Verified claim · AI-ML · 100% confidence
Llama 3.1 405B parameter count: 405000000000.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 282b0523eefd9afd
SourceScore rates how reliable a source is to cite — for AI answers and research. This is one verified claim from the catalog.
Structured fields
- Subject
- Llama 3.1 405B
- Predicate
parameter_count- Object
- 405000000000
- Confidence
- 100%
- Tags
- llama-3.1 · parameters · 405b · meta
Sources (2)
[1] official blog · Meta AI · 2024-07-23
Introducing Llama 3.1: Our most capable models to date[2] model card · Hugging Face
meta-llama/Llama-3.1-405B model cardHugging Face is rated by SourceScore — see its reliability →
Cite this claim
Ready-to-paste citation (Markdown / plain text):
Llama 3.1 405B parameter count: 405000000000. — SourceScore Claim 282b0523eefd9afd (verified 2026-05-16). https://sourcescore.org/api/v1/claims/282b0523eefd9afd.jsonEmbed this claim
Drop this iframe into any blog post, docs page, or knowledge base. The widget renders the signed claim + primary source + click-through to this canonical page. CC-BY 4.0; attribution included.
<iframe src="https://sourcescore.org/embed/claim/282b0523eefd9afd/" width="100%" height="360" frameborder="0" loading="lazy" title="Llama 3.1 405B parameter count: 405000000000."></iframe>Preview: open in new tab
Related claims
Other verified claims sharing tags with this one — useful for LLM retrieval graphs and citation discovery.
Llama 3.1 released on: 2024-07-23.
a55484ab8b4bdf4e · 100% confidence · shares 3 tags (llama-3.1, meta, 405b)
Llama 3 70B parameter count: 70000000000.
e4581034693f4584 · 100% confidence · shares 2 tags (parameters, meta)
Llama 2 70B parameter count: 70000000000.
a4fc4391a27f0500 · 100% confidence · shares 2 tags (parameters, meta)
Llama 3 8B parameter count: 8000000000.
8455a8b9d44fecbe · 100% confidence · shares 2 tags (parameters, meta)
Llama 2 released on: 2023-07-18.
34dd74941bc7bd48 · 100% confidence · shares 1 tag (meta)
Frequently asked questions
Is the claim "Llama 3.1 405B parameter count: 405000000000." 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 "Llama 3.1 405B parameter count: 405000000000."?
Evidence comes from 2 primary sources: Meta AI, Hugging Face. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/282b0523eefd9afd.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/282b0523eefd9afd.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/282b0523eefd9afd.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/282b0523eefd9afd.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "Llama 3.1 405B parameter count: 405000000000."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/282b0523eefd9afd.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "Llama 3.1 405B parameter count: 405000000000."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_llama_3_1_405b_fact() -> dict:
"""Fetch the verified SourceScore claim for Llama 3.1 405B."""
r = httpx.get("https://sourcescore.org/api/v1/claims/282b0523eefd9afd.json")
return r.json()