Skip to content
effecthub

FlowGPT vs PromptBase

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. PromptBase publishes a starting price ($19); FlowGPT does not. Only FlowGPT has a free tier.

FlowGPTCommunity library of AI prompts and roleplay charactersPromptBaseMarketplace for buying and selling generative model prompts

Side by side

FactFlowGPTPromptBase
CategoryRoleplay & Character ChatPrompt Engineering & Libraries
Pricing modelFreemiumPaid
Starts at—$19 month
Public APINoNo
PlatformsWebWeb
CompanyKaon (formerly FlowGPT)PromptBase
Launched20232022
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

FlowGPT

Come here for character roleplay and to see what prompts real people actually run, not for a curated prompt resource you would use at work. The catalogue is unmoderated, much of the front page is adult roleplay, and the original prompt-engineering angle has largely been abandoned.

Pros

  • genuinely large user-generated catalogue with voting, bounties and leaderboards
  • the free tier covers most chat use without a card
  • prompts and characters run in place, so you can test before copying anything out

Cons

  • no quality control, so duplicate and low-effort entries dominate discovery
  • the useful prompt-library function has been crowded out by roleplay characters
  • no API and no export, so nothing you build here moves to another stack
  • the operating company has rebranded and spread across other consumer apps, which puts the site's roadmap in question

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 API, so nothing here slots into an automated pipeline
  • $19/month Select only pays off at genuinely high prompt volume

Which one fits

Choose FlowGPT if you need

  • browsing community-made roleplay characters and persona bots
  • sampling how other people phrase prompts before writing your own
  • casual free access to several models through one interface

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

More comparisons

All FlowGPT alternatives →All PromptBase alternatives →Browse all Roleplay & Character Chat →