AI Chatbot Cost Calculator
Estimate the monthly cost of running an AI chatbot at scale.
Results update automatically as you type.
- Per message
- $0.00627
- Per session
- $0.0501
- Input cost / session
- $0.0301
- Output cost / session
- $0.0200
- Per day
- $50.13
- Per month(1,000 users/day)
- $1,503.75
Estimate what it costs to run an AI chatbot. Because conversation history grows with every turn, cost per message rises through a session. Set your users, messages, and how you manage history to see a realistic monthly total.
How this is calculated
This calculator uses the api cost 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:
- Per message
- $0.00627
- Per session
- $0.0501
- Input cost / session
- $0.0301
- Output cost / session
- $0.0200
- Per day
- $50.13
- Per month(1,000 users/day)
- $1,503.75
Frequently asked questions
Why does chatbot cost grow within a session?+
Most chatbots resend the conversation so far on every turn. That means later messages carry more input tokens, so the per-message cost climbs unless you trim history.
How do I cut chatbot cost?+
Use a sliding window or summarized history, enable prompt caching for the system prompt, cap response length, and route simple messages to a cheaper model.
Does streaming change the cost?+
No. Streaming only changes how tokens are delivered; you still pay for the same input and output tokens.