Does Leaxor have a subscription or a free tier?

Neither. Leaxor is pay-as-you-go only.

There is no monthly plan and no free tier. Credits cost $0.10 each with a 50-credit ($5) minimum purchase, they never expire, and you pay only when you generate something.

Being straight about the trade: a free tier would let you try before paying, and Leaxor doesn't offer one. What it offers instead is a $5 entry with no recurring commitment — enough for one to three finished videos depending on tier.