Verified claim · AI-ML · 90% confidence
xAI Grok 4 publicly released on: 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant.
Last verified 2026-05-16 · Methodology veritas-v0.1 · cc5cf53dd3b1f03f
Structured fields
- Subject
- xAI Grok 4
- Predicate
publicly_released_on- Object
- 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant
- Confidence
- 90%
- Tags
- grok-4 · xai · frontier-model · multi-agent · released_on · 2025
Sources (2)
[1] official blog · xAI · 2025-07-09
Grok 4“Grok 4 is xAI's most intelligent model to date, with frontier-level reasoning and a Heavy variant that runs multiple agents in parallel.”
[2] docs · xAI · 2025-07-09
xAI Models Documentation — grok-4
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xAI Grok 4 publicly released on: 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant. — SourceScore Claim cc5cf53dd3b1f03f (verified 2026-05-16). https://sourcescore.org/api/v1/claims/cc5cf53dd3b1f03f.jsonEmbed this claim
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Frequently asked questions
Is the claim "xAI Grok 4 publicly released on: 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant." verified?
Yes — SourceScore verified this claim with 90% 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 "xAI Grok 4 publicly released on: 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant."?
Evidence comes from 2 primary sources: xAI, xAI. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/cc5cf53dd3b1f03f.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/cc5cf53dd3b1f03f.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.
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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/cc5cf53dd3b1f03f.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/cc5cf53dd3b1f03f.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "xAI Grok 4 publicly released on: 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/cc5cf53dd3b1f03f.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "xAI Grok 4 publicly released on: 2025-07-09 by xAI — Grok 4 frontier model + Grok 4 Heavy multi-agent variant."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_xai_grok_4_fact() -> dict:
"""Fetch the verified SourceScore claim for xAI Grok 4."""
r = httpx.get("https://sourcescore.org/api/v1/claims/cc5cf53dd3b1f03f.json")
return r.json()