AI & LLM Workflow Utilities

Supercharge Your LLM Workflows

Free, fast, private, browser-based tools for prompt engineering, cost estimation, context compression, data formatting and more — no sign-up required.

Explore Tools

Our AI Tools

AI Token Cost Estimator

Calculate real-time costs for GPT-4o, Claude 3.5, Gemini, etc.

System Prompt Optimizer

Turn rough instructions into clean, high-performance system prompts

JSON-to-Training Data Converter

Format datasets ready for fine-tuning

AI Text Humanizer

Make AI-generated text sound more natural

Prompt Chain Builder

Create multi-step reasoning chains

Context Window Packer

Compress long text to fit model context limits

Hallucination Checker (sim)

Basic consistency & factuality simulation

LLM VRAM Calculator

Estimate GPU memory needed for models

Image Prompt Extractor

Try to recover prompt from AI-generated image (sim)

Agent Workflow Simulator

Test simple agent logic flows

Why Choose These Tools?

100% Client-Side

Your data never leaves your browser — complete privacy.

No Login • No API Keys

Just open and use — zero setup.

Fast & Lightweight

Optimized vanilla JS — works even on low-end devices.

Built for AI Builders

Created by and for prompt engineers, developers & researchers.

© 2025–2026 AI & LLM Workflow Utilities • Made with privacy in mind

Scroll to Top