---
title: "AI Build vs Buy Calculator (API vs Self-Host)"
method: POST
path: "/api/v1/tools/ai-build-vs-buy-calculator"
tags: ["ai"]
---

# AI Build vs Buy Calculator (API vs Self-Host)

`POST /api/v1/tools/ai-build-vs-buy-calculator`

## Request

- Base URL: `https://calcfleet.com`
- URL: `https://calcfleet.com/api/v1/tools/ai-build-vs-buy-calculator`
- Auth: none declared

Compare the monthly cost of a hosted LLM API against self-hosting on your own GPUs. Find the break-even token volume and see which option is cheaper for you.

## Request body

- object
  - `apiPricePerMtok` number, required
  - `selfHostFixedPerMonth` number, required
  - `tokensPerMonth` number, required

## Response `200`

Successful calculation result.

- object
  - `result` object, required: Structured calculation output (fields vary per calculator).

## Other responses

- `400`: Invalid input — the issues array contains Zod validation errors.
- `403`: Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.
- `404`: Unknown tool slug.

---

[API](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api.md) · [All operations](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api/revisions/cd9abd595bbe?raw)