PromptBase is a marketplace where prompts are bought and sold, with a catalogue in the hundreds of thousands covering ChatGPT, Midjourney, Gemini and other models. It was among the first products to treat prompts as a tradeable good, which is a genuinely novel market that did not exist before generative models.
The buyer's case is strongest in image generation, where the gap between a casual prompt and an expert one is enormous and visible. Buying a proven prompt for a specific style is a reasonable shortcut compared with many hours of trial and error, particularly for a one-off need.
The seller side gives prompt engineers a direct route to monetise skill. Two caveats worth knowing: prompt effectiveness degrades as models are updated, so a prompt bought today may work differently after the next model release, and quality varies across the catalogue. Subscription access starts around nineteen dollars a month.
