Plano

Plano is an AI-native delivery infrastructure for agentic applications, originally built by Katanemo Labs and now acquired by DigitalOcean. It sits between your agents and the LLM/tool layer as a framework-agnostic, protocol-native fabric, handling smart model routing, multi-agent orchestration, context engineering filters, jailbreak detection, and centralized policy enforcement from a single configuration file.

What differentiates Plano is that it is built on Envoy, the same battle-tested data plane proxy used by service meshes like Istio. That gives it production-grade traffic handling out of the box and lets teams move agent infrastructure concerns (routing, guardrails, traces) out of the application code and into a dedicated control plane. It's aimed at engineering teams running agents in production who want observability and policy as cross-cutting infrastructure rather than per-framework SDK glue. Pricing is not published; the project has an open-source repo and on-prem deployment is supported, with commercial offerings presumably arriving via DigitalOcean.

It is framework-friendly (works alongside whatever agent framework you're using) and language-flexible, and emits production signals usable for reinforcement learning loops. Caveat: this is infrastructure for builders, not a turnkey agent product, so expect to invest in configuration and deployment.