Graded Prompts VS SofiLingo

Graded Prompts's answer

People who use AI tools for real work but don't want to fight with prompt engineering: content creators filling a posting calendar, marketers mocking up campaigns, print-on-demand sellers, self-publishing authors, and video makers. On the other side of the marketplace: prompt engineers who want to monetize their craft — they keep 85% of every sale with no listing fees.

SofiLingo's answer:

People travelling for work or tourism and needing a tool to quickly help them translate signs, labels like parking, supermarket and so on.

Graded Prompts's answer

Every prompt is human-reviewed before it can be sold: a reviewer runs it on the model it's written for with varied inputs, checks that the instructions are complete and the variables labelled, and compares the seller's example outputs to what the model really produces. Prompts that pass earn a Graded Badge; the rest go back to their creator with specific feedback. Most marketplaces publish whatever sellers upload — the grading is the whole point here.

SofiLingo's answer:

High quality translations of non-Roman alphabet like Greek, Chinese, Japanese

Graded Prompts's answer

Because the risk sits with the marketplace instead of the buyer. Listings are verified before sale, example outputs are checked against reality, every purchase includes a perpetual personal-and-commercial license, and refunds come from Graded Prompts itself as merchant of record — within three days if a prompt doesn't perform as described. Free prompts and guest checkout mean you can test the quality bar without an account or any commitment.

SofiLingo's answer:

Easy to use and works offline

Graded Prompts's answer

It started with a familiar frustration: AI credits drained on generations that came out wrong because the prompt was broken — and prompt marketplaces that publish anything, so buying one was a gamble too. Graded Prompts was built to be the marketplace we wanted to buy from, where a human tests every prompt on its real model before it goes on sale. It launched in 2026 as an independent, bootstrapped company.

SofiLingo's answer:

I was on holidays in greek and none of the options I tried including Google Translate worked very well, so deciuded ot have a go at making my own.

Graded Prompts's answer

Next.js and React on the frontend, a Java Spring Boot API, and PostgreSQL, hosted on AWS with CloudFront. Stripe handles payments and seller payouts, and the AI-powered search runs on OpenAI embeddings.