with up to 1 Sync 3 generation at 15 seconds), plus 10 combined text-to-speech and dubbing generations. Up to 3 of those 10 can be dubbing, with a 20-second source limit per free dub. If you do not use dubbing, all 10 can be text-to-speech. No credit card required. Credits start once you subscribe to a paid plan.
How credits are spent
You’re charged per generation, based on the model you pick and how long your output runs. For lip sync, we count the frames in your output and multiply by the model’s per-frame credit rate. TTS and dubbing use audio duration. Since 1 credit = $0.01, each rate is the cent value of the model’s per-second price (shown here at 25 fps):
So a 30-second lipsync-2-pro generation runs about 250 credits (30 × 8.3).
dubbing credit pricing
The updated standard dubbing rate is 10 credits per second (600 credits per minute) on all credit plans. Until the update is enabled for your account, the previous rate of 1.6 credits per second (96 credits per minute) applies. This rollout is independent of legacy subscription renewals. Negotiated enterprise and pilot terms remain unchanged.
Dubbing estimates use source duration rounded up to a whole second. Final usage uses dubbed-output duration rounded up to a whole second, capped at the source-duration reservation. For example, a 20.2-second source reserves 210 credits at the updated rate; a 19.2-second output uses 200 credits. A longer output does not increase the debit beyond that reservation.
The dubbing charge covers audio only. Lip sync adds the selected model’s credit charge. When dubbing uses your connected ElevenLabs API key, the provider bills that audio usage instead of Sync deducting dubbing credits; Sync lip sync charges still apply.
The 600-credit rate is the same across credit plans. It is not a promise of a $6 cash purchase: top-up credit prices vary by plan.
Monthly grants and rollover
Unused credits carry over. Your plan’s credits arrive at the start of each billing period, and anything left over stays usable through the end of the next period before it expires. That gives you a one-month cushion for uneven months, without balances piling up forever.
When you generate, we always spend your soonest-to-expire credits first, so you never lose credits you could have used.
Top-ups
You can add credits any time, in two ways.
Top-up prices differ from the value used to calculate generation consumption:
One-time purchase
Buy 500–50,000 credits on demand from the subscription page. The checkout shows the credit quantity and the price for your plan before payment. Credits are granted after successful payment.
Automatic top-up
Automatic top-up keeps your balance from running out without manual purchases. Choose a threshold from 0 to 50,000 credits and a recharge amount from 500 to 50,000 credits. Both values are required when enabling it. When your balance drops below the threshold, we add the recharge amount and charge the card on file at your plan’s top-up rate.
Top-up credits never expire while you’re subscribed. They sit on your balance until you use them, and we only spend them once your monthly plan credits run out. If an automatic charge fails twice in a row, we switch automatic top-up off so you’re never caught in a retry loop. One exception: canceling forfeits all credits, top-ups included (see Changing plans).
Changing plans
Upgrade, downgrade, or cancel any time from the subscription page.
- Upgrades take effect immediately. Your new tier’s credits land right away, and credits from your old tier keep their one-month rollover.
- Downgrades keep your current credits, rollover and all, and apply the new monthly allotment at your next billing period.
- Cancellation returns you to the free plan when your subscription ends. At that point every remaining credit is forfeited, including credits you bought through top-ups, and they don’t come back if you resubscribe. Use them before you cancel.
FAQ
What happens when I run out of credits?
Generations pause once your balance can’t cover the cost of a job. To pick back up, top up from the subscription page, switch on automatic top-up to refill before you hit empty, or wait for your next monthly grant.
Do my monthly plan credits roll over?
Yes, for one extra billing period. Credits granted this month stay usable through the end of next month, then expire. Top-up credits never expire.
In what order are my credits used?
Soonest-to-expire first. We spend your monthly plan credits before your never-expiring top-up credits, so you don’t lose credits you could have used.
What happens to my credits if I cancel?
Every remaining credit is forfeited when your subscription ends. That includes your monthly plan credits and anything you bought through top-ups, and they don’t return if you resubscribe. Use them before you cancel.
Manage your billing
Check your balance, top up, or change plans on the subscription page. If you have a question about a charge or your credits, reach out from the support chat in your dashboard or email support@sync.so.