PromptBase vs PromptsGenii

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan: Neither — PromptBase has paid plans only, PromptsGenii has paid plans only
Best fit: PromptBase: Designers hunting a consistent house style across a batch of images · PromptsGenii: Reverse-engineering a prompt from a reference image
Platforms: PromptBase: Web · PromptsGenii: Chrome extension, Web
Trust score: About even — PromptBase 82, PromptsGenii 81
Status: We could not check PromptBase — its site turns automated checks away; PromptsGenii was up on Oct 15, 2026

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

PromptBaseMarketplace for buying and selling generative model prompts

PromptsGeniiBrowser extension that builds image prompts from reference pictures and 15+ categories of visual filters.

Side by side

Fact	PromptBase	PromptsGenii
Category	Prompt Engineering & Libraries	Prompt Engineering & Libraries
Pricing model	Paid	Paid
Starts at	—	$49 once
Trust score	82 / 100	81 / 100
Platforms	Web	Chrome extension, Web
Company	PromptBase	MagicMakersLab
Launched	2022	—
Last verified	Oct 25, 2026	Oct 15, 2026

What our research says

PromptBase

Worth a look if you want a shortcut to a specific visual style and would rather not reverse-engineer it, or if you have a genuinely repeatable prompt to monetize. As a buyer you are paying for text whose output shifts every time the underlying model updates, so treat prompts as perishable rather than as assets.

Pros

Unit prices are low, typically single-digit dollars per prompt
0% commission on your own referral-link sales versus 20% on marketplace traffic
Covers a broad model spread including image, text and video systems
Stripe payouts rather than money trapped in an internal wallet

Cons

Prompt quality is largely unvetted and results drift as models update
Preview images are seller-supplied and not independently reproduced
No public API found, so nothing here slots into an automated pipeline
The Select subscription only pays off at genuinely high prompt volume

PromptsGenii

The pitch is that picking a style from a visual list beats remembering prompt vocabulary, and the image-to-prompt step is the genuinely useful part - reverse-engineering a reference you already like. A one-time $49 licence with no recurring fee is unusual and worth something. The risk is the flip side of lifetime pricing: no recurring revenue means no guarantee anyone keeps it current.

Pros

Converts an uploaded image into a starting text prompt
More than fifteen filter categories - artists, architecture, styles - to layer onto a prompt
Refines prompts through OpenAI or Gemini, so you are not tied to one model's phrasing
One-time licence with no recurring charge, and seat packs for teams
Public roadmap and changelog show what is being worked on

Cons

Chrome and Edge only - no Safari, Firefox or standalone app
Lifetime pricing means future updates depend entirely on the vendor's goodwill
MagicMakersLab publishes no country, address or team
$49 up front with no free tier visible to test the filters first

Which one fits

Choose PromptBase if you need

Designers hunting a consistent house style across a batch of images
Prompt sellers with an audience who want checkout and payouts handled for them
Studying how other people structure prompts for a specific model

Choose PromptsGenii if you need

Reverse-engineering a prompt from a reference image
People who prefer picking styles from a list over writing prompt text
Small teams sharing seats through the built-in licence manager