GPT Prompt Analyzer: Compare Outputs and Costs Instantly

A simple, focused utility for anyone working with GPT prompts (GPT-3.5, GPT-4o, GPT-4.1) who wants to iterate faster, smarter, and with more clarity.
Ideal for API users who need to manage token costs and optimize outputs. Also useful for anyone designing better prompts for ChatGPT or other GPT-based tools.
This is an early-stage tool designed to do one thing well: compare GPT prompt outputs and costs quickly, with minimal distraction. More improvements will be added based on user feedback.

✅ Use it to

• Test different prompt versions and compare results instantly
• See outputs side by side with a similarity score
• Estimate token usage and cost (GPT-3.5, GPT-4o, and GPT-4.1 supported)
• Reduce trial and error by seeing what actually changes

✅ How it works

• Fully browser-based. Runs on Streamlit Cloud, no install required
• Access included immediately after purchase
• Unlimited usage while the app remains hosted
• Free updates as new features are added

Built for prompt engineers, developers, marketers, and creators who want a faster, clearer way to improve prompts without guesswork.