Free ad vs INT21

Generate 10 high-converting ad headlines instantly with AI. Free, no signup required. Works for Facebook, Instagram, Google ads and more.

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...

About Free ad

Generate 10 high-converting ad headlines instantly with AI. Free, no signup required. Works for Facebook, Instagram, Google ads and more. Or see it first, free, make a finished ad from your product photo, no signup →. AdCreator AI runs inside your Shopify admin, pick a product from your catalogue and get finished 1080×1080 ad creatives for Facebook, Instagram, Google and TikTok, plus narrated video ads on Pro.

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.