Verified claim · AI-ML · 100% confidence
LangSmith publicly released on: 2023-07-18 by LangChain — LLM observability + evaluation platform.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 9ef37fbd1460c501
Structured fields
- Subject
- LangSmith
- Predicate
publicly_released_on- Object
- 2023-07-18 by LangChain — LLM observability + evaluation platform
- Confidence
- 100%
- Tags
- langsmith · langchain · observability · evaluation · released_on · 2023
Sources (2)
[1] official blog · LangChain · 2023-07-18
Announcing LangSmith — a unified platform for debugging, testing, evaluating and monitoring LLM applications“Today, we're introducing LangSmith, a platform to help developers close the gap between prototype and production. LangSmith provides developers with the tools to make LLM applications more reliable.”
[2] docs · LangChain · 2023-07-18
LangSmith — official documentation
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LangSmith publicly released on: 2023-07-18 by LangChain — LLM observability + evaluation platform. — SourceScore Claim 9ef37fbd1460c501 (verified 2026-05-16). https://sourcescore.org/api/v1/claims/9ef37fbd1460c501.jsonEmbed this claim
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<iframe src="https://sourcescore.org/embed/claim/9ef37fbd1460c501/" width="100%" height="360" frameborder="0" loading="lazy" title="LangSmith publicly released on: 2023-07-18 by LangChain — LLM observability + evaluation platform."></iframe>Preview: open in new tab
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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/9ef37fbd1460c501.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/9ef37fbd1460c501.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "LangSmith publicly released on: 2023-07-18 by LangChain — LLM observability + evaluation platform."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/9ef37fbd1460c501.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "LangSmith publicly released on: 2023-07-18 by LangChain — LLM observability + evaluation platform."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_langsmith_fact() -> dict:
"""Fetch the verified SourceScore claim for LangSmith."""
r = httpx.get("https://sourcescore.org/api/v1/claims/9ef37fbd1460c501.json")
return r.json()