Scanning millions of lines of code is infeasible. Mozilla uses a simple LLM to act as a 'judge,' scoring files on criteria like 'likelihood of a bug' and 'accessibility from the web.' This prioritizes where to focus the more expensive and time-consuming agentic analysis.

As you manage a fleet of agents, you cannot manually review every output. Platforms like HyperAgent use "Rubrics"—an evaluation framework where one LLM judges another's work against predefined criteria. This automates quality control, which is essential for scaling an agent-first business.

Beyond drafting documents, AI is highly effective at quality control tasks that humans often miss. Use it for proofreading, checking defined terms, and ensuring consistent formatting, which can catch subtle but important mistakes in complex agreements.

Traditional software relies on binary if-then statements. New judgment models like JEV fundamentally upgrade this by allowing those `if` conditions to understand "messy human context." This enables automation of complex processes like fraud detection, support routing, and lead scoring that previously required human interpretation of nuanced situations.

A one-size-fits-all evaluation method is inefficient. Use simple code for deterministic checks like word count. Leverage an LLM-as-a-judge for subjective qualities like tone. Reserve costly human evaluation for ambiguous cases flagged by the LLM or for validating new features.

Judgment models like JEV make traditional ML techniques like classification and regression more accessible. Companies that currently use expensive LLMs for these tasks can now use a simpler, API-driven approach that is better suited for the job, without needing to build and host complex custom models from scratch.

Instead of pursuing full automation, a powerful use case for internal agents is augmenting workflows. For example, a 'legal review' agent can screen marketing copy, approve standard material, and flag ambiguous content for human lawyers, accelerating the process without removing necessary oversight.

To manage non-deterministic AI products, Shopify created an internal tool where PMs grade AI-generated outputs. This creates a "ground truth" dataset of what "good" looks like, which is then used to fine-tune a separate LLM that acts as an automated quality judge for new features and updates.

An agent's effectiveness is limited by its ability to validate its own output. By building in rigorous, continuous validation—using linters, tests, and even visual QA via browser dev tools—the agent follows a 'measure twice, cut once' principle, leading to much higher quality results than agents that simply generate and iterate.