# LLM Architecture Cost Modeler

> A free tool for modeling the realistic total cost of LLM-powered applications before you ship.

This tool helps developers estimate the true cost of running an LLM app in production, accounting for retries, prompt caching, batch API discounts, infrastructure overhead, and growth scenarios.

## Models supported

- GPT-5.4
- GPT-5.4 mini
- Claude Sonnet 4.6
- Claude Haiku 4.5
- Gemini 2.5 Flash
- DeepSeek V4 Flash

## Archetypes supported

- Simple chatbot
- Chatbot with history
- RAG pipeline
- Coding assistant
- Document processor
- Multi-step agent

## Features

- Naive vs realistic cost comparison
- Cascading retry modeling for agent and RAG archetypes
- Growth scenario projection (1x, 3x, 10x traffic)
- Sensitivity break-even: pick two models and see the retry rate where their cost curves cross
- Shareable cost scenarios via URL
- Assumptions audit trail

## Use cases

- Estimating cost before committing to a model stack
- Comparing naive vs realistic cost estimates
- Modeling RAG pipeline, chatbot, agent, and document processor costs
- Generating shareable cost scenarios for stakeholder discussions

## Live tool

https://beforeyouship.dev