How much does an AI chatbot cost per month?

For 100 conversations/day: $1-18/month on budget models. For 1,000 conversations/day: $12-180/month. For 10,000 conversations/day: $126-1,800/month. The cheapest option is DeepSeek V4 Flash at $1.26/month for 100 conversations/day.

What is the cheapest AI model for a chatbot?

DeepSeek V4 Flash at $0.14/$0.28 per million tokens is the cheapest quality chatbot model. At 100 conversations/day with 1K input + 500 output tokens, it costs about $1.26/month. Gemini 2.5 Flash-Lite ($0.10/$0.40) is the second cheapest at $1.50/month.

Is an AI chatbot cheaper than a human support agent?

Yes, dramatically. A human support agent costs $3,000-5,000/month. An AI chatbot handling the same volume costs $1-15/month on budget models — that's 99.5-99.97% cheaper. Even premium AI models like Claude Haiku at $18/month are 99.4% cheaper than a human.

AI Chatbot Cost Calculator

Enter your conversation volume and tokens — see exactly what your AI chatbot will cost across all 79 models, compared to human agents and SaaS tools.

Your Chatbot Usage

Conversations per Day

Average chat sessions per day

Input Tokens per Conversation

System prompt + user message + history

Output Tokens per Conversation

Average bot response length

Chatbot Type

Cheapest Option

$1.26

DeepSeek V4 Flash

vs. Alternatives

AI Bot (cheapest)$1.26/mo

Human Agent (part-time)$1,500/mo

Human Agent (full-time)$3,500/mo

SaaS Chatbot Tool$50-500/mo

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AI Chatbot Cost Calculator

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