AI BriefingLangSmith's Reusable Evaluators and Evaluator Templates
Key point
LangSmith has released reusable Evaluators and a library of 30+ templates to improve agent evaluation efficiency.
Details
LangChain unveiled Reusable Evaluators and an Evaluator Template Library as a new update to LangSmith Evaluation. This allows developers to consistently apply evaluation logic they've built once across multiple projects, without having to create evaluation tools from scratch every time to measure agent performance.
The newly introduced Evaluator Templates reduce the time developers spend designing evaluation logic from the ground up. Currently, more than 30 templates are provided, with the main categories as follows:
- Safety and security: Prompt injection detection, PII (personal information) checks, bias and toxicity checks
- Response quality: Accuracy, helpfulness, Tone
- Trajectory: Verifying whether the agent took the correct steps to achieve its goal
- User behavior analysis: Language distribution and user satisfaction signal analysis
- Multimodal: Audio and image review
These templates include both prompt-based LLM-as-judge evaluation and rule-based code evaluation, and can be used for both online monitoring and offline experiments. In addition, openevals v0.2.0, released alongside this update, also adds multimodal support for evaluating audio and image outputs.
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