We're taking Interrupt on the road this fall with two new stops in NYC and London.
🗽 NYC: September 24
🇬🇧 London: October 13
Get your tickets now! interrupt.langchain.com
ICYMI -- yesterday we released support for the new MCP protocol in @LangChain !! what do you need to know?
1. MCP support is now in the main langchain package! get started with `uv pip install 'langchain[mcp]'`
2. it's now built on top of FastMCP v4; FastMCP has ergonomic
We’re looking for someone to lead SmithDB at LangChain!
SmithDB is the database we’ve built from the ground up to power LangSmith. It’s optimized specifically for the access patterns that emerge when you’re storing and querying enormous volumes of agent traces.
It’s serving
New from the LangSmith Signal.
Over the last 2 weeks, we looked at which models teams reach for, and which ones are doing the work.
✅ Reach: gpt-4o-mini was used by 13% of orgs
✅ Work: gpt-4.1-mini sat at 7% of LLM calls
💡 DeepSeek V4 Flash: The only open-weight model to
