Pricing: input $5/1M, output $30/1M
$0.01 per message · +$0.01 per message
Monthly difference: +$53.66
AI chatbot pricing
Chatbot Cost Calculator
Use this chatbot cost calculator to estimate per-message cost and monthly API spend for AI chatbots and support assistants.
Calculate Chatbot Cost Cost
Estimate AI chatbot API costs from prompt size, expected response length and monthly message volume across popular LLM models.
No API key required. Your transcript stays in your browser.
Choose the closest chatbot type. You can adjust details in Advanced Settings.
Characters: 116Words: 22Estimated input tokens: 30Estimated token count
Output tokens are estimated based on the selected reply type and input context.
Number of chatbot messages expected each month.
Advanced Settings
i
Tokens used by the system prompt or recurring instructions in every message.
Recent chat messages included with each new chatbot request.
Average token size of each previous user or bot message.
Optional knowledge-base or document context sent with the chatbot request.
i
Percentage of input tokens expected to use provider prompt caching.
Compare the Same Workload Across Models
Compare model pricing, per-message cost, and monthly difference using the same current calculator values.
| Provider | Model | Model pricing | Cost/message | Difference/message | Monthly cost (5,000 messages/month) | Monthly difference |
|---|---|---|---|---|---|---|
| OpenAI | GPT-5.5 | Input $5/1MOutput $30/1M | $0.01 | +$0.01 | $63.13 | +$53.66 |
| OpenAI | GPT-5.4 mini Current model | Input $0.75/1MOutput $4.5/1M | $0.001894 | Current model | $9.47 | Current model |
| Anthropic | Claude Opus 4.8 | Input $5/1MOutput $25/1M | $0.01 | +$0.009481 | $56.88 | +$47.41 |
| Gemini 3.5 Flash | Input $1.5/1MOutput $9/1M | $0.003788 | +$0.001894 | $18.94 | +$9.47 | |
| DeepSeek | DeepSeek V4 Flash Lowest estimated cost | Input $0.14/1MOutput $0.28/1M | $0.000211 | Save $0.001683 | $1.05 | Save $8.42 |
Pricing: input $0.75/1M, output $4.5/1M
$0.001894 per message · Current model per message
Monthly difference: Current model
Current modelPricing: input $5/1M, output $25/1M
$0.01 per message · +$0.009481 per message
Monthly difference: +$47.41
Pricing: input $1.5/1M, output $9/1M
$0.003788 per message · +$0.001894 per message
Monthly difference: +$9.47
Pricing: input $0.14/1M, output $0.28/1M
$0.000211 per message · Save $0.001683 per message
Monthly difference: Save $8.42
Lowest estimated costChatbot Cost Calculator FAQ
How do I estimate chatbot API cost?
Paste a representative chat prompt or conversation context, choose expected output length and enter monthly message volume.
Why do chatbot costs vary?
Costs change with context size, response length, model choice, cached prompts and conversation volume.
Can I compare chatbot costs across models?
Yes. The comparison table estimates the same workload across the supported providers.
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