Verified claim · AI-ML · 100% confidence
Claude 3.7 Sonnet publicly released on: 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 57c9272a3e7cb435
Structured fields
- Subject
- Claude 3.7 Sonnet
- Predicate
publicly_released_on- Object
- 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode
- Confidence
- 100%
- Tags
- claude-3-7-sonnet · anthropic · hybrid-reasoning · frontier-model · released_on · 2025
Sources (2)
[1] official blog · Anthropic · 2025-02-24
Claude 3.7 Sonnet and Claude Code“Claude 3.7 Sonnet is our most intelligent model to date and the first hybrid reasoning model on the market.”
[2] docs · Anthropic · 2025-02-24
Anthropic Models — claude-3-7-sonnet-20250219 listing
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Claude 3.7 Sonnet publicly released on: 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode. — SourceScore Claim 57c9272a3e7cb435 (verified 2026-05-16). https://sourcescore.org/api/v1/claims/57c9272a3e7cb435.jsonEmbed this claim
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Frequently asked questions
Is the claim "Claude 3.7 Sonnet publicly released on: 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode." 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 "Claude 3.7 Sonnet publicly released on: 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode."?
Evidence comes from 2 primary sources: Anthropic, Anthropic. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/57c9272a3e7cb435.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/57c9272a3e7cb435.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/57c9272a3e7cb435.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/57c9272a3e7cb435.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "Claude 3.7 Sonnet publicly released on: 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/57c9272a3e7cb435.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "Claude 3.7 Sonnet publicly released on: 2025-02-24 by Anthropic — first hybrid-reasoning model with optional extended-thinking mode."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_claude_3_7_sonnet_fact() -> dict:
"""Fetch the verified SourceScore claim for Claude 3.7 Sonnet."""
r = httpx.get("https://sourcescore.org/api/v1/claims/57c9272a3e7cb435.json")
return r.json()