Glossary · Getting Started
Quick answer
A negative prompt is a list of things you tell an AI model to avoid — such as "blurry, extra fingers, watermark, text." While the main prompt describes what should appear, the negative prompt suppresses unwanted elements. Not every model supports it: some video models accept explicit negative prompts, while others rely entirely on positive phrasing.
Negative prompts emerged from image-generation workflows, where they became a standard way to clean up recurring artifacts like distorted hands, duplicated limbs, or accidental text in the frame.
When a model does not expose a negative prompt field, you can often get a similar effect by phrasing the positive prompt more tightly — describing exactly what should be in frame leaves less room for the model to improvise.
If a generation comes back with an unwanted element, the quickest fixes are adding it to the negative prompt (where supported), rewording the main prompt, or simply regenerating with a different seed.
VdoBloom starts you with 10 free credits — enough to put this into practice with no card required.
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