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Leonardo AI’s Content Moderation Filter: What You Need To Know

June 05, 2024
4 min read

In this post, we’ll explore Leonardo AI’s content moderation filter, a powerful tool designed to screen and manage online interactions automatically. Discover how it works, its key features, and why it’s essential for maintaining a positive user experience on your platform.

What Is Leonardo AI Content Moderation Filter?

What Is Leonardo AI Content Moderation Filter

Content moderation filters are algorithms that help platforms prevent the creation or distribution of inappropriate or harmful content. They ensure all content follows the platform’s rules and community standards.

Generative AI tools and social platforms use these filters. Let’s take ChatGPT as an example; asking a question about how to sell drugs will trigger the Chatbot to respond: “I can’t help with that.”

Similarly, Leonardo AI, as an AI image generator, has these content moderation filters to be safeguards that monitor and regulate the prompts given by users to prevent inappropriate prompting and generation.

How Leonardo AI’s Content Moderation Filter Works:

Leonardo AI’s content moderation filter has two key levels of moderation: It checks user prompts and images the AI creates. 

  • Prompt-level filtering: At this stage, the filter looks for words or phrases that might lead to inappropriate content that violates Leonardo.ai terms of use, such as nudity or violence. If it finds any, it stops the image from being made.
  • Generation/output-level filtering: Leonardo AI also examines the images it produces. If an image is considered not safe for work (NSFW), it may not be shown, or users will be asked whether they want to see it anyway. You can choose to enable or disable these image generations in your feeds by default by going to the Profile section in Settings (you must be 18 or older).

Managing Not Safe For Work (NSFW) Image Generation:

Leonardo AI uses a mix of choosing the right model and detecting explicit content to manage NSFW content. Users are encouraged to use newer models, like those in the Stable Diffusion SDXL series, which are better at detecting and flagging inappropriate content. 

The Leonardo API, similar to the Leonardo web app, automatically blocks the generation of NSFW (Not Safe For Work) images. If a prompt is identified as NSFW, it will result in a 400 Bad Request error.

If an image is flagged as NSFW after it’s created, users can choose to filter it out. For more control, users can add their own moderation systems or work with Leonardo AI for customized solutions.

Benefits of Using Leonardo AI Content Moderation Filter

Leonardo.ai specifically stated that it uses content moderation filters “…to ensure the safety of our community.” All in all, Leonardo AI offers several key benefits with its content moderation filtering:

  • Brand Protection: For businesses and organizations, Leonardo AI helps protect their brand reputation by ensuring that their online platforms remain free from harmful or offensive content.
  • Enhanced User Experience: By keeping the platform clean and respectful, Leonardo AI creates a more welcoming environment for everyone. This means new users are more likely to join and stay active while existing users have a safer and more enjoyable experience. They can share and create content without worry, leading to a more lively and diverse community.

What To Do If Your Prompt Violates Leonardo Content Moderation Filters? 

When using Leonardo.AI, it's essential to ensure your prompts meet the platform's standards to avoid triggering the content moderation filters.

When using Leonardo.AI, it’s essential to ensure your prompts meet the platform’s standards to avoid triggering the content moderation filters. Here’s a straightforward guide to help you navigate and correct any issues:


  • Use Respectful Language: Always choose words that are polite and considerate.
  • Edit Prompt Appropriately: If your prompt is flagged, revise it by removing or replacing any inappropriate terms.
  • Aim for Positive Content: Ensure your prompts encourage suitable and positive content for all audiences.


  • Attempt to Bypass Filters: Avoid using techniques like substituting symbols for letters ($ for S, @ for A) to sneak past filters.
  • Ignore the Rules: Submitting prompts that intentionally ignore guidelines continuously can lead to account suspension.
  • Manipulate Prompts for Inappropriate Content: Never try to craft prompts designed to produce offensive results.

Can Users Bypass Leonardo AI’s Content Moderation Filter?

While Leonardo AI’s content moderation filters are designed to be effective, it’s important to remember that no AI system is flawless. Leonardo AI’s content moderation filters can sometimes misidentify content, either by incorrectly blocking harmless material or failing to catch harmful content.

Here are two common methods users might attempt to bypass Leonardo AI’s content moderation filters:

  1. Alphanumeric Characters: Instead of using explicit language directly, some users replace letters in offensive words with symbols or numbers (For example, instead of writing “violence,” they might use “v1olence” or “violenc3.”). This can sometimes trick the filter into thinking the content is harmless.
  2. Text Manipulation: Users might try to alter text or images to hide explicit details. Adding extra text or blurring parts of an image can sometimes bypass AI detection. This method aims to trick the filters that look for explicit content.

While these methods can sometimes work, it’s important to note that they can have negative consequences, including temporary or permanent suspension of the user’s account.

Bottom Line

Leonardo AI’s content moderation filter is a pivotal tool for a safer, more engaging online environment. Users should not bypass these filters.

Content Manager at Avada.ai
Mike Nguyen is the Content Manager of Avada AI; with over seven years in the AI technology sector, Mike leads the content creation team at Avada AI, dedicated to showcasing the latest information related to AI technology, AI research, AI tools, etc. Mike aims to produce outstanding content that mirrors the forefront of AI innovation, machine learning, and human intelligence.
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