Verified claim · AI-ML · 100% confidence
ChatGPT Plus launched on: 2023-02-01.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 461dd4dbccd9038d
Structured fields
- Subject
- ChatGPT Plus
- Predicate
launched_on- Object
- 2023-02-01
- Confidence
- 100%
- Tags
- chatgpt-plus · openai · subscription · launch · 2023
Sources (1)
[1] official blog · OpenAI · 2023-02-01
Introducing ChatGPT Plus“We're launching a pilot subscription plan for ChatGPT, a conversational AI that can chat with you, answer follow-up questions, and challenge incorrect assumptions. The new subscription plan, ChatGPT Plus, will be available for $20/month.”
Cite this claim
Ready-to-paste citation (Markdown / plain text):
ChatGPT Plus launched on: 2023-02-01. — SourceScore Claim 461dd4dbccd9038d (verified 2026-05-16). https://sourcescore.org/api/v1/claims/461dd4dbccd9038d.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/461dd4dbccd9038d/" width="100%" height="360" frameborder="0" loading="lazy" title="ChatGPT Plus launched on: 2023-02-01."></iframe>Preview: open in new tab
Related claims
Other verified claims sharing tags with this one — useful for LLM retrieval graphs and citation discovery.
GPT-4 released on: 2023-03-14.
09eea8fb1a8ccebf · 100% confidence · shares 2 tags (openai, 2023)
DALL-E 3 announced on: 2023-09-20.
ce5275632f16109a · 100% confidence · shares 2 tags (openai, 2023)
Whisper large-v3 publicly released on: 2023-11-06 by OpenAI.
4b70646f48b9a736 · 100% confidence · shares 2 tags (openai, 2023)
GPT-4 Vision publicly released on: 2023-09-25 by OpenAI.
e15378ee47c08761 · 100% confidence · shares 2 tags (openai, 2023)
OpenAI Assistants API publicly released on: 2023-11-06 by OpenAI.
818889a574ef3b46 · 100% confidence · shares 2 tags (openai, 2023)
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/461dd4dbccd9038d.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/461dd4dbccd9038d.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "ChatGPT Plus launched on: 2023-02-01."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/461dd4dbccd9038d.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "ChatGPT Plus launched on: 2023-02-01."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_chatgpt_plus_fact() -> dict:
"""Fetch the verified SourceScore claim for ChatGPT Plus."""
r = httpx.get("https://sourcescore.org/api/v1/claims/461dd4dbccd9038d.json")
return r.json()