Multi-Model Routing: The Highest-ROI Pattern in Your Agentic Stack
Learn how routing across multiple LLM providers cuts costs 40-85% while maintaining quality, with concrete patterns for static rules, classifiers, embeddings, and hybrid approaches.
open-agency is a free, open-source site for people building with AI. Read practical guides and use the local model calculator to choose a model for your device.
Free, open-source, and practical — no account required to get started.
Open source systems
Practical guides and a local model calculator for building with AI without hiding the human review loop.
Open source — practical guides and tools are built in public
No fluff — guides ship with working code, not slides
Built by practitioners — platform engineers and creators, not influencers
Fresh operating notes from the Open Agency guides library.
Learn how routing across multiple LLM providers cuts costs 40-85% while maintaining quality, with concrete patterns for static rules, classifiers, embeddings, and hybrid approaches.
A practical guide to designing three-layer guardrails, confidence-based escalation, and human-in-the-loop checkpoints for AI agents that actually work in production.
Context rot degrades your agent's output long before the context window fills. Here's why it happens, how to measure it, and what actually works to stop it.
The architecture pattern behind production agentic AI isn't about the model. It's about routing cheap models for retrieval and triage, reserving frontier models only for reasoning-critical paths.
A focused newsletter on open-source workflow patterns, guides, and tools for AI users.