INT21 vs InterviewWatch

We are building self-improving AI systems for the software beneath modern AI. Our first product generates and optimizes low-level GPU software, then proves its work with...

The InterviewWatch agent flags AI assistance, hidden overlays, extra displays and remote control during a live interview, then signs a tamper-evident report.

About INT21

We are building self-improving AI systems for the software beneath modern AI. Our first product generates and optimizes low-level GPU software, then proves its work with tests and benchmarks. Today, we are launching INT21: the first company to achieve self-improving AI agent swarms, applied to AI infrastructure. That software has an outsized effect on speed and cost. The first four implementations produced by PTX Kernel Factory are open source today. The product is also entering beta, with early access available at int21.ai.

About InterviewWatch

The InterviewWatch agent flags AI assistance, hidden overlays, extra displays and remote control during a live interview, then signs a tamper-evident report. An agent runs on the candidate's machine during the interview and flags AI assistants, hidden overlays, remote control and virtual devices as they appear. Why it matters Interview cheating stopped being an edge case. If your interviews aren't monitored, you may already be extending offers on answers that were never the candidate's. Across 19,368 technical interviews, 38.5% of candidates were flagged for AI-assisted cheating, and the rate climbed from 9% to 45% in a single quarter.