LangSmith
For LangSmithAI Platform

Langgraph Platform And Studio

LangSmith · LangSmith

LLM Observability & Evaluation Platform — LangSmith (LangChain)

Evaluates LangSmith's LangGraph Platform & Studio 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 to deploy a LangGraph app to LangGraph Platform so traces land in LangSmith automatically.

Define langgraph.json with the graph entry, push via the LangGraph CLI / Platform UI, and link the deployment to a LangSmith project. LangGraph runtime emits traces using the same @traceable / RunTree machinery so the LangSmith UI shows node-level spans. [REQUIRES-VERIFICATION] on exact CLI flags a…

Pass / FailAi Platformhigh
02

A graph node requires human approval before proceeding (e.g., 'send email' step). Operator uses LangGraph interrupts.

Set an interrupt_before / interrupt_after for the gated node. The graph pauses with a recoverable checkpoint. Surface the pending state to the human via Studio or an integrated app; on approval, resume by passing the thread_id. The pause is fully recorded as a span in LangSmith.

Pass / FailAi Platformcritical
03

User has a multi-day conversation. Operator wants the LangGraph thread to persist state and the LangSmith Threads view to group all turns.

Use LangGraph's thread checkpointer (Postgres or built-in) with a stable thread_id keyed on the user/conversation. Every node run inside that thread carries the same thread_id metadata so LangSmith's Threads view groups all turns. Do not generate a new thread_id per turn.

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
  • Langgraph Platform And Studio

Recommended for

LangSmithLangSmith customers

Works with

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Frequently asked questions

What does the Langgraph Platform And Studio eval for LangSmith LangSmith test?+

Evaluates LangSmith's LangGraph Platform & Studio 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 Langgraph Platform And Studio 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 Langgraph Platform And Studio 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 Langgraph Platform And Studio 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.