LangChain Changelog

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February 2025

New ingest-backend service for faster LangSmith performance

We've launched a new dedicated Go service called 'ingest-backend' to handle all run and feedback ingestion in LangSmith. This architectural improvement...

February 26, 2025

⚖️ Start Evaluating LLMs with OpenEvals

Evals are a vital part of bringing LLM apps to production. To make it easier to get started, we launched a new OSS repo: OpenEvals ! OpenEvals contains...

February 26, 2025

📊 Group LangSmith experiments by metadata to get valuable insights

We’ve added a new view that allows you to group experiment results by metadata. Compare the performance of your evaluations across different segments (eg....

February 25, 2025

Saved workspace secrets in LangSmith Playground

You can now use secrets saved in your workspace in the LangSmith Playground. Teams can use the same centralized keys used for evaluators to also experiment...

February 20, 2025

LangSmith LangGraph

LangSmith Playground integration with LangGraph Studio

You can now open LLM runs from LangGraph Studio in the LangSmith Playground, making it easier to debug, visualize, and refine your agents. This is an early...

February 8, 2025

📊 New LangSmith experiment view for result analysis

The new LangSmith experiment view is now live, which makes it easier to explore your results. Use the experiment view to analyze the results and draw...

February 4, 2025

January 2025

Waterfall graphs to spot latency bottlenecks in LangSmith

You can now visualize traces as a waterfall graph for deeper insights into your app’s latency in LangSmith. Use the waterfall graph to: Try it out today:...

January 30, 2025

Pytest and Vitest integrations for evaluations in LangSmith

Evaluations (evals) are crucial for building reliable, high-quality LLM applications. They ensure consistent performance, much like tests in software...

January 22, 2025

New LangSmith Playground features to streamline workflow

The LangSmith Playground has several new updates, including: New Prompt Settings UI All your prompt settings are now organized in one streamlined view. You...

January 20, 2025

December 2024

🔍 Diff view in LangSmith's prompt hub

We’ve added a new Diff View feature in LangSmith’s Prompt Hub. As prompts evolve, keeping track of changes can get tricky—especially when iterating rapidly....

December 17, 2024

Jump to Month: April 2025; March 2025; February 2025; January 2025; December 2024; November 2024; October 2024; September 2024; August 2024; July 2024; June 2024; May 2024; March 2024; February 2024; October 2023

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