가이드
Credits & billing
How metering works, packs, refunds on failure.
Credits are the API's single unit: flat-priced per call, shared by every key on the account, bought as prepaid packs or dropped monthly by a plan. No token arithmetic — a completion on RP+ is 3 credits whether it renders 50 tokens or 800.
Top-ups
Packs are bought by card on the billing page. Larger packs carry bonus credits instead of a different rate, so per-call prices never change. Credits do not expire.
$10
1,000 credits
Try every model properly.
$50
5,500 credits
Enough to ship a beta.
$100
12,000 credits
Production traffic, best rate.
What things cost
비용 계산기
$10 Starter 팩(1,000 크레딧) 하나면 RP+ 채팅 기준 333 응답까지 쓸 수 있어요. 가격은 고정이에요 — 토큰 계산도, 예상 밖 청구도 없어요.
Metering
A call charges before the engine runs, and refunds itself if the engine returns nothing — the refund appears as a negative row in your usage ledger. Every JSON response carries the meter:
"usage": { "credits_spent": 3, "credits_remaining": 997 } Binary responses (speech) carry the same numbers in X-Credits-Spent / X-Credits-Remaining headers. Poll GET /v1/account for the balance.
Running out
A call that costs more than your balance fails fast with HTTP 402 and charges nothing — see Errors for the handling pattern worth building on day one.