Pay for characters, not seats.
Prepaid packs that never expire. Use them in the browser or through the API, in either mode.
FAQ
Do characters expire?
No. A pack stays on your balance until it is used.
How are characters counted?
By the length of the source text you send, in Unicode characters, in either mode.
What if a translation fails?
Characters are refunded automatically for any request that does not return a translation.
Can I get an invoice?
Yes. Every payment produces an invoice in your account.