AI Security Lab Irregular Raises $80 Million to Vet Frontier Models
The funding round, led by Sequoia Capital and Redpoint Ventures, will help the startup test advanced AI systems from partners like OpenAI and Anthropic before public release.
Irregular, a startup describing itself as the world's first frontier AI security lab, announced on September 17, 2025, that it has raised $80 million in a new funding round. The investment was led by Sequoia Capital and Redpoint Ventures.
## Proactive Security for Advanced AI
The company partners directly with leading AI labs, including OpenAI and Anthropic, to conduct offensive security testing on their most advanced models before they are released. Irregular runs controlled simulations to identify potential misuse vectors and assess the models' resilience to attack.
This "red-teaming" approach is designed to build security into the foundation of …
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