Verified claim · AI-ML · 100% confidence
LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 21cb9a91d350ce7b
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Structured fields
- Subject
- LangGraph
- Predicate
publicly_released_on- Object
- 2024-01-17 by LangChain — agent-graph framework
- Confidence
- 100%
- Tags
- langgraph · langchain · agent-framework · open-source · released_on · 2024
Sources (2)
[1] official blog · LangChain · 2024-01-17
LangGraph — agent runtime for LangChain“LangGraph is a library for building stateful, multi-actor applications with LLMs, built on top of (and intended to be used with) LangChain. It extends the LangChain Expression Language with the ability to coordinate multiple chains across multiple steps of computation in a cyclic manner.”
[2] github release · LangChain · 2024-01-17
LangGraph — official GitHub repository
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LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework. — SourceScore Claim 21cb9a91d350ce7b (verified 2026-05-16). https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.jsonEmbed this claim
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How has SourceScore reviewed the claim "LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework."?
SourceScore records this assertion with 100% legacy editorial confidence as of 2026-05-16, under methodology veritas-v0.1. That metadata is not a truth guarantee. Inspect the 2 cited source record(s), excerpts, and live evidence below.
What is the evidence for "LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework."?
The record lists 2 cited source(s): LangChain, LangChain. Each is shown below with a short excerpt and URL. The JSON record at https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.json includes SourceScore-issued HMAC integrity metadata, not a public verification proof.
When was this claim record last reviewed by SourceScore?
Last reviewed 2026-05-16 under methodology version veritas-v0.1. The dated JSON record includes SourceScore-issued HMAC metadata, which is not publicly recomputable. Refetch the record and inspect current evidence before relying on it.
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cURL
curl https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_langgraph_fact() -> dict:
"""Fetch the verified SourceScore claim for LangGraph."""
r = httpx.get("https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.json")
return r.json()