1 credit = 1 character of standard voice generation. As a rule of thumb, 1,000 credits ≈ 1 minute of finished audio.

Voices come in tiers with different rates: Turbo voices bill 0.5 credits per character; Expressive, Natural and Pro voices bill 1 credit per character; Ultra voices bill 1.5 credits per UTF-8 byte (≈1.5 credits per English character, ≈4.5 per Chinese character — a minute of Ultra audio costs about the same in any language). Voice Design costs a flat 2,500 credits per created voice, saved permanently to My Voices. The rate is always shown next to the voice before you generate — never after, and credits are charged per generation, not per download.

Monthly plan credits reset at each billing cycle. Free-tier credits accumulate: your 3,000 sign-up credits never expire, and active months add another 1,000.

Yes — all paid plans include commercial usage rights. The free tier is for personal and evaluation use.

Yes. Upgrade, downgrade or cancel in the billing portal at any time — your plan stays active until the end of the current period.