LangChain Changelog

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February 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

File attachments with example datasets in LangSmith

LangSmith now supports uploading any binary file (e.g. images, audio, videos, PDF) directly with examples in your datasets. You can now run multimodal LLM...

December 12, 2024

LangSmith Self-Hosted

📈 Organization Usage Charts for Self-Hosted Customers

Self-hosted LangSmith customers can now access organization usage charts . Track trace usage across your entire org or by workspace with ease. What’s New:...

December 10, 2024

🔭 OpenTelemetry support for LangSmith

LangSmith now supports OpenTelemetry, bringing distributed tracing and end-to-end visibility to your LLM observability workflow. Ingest traces in OpenLLMetry...

December 9, 2024

🛠️ LangSmith SDK v0.2: Simplified evaluators and improved performance

We've recently released v0.2 of our LangSmith SDKs (Python and TypeScript) with a number of quality-of-life improvements to make the evals experience more...

December 6, 2024

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