LangGraph 1.2.19 released
A patch release fixing trace policy handling, event namespaces, and tool node streaming behavior.
What changed in 1.2.19
- Trace policy no longer rewrites streamed node payloads, and node-output messages from streamed subgraphs are now emitted correctly.
- Messages and tools events now receive the namespace of their parent graph.
- Tool nodes display tool names in graph metadata, and paused tools are no longer incorrectly reported as failed.
- RemoteGraph.stream respects subgraphs=False setting when called under a streaming parent.
Summarised by AgentGid from LangChain's official release notes on GitHub, as reported there; read the original before relying on it. Price, status and release dates come from our daily data.
LangGraph at a glance
| What it is | A low-level orchestration framework for building stateful agents as graphs, with durable execution, persistence and human-in-the-loop steps. Available for Python and JavaScript. |
|---|---|
| Latest version | 1.2.22, Nov 14, 2026. This page is about an earlier release. |
| Release pace | 7 stable releases in the last 30 days; 1.2.19 came 4 days after the previous one |
| Price | Free (OSS). LangGraph is open source and free to use; you pay only for the models and infrastructure it runs on. (checked Nov 5, 2026) |
| Downloads, last 7 days | 19M up 1.7% |
| Gid Score | 74 #2 in Agent frameworks and SDKs |
