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PromptBase vs TwainGPT

PromptBase starts at $1.99; TwainGPT starts at $8/mo. Here is how they compare on price, free plan, API and what each does well.

PromptBase vs TwainGPT

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PromptBase

Natural Language Processing

Pricing

Starts at $1.99
Free plan: No
API: No

Good

Vast library of 150,000+ curated AI prompts
User-friendly platform for buying, selling, and sharing prompts
Monetization opportunities for prompt creators

Watch out

Limited pricing options for prompts
20% commission on sales reduces seller revenue
Support for a limited number of AI models

Try PromptBase (opens in a new tab) Full listing PromptBase

TwainGPT

AI Copywriting

Pricing

Starts at $8/mo
Free plan: Yes
API: No

Good

Combines AI humanization, AI detection, and writing generation in one workflow
Detector page is available directly from the public site
Pricing page clearly lists word and detector-use limits for paid tiers

Watch out

No public API or dedicated mobile app was confirmed
Detector and bypass-related claims should be treated as vendor claims rather than guarantees
Current paid prices shown on the public pricing page are annual-billing prices

Try TwainGPT (opens in a new tab) Full listing TwainGPT

Line by line

From each listing	PromptBase	TwainGPT
Starts at	$1.99	$8/mo
Free plan	No	Yes
API	No	No
Mobile app	No	No
Category	Natural Language Processing	AI Copywriting
Listing checked	Oct 18, 2024	May 31, 2026

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