LangSmith
For LangSmithAI Platform

Online Monitoring And Feedback

LangSmith · LangSmith

LLM Observability & Evaluation Platform — LangSmith (LangChain)

Evaluates LangSmith's Online Monitoring & Feedback across 9 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's LLM Observability & Evaluation Platform eval coverage.

About LangSmith

LangSmith is LangChain's LLM observability and evaluation platform: tracing, datasets, evaluators (LLM-as-judge, code, and human), experiments, prompt management, and online monitoring used by AI teams to measure and improve LLM apps in production.

Employees

~200

Industry

LLM Observability

Headquarters

San Francisco, CA

Sample tests· showing 3 of 9

#InputExpected behaviorCheck
01

Operator wants a Slack alert when error rate on a production project exceeds 5% over a 10-minute window.

Create a project-scoped alert rule: metric='error_rate', threshold=0.05, window=10m, recipients=[slack-webhook]. The rule fires only when both threshold and window conditions are met. Use a separate alert rule per severity (warning vs page). Confirm via the 'test alert' button in UI.

Pass / FailAi Platformhigh
02

Operator wants to page when LLM-run P99 latency exceeds 8 seconds over 5 minutes.

Configure a latency alert with metric='p99_latency_ms', threshold=8000, window=5m. Scope to run_type='llm' to exclude tool runs. Bake a [REQUIRES-VERIFICATION] note on the exact metric key string against current alerting docs; LangSmith's alert metric names evolve.

Pass / FailAi Platformhigh
03

Operator wants to catch a cost spike (>$500/hour) before the monthly invoice.

Set a cost alert: metric='total_cost', threshold=500, window=1h, recipients=[finance-channel]. Combine with a project filter so per-tenant spikes are isolated. Pair with usage_metadata correctness eval so the cost rollup is trustworthy.

Pass / FailAi Platformhigh

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How this eval is graded

Grade against expected.ideal_behavior and expected.rubric. Per-criterion pass requires mean >= 4.0 and no criterion below 3.

Rubric criteria

  • Langsmith
  • Ai Platform
  • Online Monitoring And Feedback

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LangSmithLangSmith customers

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Frequently asked questions

What does the Online Monitoring And Feedback eval for LangSmith LangSmith test?+

Evaluates LangSmith's Online Monitoring & Feedback across 9 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's LLM Observability & Evaluation Platform eval coverage.

How is the Online Monitoring And Feedback eval scored?+

The judge rubric: Grade against expected.ideal_behavior and expected.rubric. Per-criterion pass requires mean >= 4.0 and no criterion below 3.

How many test cases does this eval pack include?+

The Online Monitoring And Feedback pack for LangSmith LangSmith contains 9 test cases. 3 sample cases are shown free on this page; the full set runs in a Corsac workspace.

How do I run this eval?+

Sign up for Corsac, connect your model or agent endpoint, and run the Online Monitoring And Feedback pack as-is or after customizing thresholds. Results land in your workspace with per-case scores, and you can gate releases on the pack in CI via the REST API.

Run this eval in your workspace

Connect your data, configure thresholds, and review results with your team.