INT21 vs VibeKnow

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...

Free AI video generator that turns documents, PDFs, PPT, and URLs into polished videos with voiceover and visuals, for explainers, demos, and training.

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 VibeKnow

Free AI video generator that turns documents, PDFs, PPT, and URLs into polished videos with voiceover and visuals, for explainers, demos, and training. We handle the full production stack, not just one piece. You stay in the parts that need your taste; we handle the rest. It writes the script first, then builds every visual around the story. You shouldn't also have to learn Premiere, hire a voice actor, design title cards, color-grade, and re-export six aspect ratios, just to publish what you already finished.