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API Cost Calculator for OpenClaw Workloads

Estimate OpenClaw API costs before you deploy. Compare daily, monthly, and yearly token spend across model options.

Quick orientation

When to use this tool

Use this calculator when you need a fast, realistic answer to the question that usually shows up right before launch: what will this workload cost once real usage starts?

  • 1

    Before picking a default model for a new assistant or agent team

  • 2

    When comparing free, budget, and premium model mixes

  • 3

    When setting client budgets, rate limits, or monthly usage caps

100200K
50100K

Gemma 3 27B

Free

Daily

$0.0000

Monthly

$0.0000

Yearly

$0.0000

Per 1K requests

$0.0000

Export

Interpret the numbers

What to do with the output

The raw estimate matters less than the decision it helps you make. These are the figures that usually deserve the most attention.

Per request

$0.0000

Useful for sanity-checking whether a single interaction is cheap enough to scale.

Monthly projection

$0.0000

Usually the most practical number for a budget, client proposal, or internal cap.

Yearly projection

$0.0000

Helpful when a workflow is likely to become a permanent part of the stack.

What this tool helps you decide

A rough cost estimate is often enough to rule out a bad model choice early. This page is meant to shorten that decision loop before you build the rest of the workflow around the wrong assumptions.

It also helps when you need to explain cost tradeoffs to a teammate or client in plain language instead of raw token math.

  • Check whether a higher-quality model is still affordable at your expected volume
  • Pressure-test the impact of longer prompts, tool calls, or bigger outputs
  • Turn an experiment into a usable monthly budget estimate

How to interpret the estimate

The best number to focus on depends on the decision in front of you. Per-request cost is useful when you are thinking about margins or heavy usage. Monthly cost is usually the number that matters for budgeting and approval.

If two models are close on cost, the cheaper one is not automatically the right choice. Reliability, output quality, and how much prompt cleanup you need afterwards all change the real economics.

  • Use daily cost for fast experimentation and short campaign planning
  • Use monthly cost when setting caps, package pricing, or internal budgets
  • Use yearly cost when a workflow is likely to become permanent infrastructure

Good next step after estimating cost

Once the numbers look sane, pair this with prompt trimming and model routing decisions. Cost problems usually start in prompt size or an overly expensive default model, not in billing surprises alone.

That is also the point where it helps to compare against your real prompt sizes instead of guessed averages. Small prompt inflation repeated thousands of times is where budgets quietly drift.

Common planning mistakes

What usually throws off API cost estimates

Most bad estimates are not math errors. They come from optimistic assumptions about prompts, usage, or the number of calls hidden inside one user action.

Using a happy-path token count instead of a realistic average prompt plus response size.
Forgetting retries, tool calls, or chained model requests that multiply total spend.
Picking a premium default model before checking whether most traffic could live on a cheaper tier.
Budgeting from daily cost alone and missing what the same pattern looks like over a month.

Learn next

Turn the estimate into a better setup

If the tool solved the immediate question, this is the next place to go for the broader workflow, tradeoffs, and implementation detail.

Read the OpenClaw cost optimization guide

FAQ

Is this calculator good enough for production budgeting?

It is useful for planning and comparing options, but you should still confirm live pricing and your real prompt sizes before making a final production commitment.

Why compare cost before building the workflow?

Because model choice affects everything after it, including prompt design, guardrails, throughput, and whether the finished workflow is commercially viable.