LangChain Changelog

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June 2024

📁 Workspaces in LangSmith for improved collaboration & organization

LangSmith now offers Workspaces to separate resources for different teams or different environments. Admins can add users to Workspaces, granting them...

🗺️ Variable mapping for online evaluator prompts

In LangSmith, you can now use any structured prompt from the LangChain Hub with customizable variables. You can personalize your inputs based on recent runs...

🛝 Enter the playground from scratch instead of from a trace or a prompt

The Playground is now its own tab in the sidebar of LangSmith. To create a new prompt , simply craft a prompt in the empty playground and click "Save As" to...

May 2024

💬 Manage private prompts without a handle

We’ve improved our SDK and LangSmith Prompts UI to make navigating prompts simpler. Now, only public prompts require a handle on creation. New accounts won’t...

🔧 Off-the-shelf online evaluator prompts to catch bad retrieval and hallucinations for RAG

LangSmith’s online evaluator (LLM-as-judge) automatically runs on production traces with a customizable prompt and automation rules. Our new off-the-shelf...

🔁 Repetitions to build confidence in your experiment results

You can now run multiple repetitions of your experiment in LangSmith. This helps smooth out noise from variability introduced by your application or from...

✂️ Dataset splits for evaluation and filtering/editing dataset examples

With dataset splits, it's easier to run evaluations on a subset of your data in LangSmith. You can tag examples with different split names , edit and add to...

🍐 Pairwise Evaluations in LangSmith

For LLM use cases like text generation or chat (where there may not be a single "correct" answer), picking a preferred response with pairwise evaluation can...

🛠️ Personal prompts are now separate from LangChain Hub

Your organization's prompts are now separate from the LangChain Hub. This lets you organize and pull existing prompts by their commit versions — so you can...

🌍 LangSmith is now GDPR compliant

LangSmith — our unified developer platform for building, testing, and monitoring LLM applications — is now GDPR compliant. Security and compliance are...

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