What does a multi-step AI agent cost per task?
Before committing to a model, most teams building autonomous agents want to estimate what a multi-step AI agent costs per task. This page does exactly that with an interactive calculator, so instead of guessing you get a concrete monthly cost grounded in today's provider prices.
Results update automatically as you type.
- LLM cost / run
- $0.0337
- Tool cost / run
- $0.0000
- Per run
- $0.0337
- Per month
- $506.25
Why this isn't trivial
The part people underestimate: agents re-send growing context on every step, so cost grows faster than the number of steps suggests. In practice the biggest savings come from pruning context between steps and limiting the maximum step count, so it is worth modelling before you commit.
How it's calculated
We estimate this by summing the input and output token cost across each agent step and adding any per-tool-call fees. Every figure uses the current provider prices baked into the site (reviewed daily), and you can override any input to match your own assumptions.
Frequently asked questions
Why do agents cost more than a single call?+
Each step resends accumulated context, so a 5-step task can cost far more than 5 single prompts.
How do I bound agent cost?+
Cap steps, summarize intermediate state, and stop early when the goal is met.
Are these prices up to date?+
Yes. The model prices behind this calculator are refreshed and reviewed daily, so your estimate reflects current provider rates rather than a stale snapshot.
Related
Estimates for planning. Pricing data last reviewed 28 July 2026.