Grammarly parent Superhuman buys AI detector GPTZero
, the company formerly known as Grammarly, said today it has agreed to acquire GPTZero Inc. , the startup whose detection tools tell teachers, editors and hiring managers when a piece of writing came from a machine. The acquisition price was not disclosed.
Key Takeaways
- SiliconANGLE UPDATED 18:30 EDT / JUNE 24 2026 AI Grammarly parent Superhuman buys AI detector GPTZero by Duncan Riley Superhuman Inc.
- GPTZero was launched in 2022 and was one of the first AI writing detectors to take off after the arrival of ChatGPT the same year .
The company says it now has 19 million registered users and around $30 million in annual recurring revenue.
- Its own detector, kept from the Grammarly days, ranks first for quality on RAID, an independent benchmark that runs detectors against more than 670,000 samples.
Two detectors trained on different data, the company argues, catch more than one.
- Coming into its acquisition, GPTZero had raised approximately $13.
5 million in venture funding, including a $10 million Series A in June 2024.
- About SiliconANGLE Media SiliconANGLE Media is a recognized leader in digital media innovation, uniting breakthrough technology, strategic insights and real-time audience engagement.
Stats & Key Facts
- #SiliconANGLE UPDATED 18:30 EDT / JUNE 24 2026 AI Grammarly parent Superhuman buys AI detector GPTZero by Duncan Riley Superhuman Inc.
- #GPTZero will be built into Superhuman Go, the company's AI assistant, which Superhuman says works across 1 million apps and websites.
- #The company says it now has 19 million registered users and around $30 million in annual recurring revenue.
- #Its own detector, kept from the Grammarly days, ranks first for quality on RAID, an independent benchmark that runs detectors against more than 670,000 samples.
SiliconANGLE UPDATED 18:30 EDT / JUNE 24 2026 AI Grammarly parent Superhuman buys AI detector GPTZero by Duncan Riley Superhuman Inc. , the company formerly known as Grammarly, said today it has agreed to acquire GPTZero Inc. , the startup whose detection tools tell teachers, editors and hiring managers when a piece of writing came from a machine.
The acquisition price was not disclosed. The acquisition is arguably ironic. Grammarly spent years building tools that help people write with artificial intelligence.
Now, under its new Superhuman name, it is buying the company best known for catching that same AI output. The rebrand in October came as Grammarly pushed past grammar correction into a wider productivity platform. Superhuman calls the purchase part of an authenticity layer, its term for tools that show where content came from and whether to trust it.
For more details please read the original article at SiliconANGLE AI.
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