Involving subject matter experts in AI projects is essential because they provide the domain knowledge and contextual judgment that ensures model outputs are accurate, relevant, and aligned with real-world expectations. Annotation Queues in Opik make it simple for subject matter experts (SMEs) to review and annotate agent outputs. This feature streamlines the human-in-the-loop process by providing easy queue management, simple invitation flows, and a distraction-free annotation experience designed for non-technical users.

Annotation Queues are collections of traces or threads that need human review and feedback. They enable you to organize content for review, share with SMEs easily, collect structured feedback, and track progress across all your evaluation workflows.
Each annotation queue is defined by a collection of traces or threads, evaluation instructions, and feedback definitions:
Navigate to the Annotation Queues page in your project and click Create Queue.

Configure your queue with:
You can add items to your queue in several ways:
From Traces/Threads Lists:
From Individual Trace/Thread Details:

Once your queue is set up, you can share it with SMEs:
Copy Queue Link:
SME Access Required: Subject matter experts must be invited to your workspace before they can access annotation queues. Make sure to invite them to your project first, then share the queue link.
When SMEs access a queue, they experience a streamlined, distraction-free interface designed for efficient review.

The annotation workflow begins with clear instructions and context, allowing SMEs to understand what they’re evaluating and how to provide meaningful feedback.

The SME interface provides:
You can create and manage annotation queues programmatically using the Python or TypeScript SDK. This is useful for automating the process of adding items to queues based on specific criteria.
You can learn more about Opik’s annotation and evaluation features in: