OpenRouter Credits: Fees, Expiry, and What $100 Actually Costs

OpenRouter credits are prepaid deposits, denominated in USD, that OpenRouter deducts from on every request. As of 26 Aug 2026, buying them costs 5.5% by card with a $0.80 minimum, or 5% by cryptocurrency. OpenRouter's terms reserve the right to expire unused credits 365 days after purchase, and refunds for unused credits may be requested only within 24 hours of the transaction. OpenRouter says it does not mark up the underlying model rate.

So OpenRouter pricing has two layers: the selected model's provider rate, and the fee charged when credits are purchased. That distinction matters because a page showing vendor list price can still cost more than vendor list price once the credit-purchase fee is included.

What OpenRouter credits are #

Credits are not a subscription and not a token allowance. They are a dollar balance you fund in advance, and each API or chat request subtracts its computed cost from that balance. Three properties are worth knowing before you fund a large amount:

The expiry clause is the one most people miss. If you pre-fund a year of usage to amortise the 5.5% fee, you are taking on the risk that the unused remainder is reclaimable by the vendor at the twelve-month mark. Funding in smaller increments avoids that risk but pays the $0.80 minimum more often — on a $5 top-up that minimum is a 16% effective fee.

How OpenRouter pricing works #

OpenRouter is pay-as-you-go rather than a required monthly subscription. Each model has input, output, and sometimes cache or image rates. Usage is deducted from purchased account credits. The purchase fee sits outside the model rate, which is why total cost should be calculated from money paid to usable balance.

total cost = model usage + credit purchase fee + optional products

For most developers comparing gateways, the funding fee is the predictable platform-level difference. Model rates vary by model and provider, while 5.5% applies whenever card credits are purchased under the published terms.

The $100 fee math #

The arithmetic is simple: multiply the credit amount by the purchase-fee rate, then add that fee to the amount charged.

$100.00 credit × 5.5% card fee = $5.50 fee
$100.00 credit + $5.50 fee = $105.50 charged

For a small card top-up, the minimum matters more. A 5.5% fee on $5 would be $0.275, but a $0.80 minimum means the effective fee is much higher on that purchase. You would pay $5.80 to receive $5.00 in credit, an effective cost of 16% relative to the usable credit.

How other wallets fund $100 #

OpenRouter is not the only hosted wallet. The same $100 question on peers, checked 26 Aug 2026 against official pages:

Vercel publishes no token markup and no platform fee. Their docs say you are responsible for any payment processing fees that may apply; enterprise invoice has none. We do not invent a processor percentage. Direct comparisons: RouterPlex vs OpenRouter, vs LLM Gateway, vs Vercel AI Gateway, and the OpenRouter alternatives list.

A purchase fee is not a token markup #

It is useful to separate three numbers when comparing an LLM gateway:

• Model rate: the input and output token price shown for a model.
• Purchase fee: the amount charged to turn dollars into gateway credits.
• Operational extras: logging, routing, observability, or support products that may have separate prices.

Two gateways can show the same Claude or GPT token rate while producing different total costs. If Gateway A charges $105.50 for $100 of credit and Gateway B charges $100 for $100 of credit, Gateway A is effectively 5.5% more expensive before a single token is generated.

This is why comparisons based only on a model table are incomplete. Follow the money from payment method to usable balance. If the fee is the reason you are comparing services, start with the broader OpenRouter alternatives guide.

What the fee costs over time #

The dollar amount becomes more visible once usage is recurring.

This is not a claim that OpenRouter is always the wrong choice. It has a broad catalog and mature routing features that may justify the fee for a particular team. The point is to include the purchase fee in the comparison instead of treating it as invisible.

How RouterPlex handles top-ups #

RouterPlex uses a prepaid balance with no top-up fee and no model markup. Pay $5 and the account receives $5 in usable credits. Pay $100 and it receives $100.

The tradeoff is explicit: RouterPlex is focused on one OpenAI-compatible endpoint, a curated multi-provider catalog, and spend controls. It is not trying to reproduce every feature of every larger gateway.

Each API key can have its own hard lifetime budget. That lets you create separate keys for a coding agent, production app, evaluation job, or client without giving each workload access to the entire account balance. See the full model price list and the detailed RouterPlex vs OpenRouter comparison.

A practical comparison checklist #

Before choosing a gateway, record these numbers for your actual workload:

1. The amount charged to receive $100 in usable credit.
2. The input and output price of the models you use most.
3. Whether unused credit expires.
4. Whether a balance can become negative.
5. Whether keys support a hard server-side spend limit.
6. Whether switching away requires code changes beyond a base URL and key.

The cheapest-looking token table is not necessarily the lowest total cost. The useful question is: how many usable model dollars arrive after payment, and how tightly can you cap the downside?

Start with the smallest real test #

For a self-serve API, a paid $5 test is more informative than a feature matrix. Create one key with a $5 budget, run the same prompt set against the models you care about, and inspect latency, output quality, and the final balance.

Start RouterPlex with a $5 top-up, or compare every published rate in the model catalog.