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Free AI assisted website trust checker. Instantly verify if a website is legitimate, safe, and trustworthy with our comprehensive analysis.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | verified.fyi | diffyn.com |
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| Company | 2026 | — |
| Listed in |
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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Overall verdict
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing verified.fyi and Diffyn.
verified.fyi's answer
We combine over 10 independent signals (WHOIS, SSL, DNS, Google Safe Browsing, on-page content, Wayback history, and more) and use an LLM to turn them into a plain-English trust report — not just a red/green badge.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
verified.fyi's answer
It's free, instant, and transparent. Every score is broken down by signal with the raw evidence shown, so you can see why a site looks trustworthy (or doesn't) rather than trusting a black-box rating.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
verified.fyi's answer
Go (single-binary server), SQLite with WAL for caching, and LLMs via OpenRouter for the analysis layer. Checks run concurrently; templates and assets ship embedded in the binary.
Diffyn's answer:
React, Next.js, POSTGRESQL
verified.fyi's answer
Shoppers checking an unfamiliar storefront, journalists and researchers vetting sources, and small-business owners who want a public trust report for their own domain.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
verified.fyi's answer
Built by Oxygem LLP after one too many "is this site legit?" questions from friends and family. Existing tools were either paywalled, spammy, or just aggregated shallow signals — we wanted an honest, explainable second opinion.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
verified.fyi's answer
verified.fyi is a free public tool rather than a B2B product — reports are generated on demand for anyone who visits. No customer list to name.
Share your experience with using verified.fyi and Diffyn. For example, how are they different and which one is better?
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