AI Agent Cost Calculator: What Will Your Agent Cost to Run?
Use this free AI agent cost calculator to enter how many steps your agent takes, how many tokens each step uses and how often it runs. You get a cost per run, per day, per month and per year.
Why Use an AI Agent Cost Calculator Tool
An AI agent cost calculator tool answers the question every team asks before launch: what will this agent cost when real users arrive? A chat reply is a single model call. An agent is a loop of many calls, and each call re-reads a longer history than the one before it. That is why a quick guess is often far off. With AgentTab you enter the steps, tokens, caching and retries you expect, and the AI agent cost calculator shows the cost per run, per day, per month and per year.
- Price a new product feature before you build it.
- Compare model tiers and see if a cheaper model is enough.
- Set a monthly budget and a safe margin for your team.
- Measure how much prompt caching can save.
- Explain agent costs to managers, clients and investors in plain numbers.
The numbers are estimates, so please read our AI agent cost calculator disclaimer and the about page to see how the tool works and what it cannot know.
How the AI Agent Cost Calculator Works
An agent is a loop. Each step calls the model, which reads everything so far and writes an answer or a tool request. The calculator models that loop directly:
- Input tokens at step
nequal the starting tokens plus(n − 1)times the context growth. - The cache share of input is billed at the cached price. The rest is billed at the full input price.
- Output tokens are billed at the output price, which is usually several times the input price.
- Tool cost per step is added, then the retry rate scales the whole run.
- Daily, monthly and yearly figures multiply the run cost by your volume.
Here is a worked example. Take an agent with 8 model calls per run, 3,000 starting input tokens, 1,200 tokens of growth per step, 400 output tokens per step, 60 percent cache hits and an 8 percent retry rate. At example prices of $3 and $15 per million tokens, and 500 runs per day, the AI agent cost calculator gives about $0.146 per run and about $2,195 per month. Change one input, such as the cache share, and the result updates at once, so you can see which lever matters most.
5 Ways to Lower AI Agent Costs
Once the AI agent cost calculator shows where the money goes, these five habits are the fastest way to bring the bill down.
- Cache the system prompt and tool definitions, since they repeat on every step. See the Anthropic prompt caching guide for how caching is billed.
- Trim or summarize history instead of re-sending every tool result.
- Route easy steps to a smaller model and keep the large model for planning.
- Cap the number of steps so one stuck run cannot loop for dozens of calls.
- Cut retries by validating tool output and fixing the prompt that causes them.
Where to Find Current AI Model Prices
The price tiers in the calculator are round examples. For a real estimate, copy the current rates from your provider and type them into the input and output price fields of the AI agent cost calculator. Official pricing pages are the best source: the Anthropic pricing page, the OpenAI API pricing page and the Google Gemini API pricing page. Prices, discounts and caching rules change, so check them each time you plan a budget.
Who Should Use This AI Agent Cost Calculator
Developers can test how prompt length and step limits change the bill. Product managers can price a feature before it ships. Founders can check that an agent keeps a healthy margin per customer, and finance teams can turn token usage into a monthly forecast. Everything runs in your browser, and your inputs are not sent to a server. You can read the details in our Privacy Policy, or write to us on the Contact Us page if you have a question or a feature idea.
AI Agent Cost Calculator FAQ
Why does an agent cost more than a single chat request?
An agent makes many model calls per task, and each call re-reads the conversation so far. Cost grows faster than the number of steps because later steps carry more context.
Where do I find my token counts?
Most providers return token usage with every API response. Average a few dozen real runs and enter those numbers for the starting tokens, growth and output fields.
Are the preset prices current?
No. They are round example prices for four tiers. Model prices change, so enter your provider’s published rates in the price fields.
Does the calculator store my data?
No. Everything runs in your browser and nothing is sent anywhere.