Cost to Power 10,000 Chatbot Conversations with LLM APIs
Calculate the real cost of using LLM APIs to power chatbot conversations. Compare all models for 10,000 conversations with verified per-million-token pricing.
⚡ Your Workload
📊 Cost Summary
Cost per conversations across 153 models
Show all 153 models in a table
| Model | Provider | Input $/M | Output $/M | Cost for 10K conversations |
|---|
How this calculator works
Each chatbot conversation (multi-turn) requires ~3,000 input tokens (system prompt + conversation history + user messages) and ~1,000 output tokens (bot responses across multiple turns). Multi-turn conversations accumulate input tokens as context grows. Longer conversations with more turns will increase input tokens per conversation.
Formula: cost = (input_tokens × input_price_per_Mtok + output_tokens × output_price_per_Mtok) × quantity / 1,000,000
All prices are per million tokens, sourced directly from official provider pricing pages and verified by our automated scraper pipeline that runs 3× daily. No fabricated numbers — every price links to its source.
Frequently asked questions
How much does it cost to run 10,000 chatbot conversations with an LLM?
Powering 10,000 chatbot conversations costs $5-20 with budget models, $40-100 with mid-tier models, and $200-500+ with frontier models. Multi-turn conversations are input-heavy because the context window grows with each message. Models with prompt caching can reduce costs significantly.
Which LLM API is cheapest for chatbots?
DeepSeek V3, Gemini Flash, and Groq-hostalled models are cheapest for chatbots. For conversational quality, mid-tier models like GPT-4.1 Mini or Claude Sonnet provide better responses. Models with prompt caching (Claude, Gemini) can cut input costs by 50-90% for multi-turn chats.
How are chatbot token costs calculated?
Each conversation uses ~3,000 input tokens (context + history) and ~1,000 output tokens (responses). Total cost = (input_tokens × input_price + output_tokens × output_price) × number_of_conversations. Prices are per million tokens from verified provider pricing.