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LangGraph

AI-ASSISTANTS
Velocity5.0

Framework from LangChain for building stateful, multi-actor agent applications with LLMs.

www.langchain.com/langgraph ↗

LangGraph's 1.2.x line is in stabilization mode after the v3 streaming push

langgraphcheckpointingstreamingagent runtimeclimaintenance
◆Current state
Recent releases are patch-level: checkpoint and delta-channel correctness fixes, updateState edge cases, and dependency bumps, plus two small CLI features. The heavier capability work — v3 streaming on RemoteGraph, named tool-dispatched subagents — landed in 1.2.3 and is now being hardened rather than extended.
◆Where it's heading
The team is paying down correctness debt around the delta-channel/checkpoint machinery that underpins durable, resumable agent state, and keeping the CLI in step. This is the consolidation phase of a feature cycle: fewer new surfaces, more reliability on the ones just shipped.
◆Prediction
Expect continued 1.2.x patches closing checkpoint/streaming edge cases before the next minor introduces new agent-runtime capability; the CLI will keep gaining deployment ergonomics like the HTTPS and API-version-range options just added.

◆Recent moves

  1. 2d ago

    LangGraph 1.2.8: delta-channel checkpoint fix + dependency bumps

    A patch fixing a delta-channel bug where updateState on a fresh thread forced a full snapshot instead of a stub checkpoint, plus routine dependency bumps. Pure correctness maintenance on the checkpoint layer.

    View source ↗
  2. 9d ago

    LangGraph 1.2.7: DeltaChannel snapshot and Overwrite fixes

    Snapshot DeltaChannel overwrite fixes and a JSON-roundtrip fix for Overwrite, with dependency bumps. Continues hardening the checkpoint serialization path.

    View source ↗
  3. 20d ago

    LangGraph 1.2.6: nested-subgraph checkpoint + stream-abort fixes

    Fixes a nested-subgraph checkpoint_ns regression from 1.2.3 and adds cancellation of running subgraphs on v3 stream abort. Reliability fixes for the recently shipped subgraph/streaming features.

    View source ↗
  4. 23d ago

    LangGraph CLI 0.4.30: compatible API version ranges

    The CLI adds support for compatible API version ranges, easing deployment against multiple server versions. A small but real deployment-ergonomics gain in the stabilization cycle.

    View source ↗
  5. 26d ago

    LangGraph 1.2.5: config metadata merge + updateState fix

    Merges lc_versions config metadata and fixes an updateState bug on empty threads, plus a type-checking migration and dep bumps. Internal correctness work.

    View source ↗
  6. 28d ago

    LangGraph CLI 0.4.29: HTTPS dev server support

    The dev server CLI gains certfile/cert-key options to run under HTTPS, a real new option for local development against secure endpoints.

    View source ↗