---
title: "Free Developer Tools: AI Cost Calculator & Webhooks"
description: "Small, focused calculators and utilities for people wiring WordPress to other systems — starting with an AI cost calculator covering 36 LLM models."
url: "https://wpwebhooks.org/tools/"
---

[WP Webhooks](https://wpwebhooks.org/)/ Tools

/Tools

# Developer tools

Small, focused utilities for people wiring WordPress to other systems. Free, no sign-up, everything runs in your browser.

AI

AI API Cost Calculator

Set input and output tokens, pick from 36 models across OpenAI, Google, Anthropic, Moonshot, DeepSeek and Z.ai, and see the per-call, monthly and annual bill — plus the token-linked credit charge if you resell it.

[Use →](https://wpwebhooks.org/tools/llm-cost-calculator/)

/Ready

## Your next automation is  
one sentence away.

[Install Plugin→](https://wordpress.org/plugins/flowsystems-webhook-actions/) [See the Plugin →](https://wpwebhooks.org/wordpress-webhook-plugin/)

$ wp plugin install flowsystems-webhook-actions --activate

## Structured data

```json
{"@context":"https://schema.org","@type":"ItemList","name":"Developer tools","url":"https://wpwebhooks.org/tools/","numberOfItems":1,"itemListElement":[{"@type":"ListItem","position":1,"name":"AI API Cost Calculator","url":"https://wpwebhooks.org/tools/llm-cost-calculator/"}]}

{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"WP Webhooks","item":"https://wpwebhooks.org/"},{"@type":"ListItem","position":2,"name":"Tools","item":"https://wpwebhooks.org/tools/"}]}
```