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Issue: Unable to read run using langsmith_client.read_run(run_id)

bugSomething isn't workingSomething isn't working

sdk

Status: Open.

#2872 In langchain-ai/langsmith-sdk;

· Saurav Jain (sauravj) opened on May 11, 2026

DOC: on langsmith evaluate an application's intermediate steps，child_runs of the run/rootRun is null

sdk

Status: Open.

#2852 In langchain-ai/langsmith-sdk;

· shenat opened on May 6, 2026

Bug: Incompatibility between GPT-5.4 "Responses API" and UI-forced reasoning_effort parameter

bugSomething isn't workingSomething isn't working

sdk

Status: Open.

#2826 In langchain-ai/langsmith-sdk;

· EliYagel opened on Apr 29, 2026

DOC: Python pip install command for Claude Agent SDK uses single quotes and fails when copied in Windows Command Prompt

sdk

Status: Open.

#2736 In langchain-ai/langsmith-sdk;

· Tej (varuntej07) opened on Apr 18, 2026

Extreme lagging on Langsmith Playground

sdk

Status: Open.

#2719 In langchain-ai/langsmith-sdk;

· ErzErzHerzog (upwindgso) opened on Apr 15, 2026

LangSmith UI Issue: Images/Pictures no longer rendered in traces

sdk

Status: Open.

#2687 In langchain-ai/langsmith-sdk;

· Andrej Ilievski (andrej-ilievski) opened on Apr 9, 2026

Bug: Cannot save edited prompt back to Prompt Hub after opening trace run in Playground

sdk

Status: Open.

#2671 In langchain-ai/langsmith-sdk;

· Backend & AI Systems Engineer · Founder @ Prema Vision (denyskorolkov) opened on Apr 8, 2026

Issue: Different in run-time between development type and production type

sdk

Status: Open.

#2641 In langchain-ai/langsmith-sdk;

· Cuong Hoang (cuonghoang96) opened on Apr 1, 2026

Clarvia AEO integration — pre-flight tool quality checks with LangSmith

Status: Open.

#2637 In langchain-ai/langsmith-sdk;

· digitamaz opened on Mar 31, 2026

Issue: OpenAI Flex pricing only partly applied

sdk

Status: Open.

#2615 In langchain-ai/langsmith-sdk;

· David Gilbertson (davidgilbertson) opened on Mar 25, 2026

Multi-turn online evaluator should re-evaluate threads when new messages arrive after idle timeout

sdk

Status: Open.

#2603 In langchain-ai/langsmith-sdk;

· Elias Englesson (eenglesson) opened on Mar 22, 2026

Feature Request: Custom Input Rendering for Annotation Queues

sdk

Status: Open.

#2593 In langchain-ai/langsmith-sdk;

· jdudekBC opened on Mar 18, 2026