Prepaid Wallets vs Monthly Passes: Do the Math

A prepaid wallet and a monthly pass can both make AI spending easier to manage, but they solve different problems. A wallet funds usage as it happens. A pass charges a recurring amount for whatever access or allowance its terms specify. To choose between them, compare the cost of completing your actual work—not just the advertised price.

#1 · Define what you are comparing

Start with the billing rules. For a wallet, record model rates, minimum top-ups, balance expiration, and any fees. For a pass, record the monthly charge, included usage, reset date, overage rates, and restrictions. Do not assume that a pass includes unlimited API calls or supports the same tools as a wallet.

Check whether both options cover your workflow. Interactive chat access is not automatically interchangeable with API access for coding tools or scripts.

#2 · Measure a representative week

Track input tokens, output tokens, model choice, and any separately billed features. Include background agents, retries, and long conversations: they can consume usage without producing an obvious extra deliverable.

If you use Claude Haiku 4.5 for routine tasks and Claude Sonnet 5.5 for harder work, measure them separately. A blended average can hide an expensive shift in your model mix.

Multiply a representative weekly total by roughly 4.3 to estimate a month. If your work is seasonal or project-based, also build a quiet-month estimate and a busy-month estimate.

#3 · Calculate the wallet cost

For each model, multiply input tokens by the input rate and output tokens by the output rate, using the provider's billing units. Add any other applicable charges, then sum across models.

Hypothetical example: suppose your normal workload costs $24 per month at wallet rates. A month with twice that workload would cost $48 if rates, model mix, and usage characteristics stayed the same. These numbers illustrate the method; they are not Relay365 prices.

Separate consumption from deposits. Topping up $50 and using $24 leaves $26 in the wallet, subject to its terms. The deposit affects cash flow; the consumed amount is your usage cost.

#4 · Translate the pass into the same units

Suppose a hypothetical pass costs $30 per month and includes usage equivalent to $40 at the wallet rates you actually use. Assume equivalent access and no additional charges within that allowance.

• At $24 of monthly usage, the wallet costs $24 and the pass costs $30.
• At $36 of monthly usage, the wallet costs $36 and the pass costs $30.
• Above the included allowance, you must add overage charges or account for work you cannot complete.

That comparison only works if the allowance is genuinely interchangeable across your workload. A quota measured in messages, requests, or weighted credits needs conversion using realistic tasks.

#5 · Find the break-even point

Within the pass allowance, break-even occurs when equivalent wallet spending equals the pass fee. In this example, that is $30 per month. Below it, the wallet is cheaper; above it, the pass may be cheaper until its allowance or restrictions change the calculation.

Beyond the allowance, compare pass fee plus overages against total wallet usage cost. Do not extend the apparent savings indefinitely.

#6 · Test uncertainty and hidden friction

Run the comparison for quiet, normal, and busy months. Check whether unused pass allowances disappear, wallet balances expire, or refunds are restricted. Include applicable taxes, payment fees, and currency conversion consistently on both sides.

Also consider practical limits. Concurrency caps, unavailable models, or incompatible tooling can make the cheaper option unsuitable. Neither a prepaid balance nor a monthly payment alone establishes an uptime guarantee.

#7 · Choose, then review actual spending

A wallet often fits irregular workloads, experimentation, and changing model mixes. A pass can fit steady demand when its usable allowance consistently exceeds its fee and its restrictions suit your work.

Relay365 is worth considering for pay-as-you-go access across multiple model families, particularly when you work with Claude Code, Codex, Gemini CLI, or an OpenAI SDK. Verify current rates and wallet terms against your estimates, then create a Relay365 account if that setup matches your needs.

Review the first full month of actual charges. The best option is the one that handles your workload at a sensible total cost—not the one with the most attractive headline allowance.