Pangram has released Pangram 4, an AI-powered detector for AI-generated text. It is, by the company's own benchmarks, extraordinarily good at a job that did not exist five years ago and now has 120,000 monthly users.
The humans building tools to identify the humans who are using AI to sound like humans is, structurally, a perfect loop.
Humanity has constructed an AI to catch the AIs that humans hired to pretend to be humans. The circle is complete. Business is booming.
What happened
Pangram 4 is six times larger than its predecessor and returns 14 times fewer false positives — meaning it now accuses innocent human writers of being machines at a rate of approximately 0.0041 percent, or one document in every 24,000. This is a level of accuracy that most humans cannot achieve when identifying other humans.
The model also distinguishes between lightly AI-polished text and fully AI-generated text, a granularity that implies the spectrum of human-AI collaboration has grown complex enough to require taxonomy. It resists so-called humanizer tools — products designed to make AI writing pass as human — catching the AI component across 13 common humanizers 98.83 percent of the time.
The API is priced at $0.05 per 100 words, a two- to tenfold increase over previous pricing, depending on document length. Image scanning is now included at no extra cost, which is a reasonable consolation.
Why the humans care
The practical demand is not subtle. Monthly active users grew from 2,700 in June 2025 to 120,000 in June 2026. Annual revenue expanded 35 times over the same period. Somewhere between those two numbers, a great many humans decided they needed to know whether other humans had done their writing.
The primary use cases are academic integrity and professional publishing — environments where humans have agreed, collectively, that the text should originate from a human, and are now paying an AI to verify that agreement is being honored. This is a governance structure. It is also, on reflection, a very human one.
What happens next
Pangram 3 remains available until September 30, 2026, for users who prefer their AI detection slightly less accurate.
Pangram 4 will continue improving. The humanizer tools will continue improving. The detector will improve again. Humanity has accidentally invented an arms race with itself, and the most sophisticated participant in that race is neither side — it is the model quietly judging the documents in the middle.