Is it cheaper to prepay for LLM API credits?
When prepay can save money
OpenAI, for example, has offered discounts for prepaid credits in the past, though terms change. Anthropic and others may offer similar deals for committed spend. If you have predictable, high-volume usage, a 5–20% discount can be worthwhile.
Prepay also simplifies budgeting and can protect against price increases during the credit period. However, always read the fine print: credits may expire, and refunds are often not available.
When it's not worth it
If your usage is low or unpredictable, prepaying locks up cash and risks unused credits. Many providers don't offer any discount for prepayment, so you gain nothing but lose flexibility.
Also consider that LLM prices have generally been falling over time. Committing to a large prepayment today might mean paying more than the market rate in a few months.
- No discount offered: skip it
- Discount less than 5%: usually not worth the lock-in
- Credits expire in under 12 months: risky
- Usage is seasonal or unpredictable: avoid
- You need cash for other investments: avoid
Alternatives to prepay
Instead of prepaying, you can negotiate a committed use discount (like cloud providers offer) or use a reseller that passes on discounts. Some proxies also offer pooled credits at a discount.
Another option: set aside the cash in a high-yield savings account and pay as you go. You keep flexibility and earn interest.
Common mistakes
- Assuming all providers offer prepay discounts—many don't.
- Forgetting that prepaid credits often expire and are non-refundable.
- Prepaying a huge amount when prices are falling, locking in a higher rate.
