Tool Call Cost Calculator
Estimate the cost of function/tool calling in agents.
Results update automatically as you type.
Result
$0.0125 per run
5 tool calls · ~$375.00/month
- Tool calls / run
- 5
- Cost per run
- $0.0125
- Cost per month
- $375.00
Every tool call sends context in and gets a result back, plus any external API cost. Estimate the cost per agent run based on how many tools it calls.
How this is calculated
This calculator uses the agents formulas described in our methodology. All figures are estimates for planning; verify current pricing with each provider before relying on them.
Worked example (defaults)
With the default inputs above, here is the result:
Result
$0.0125 per run
5 tool calls · ~$375.00/month
- Tool calls / run
- 5
- Cost per run
- $0.0125
- Cost per month
- $375.00
Frequently asked questions
Do tool calls cost extra tokens?+
Yes. Tool schemas add input tokens, and each call round-trips the growing context plus the tool result, so many small calls can cost more than one larger prompt.