But why would cloudflare advertise Anthropic? They are competing with Anthropic by hosting open weights models.

They got privileged early access to an unreleased frontier model to harden their systems, with Anthropic engineer support, and likely were able to use it to make other product optimizations tangential to security too. A blog article afterwards is a cheap price for unlocking that access, regardless of how well it paid off.

https://www.cloudflare.com/press/press-releases/2025/cloudfl...