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
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
Cite this claim
Ready-to-paste citation (Markdown / plain text):
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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Frequently asked questions
Is the claim "LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework." verified?
Yes — SourceScore verified this claim with 100% confidence as of 2026-05-16. The verification uses 2 primary sources cross-referenced against the SourceScore methodology (version veritas-v0.1). Full source list + signed JSON envelope linked below.
What is the evidence for "LangGraph publicly released on: 2024-01-17 by LangChain — agent-graph framework."?
Evidence comes from 2 primary sources: LangChain, LangChain. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.json includes an HMAC-SHA256 signature for audit verification.
When was this claim last verified by SourceScore?
Last verified 2026-05-16 under methodology version veritas-v0.1. The signed JSON envelope is dated and cryptographically signed for audit trail. Re-verification cadence depends on the claim type and source freshness.
How can I cite this SourceScore claim in my code or article?
Fetch the signed JSON envelope from https://sourcescore.org/api/v1/claims/21cb9a91d350ce7b.json which includes the verbatim claim, primary sources, confidence, methodology version, last-verified date, and HMAC-SHA256 signature for audit. The CC-BY-4.0 license permits commercial use with attribution to SourceScore.
Use this claim in your code
Fetch this signed envelope from your application. The response includes the verbatim excerpt, primary source URLs, and an HMAC-SHA256 signature you can verify locally for audit trails.
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()