Reddit is now using artificial intelligence to catch spam that was created by artificial intelligence. On July 6, 2026, the company announced it's blocking 23 million spam posts daily and catching around 25,000 new fake posts and comments every day.

Why is this happening now? For years, Reddit's spam filters worked by recognizing patterns — they'd spot the same fake links or the same crude messages repeating over and over. That worked when spam was dumb and obvious. But generative AI changed the game. Now someone can write a tool that creates hundreds of believable, natural-sounding fake posts in seconds. The old filters don't know what to look for because the fake posts look real. Reddit's solution is to use AI not to write posts, but to recognize which posts are coordinated fakes and artificial hype.

Reddit says it reduced spam exposure for users by 20% between January and March 2026, compared to the previous three months. That's a significant improvement, though Reddit is measuring its own results, so the number is from the company itself.

This is actually an ongoing battle, not a solved problem. Every time Reddit gets better at catching fake posts, the people making those fake posts will study Reddit's announcement and find ways around it. It's a continuous back-and-forth. That's worth keeping in mind when you see reports of success — they're snapshots of a particular moment, not permanent victories.

Reddit has an advantage that other platforms might not. Reddit's content has been used to train AI systems for years, which became a legal issue when Reddit went public. The flip side is this: because Reddit understands its own content so well, it can build better tools to spot what doesn't belong.

The numbers put the scale of the problem into perspective. Reddit has hundreds of millions of monthly users and more than 100,000 active communities. When 25,000 fake posts slip through daily, that's not overwhelming — but each one targets a specific community. Coordinated fake posts don't just clutter your feed; they're designed to shift what a community believes or how it feels. That's why AI-based spam is subtler and trickier than simple link spam.

Reddit isn't the only platform dealing with this. Facebook, X, and others are also testing AI-based detection systems because traditional spam filters don't work fast enough anymore. The big question is whether running these AI filters stays cheap enough to do at Reddit's size. Reddit didn't say.

For now, the 20% improvement is real but temporary. What matters next is whether Reddit's teams can update their detection systems faster than spam operators can redesign their tools. That's a question with no public answer yet.