Verified claim · AI-ML · 100% confidence
GPT-4o context window tokens: 128000.
Last verified 2026-05-16 · Methodology veritas-v0.1 · 118226d52c6f7491
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
- GPT-4o
- Predicate
context_window_tokens- Object
- 128000
- Confidence
- 100%
- Tags
- gpt-4o · context · openai · 128k
Sources (2)
[1] docs · OpenAI
OpenAI GPT-4o model documentationOpenAI is rated by SourceScore — see its reliability →[2] official blog · OpenAI · 2024-05-13
Hello GPT-4oOpenAI is rated by SourceScore — see its reliability →
Cite this claim
Ready-to-paste citation (Markdown / plain text):
GPT-4o context window tokens: 128000. — SourceScore Claim 118226d52c6f7491 (verified 2026-05-16). https://sourcescore.org/api/v1/claims/118226d52c6f7491.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/118226d52c6f7491/" width="100%" height="360" frameborder="0" loading="lazy" title="GPT-4o context window tokens: 128000."></iframe>Preview: open in new tab
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Frequently asked questions
Is the claim "GPT-4o context window tokens: 128000." 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 "GPT-4o context window tokens: 128000."?
Evidence comes from 2 primary sources: OpenAI, OpenAI. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/118226d52c6f7491.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/118226d52c6f7491.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/118226d52c6f7491.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/118226d52c6f7491.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "GPT-4o context window tokens: 128000."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/118226d52c6f7491.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "GPT-4o context window tokens: 128000."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_gpt_4o_fact() -> dict:
"""Fetch the verified SourceScore claim for GPT-4o."""
r = httpx.get("https://sourcescore.org/api/v1/claims/118226d52c6f7491.json")
return r.json()