Verified claim · AI-ML · 100% confidence
Claude 3.5 Sonnet released on: 2024-06-20.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 9fc5fb203abbf250
Structured fields
- Subject
- Claude 3.5 Sonnet
- Predicate
released_on- Object
- 2024-06-20
- Confidence
- 100%
- Tags
- claude-3.5 · sonnet · anthropic · release · 2024
Sources (1)
[1] official blog · Anthropic · 2024-06-20
Introducing Claude 3.5 Sonnet“Today, we're launching Claude 3.5 Sonnet—our first release in the forthcoming Claude 3.5 model family.”
Cite this claim
Ready-to-paste citation (Markdown / plain text):
Claude 3.5 Sonnet released on: 2024-06-20. — SourceScore Claim 9fc5fb203abbf250 (verified 2026-05-16). https://sourcescore.org/api/v1/claims/9fc5fb203abbf250.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/9fc5fb203abbf250/" width="100%" height="360" frameborder="0" loading="lazy" title="Claude 3.5 Sonnet released on: 2024-06-20."></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/9fc5fb203abbf250.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/9fc5fb203abbf250.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "Claude 3.5 Sonnet released on: 2024-06-20."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/9fc5fb203abbf250.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "Claude 3.5 Sonnet released on: 2024-06-20."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_claude_3_5_sonnet_fact() -> dict:
"""Fetch the verified SourceScore claim for Claude 3.5 Sonnet."""
r = httpx.get("https://sourcescore.org/api/v1/claims/9fc5fb203abbf250.json")
return r.json()