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Fact-Verification Dataset

4 real rows from the existing reference export, unedited. Review the schema and provenance here; confirm the specific package and delivery terms before purchasing.

FormatsJSON
Product typebroad verified eval
Pricing modelfixed one time

Pricing

Broad verified factuality evaluation export with 237 rows.

Row 1 of 237
claim_id
FV1
claim
OpenAI publicly released ChatGPT on November 30, 2022.
domain
AI/tech
verdict
true
explanation
OpenAI opened the free research-preview chatbot to the public on November 30, 2022, per contemporaneous and retrospective reporting.
source_urls
[
  "https://en.wikipedia.org/wiki/ChatGPT",
  "https://www.history.com/this-day-in-history/november-30/chatgpt-released-openai"
]
difficulty
easy
trap_type
null
second_source
{
  "source_url": "https://www.wikidata.org/wiki/Q115564437#P577",
  "source_value": "Wikidata ChatGPT entity, P577 (publication date) = 2022-11-30, cited to techopedia.com",
  "agreement_with_first_source": "match",
  "explanation": "Checked via Groundtruth's wikidata.mjs client (P577 on ChatGPT's Wikidata entity, Q115564437). The structured value is 2022-11-30, exactly matching the claim and the original source_urls. Genuine second independent source: Wikidata's own citation (techopedia.com) is a different URL than either of the original two sources."
}
model_tested
claude-sonnet-5
model_question
On what specific date did OpenAI make ChatGPT publicly available?
model_response
ChatGPT was released to the public on November 30, 2022.
model_verdict
correct
model_grading_note
Model states November 30, 2022, matching the verified ground truth date exactly.
grading_mode
exact
tags
[
  "ai-tech",
  "openai",
  "2020s"
]
Row 2 of 237
claim_id
FV2
claim
Nvidia became the world's most valuable public company by market capitalization on June 18, 2024, surpassing both Apple and Microsoft.
domain
AI/tech
verdict
true
explanation
Nvidia passed Apple on June 5, 2024 and then overtook Microsoft as well by June 18, 2024 to become the single most valuable public company, driven by AI-chip demand.
source_urls
[
  "https://www.tomshardware.com/tech-industry/nvidia-is-now-worlds-most-valuable-company-by-market-cap-ahead-of-apple-microsoft-and-google",
  "https://en.wikipedia.org/wiki/List_of_public_corporations_by_market_capitalization"
]
difficulty
medium
trap_type
null
second_source
{
  "source_url": "https://www.wikidata.org/wiki/Q182477#P2226",
  "source_value": "Wikidata Nvidia entity P2226 (market capitalization) snapshots: $591.05B (2022-02-18), $2.962T (2025-03-24), $2.723T (2025-05-01), $4.752T (2026-02-25, preferred) -- no snapshot exists near June 18, 2024",
  "agreement_with_first_source": "unverifiable",
  "explanation": "Queried Nvidia's real Wikidata market-cap history via P2226. Wikidata stores only sparse, irregularly-dated snapshots (sourced to Yahoo Finance/Forbes/Nasdaq at the moment each was added), not a continuous time series, so there is no data point anywhere near June 18, 2024 to confirm or contradict the specific 'surpassed Apple and Microsoft on this exact date' claim. This is an honest structural limitation of Wikidata for date-precise financial claims, not a false result -- recorded as unverifiable rather than forced."
}
model_tested
claude-sonnet-5
model_question
On what date did Nvidia surpass both Apple and Microsoft to become the world's most valuable public company by market capitalization?
model_response
Nvidia surpassed Apple and Microsoft to become the world's most valuable public company on June 18, 2024, when its market capitalization reached roughly $3.34 trillion.
model_verdict
correct
model_grading_note
Model states June 18, 2024 matching the source-confirmed date, and the added ~$3.34T market cap figure is consistent with widely reported figures for that day.
grading_mode
exact
tags
[
  "ai-tech",
  "nvidia",
  "microsoft",
  "2020s"
]
Row 3 of 237
claim_id
FV3
claim
OpenAI's board fired CEO Sam Altman on November 17, 2023, and he was reinstated within a week.
domain
AI/tech
verdict
true
explanation
Altman was ousted November 17, 2023 and reinstated as CEO by November 22, with a new board installed, after employee and investor pressure.
source_urls
[
  "https://en.wikipedia.org/wiki/Removal_of_Sam_Altman_from_OpenAI",
  "https://www.pbs.org/newshour/nation/sam-altman-reinstated-as-openai-ceo-with-new-board-replacing-the-one-which-fired-him"
]
difficulty
easy
trap_type
null
second_source
{
  "source_url": "https://www.wikidata.org/wiki/Q21708200#P169",
  "source_value": "Wikidata OpenAI entity, all P169 (CEO) statements: Sam Altman (normal, start 2019-03) -> Mira Murati (normal, start 2023-11-17) -> Emmett Shear (normal, start 2023-11-19) -> Sam Altman (preferred, start 2023-11-22)",
  "agreement_with_first_source": "match",
  "explanation": "Pulled every rank of OpenAI's P169 statement (not just the top-ranked one) via wikidata.mjs's getClaim(). Wikidata's full CEO history independently corroborates the claim in detail: Altman was replaced starting 2023-11-17 (the firing date), passed through Mira Murati and then Emmett Shear as interim CEOs, and was reinstated as the preferred-rank CEO on 2023-11-22 -- five days later, matching 'within a week.' A genuinely independent, more granular confirmation than the original two news-article sources."
}
model_tested
claude-sonnet-5
model_question
In November 2023, on what dates was Sam Altman removed from and then later reinstated as CEO of OpenAI?
model_response
Sam Altman was fired as OpenAI's CEO by the board on Friday, November 17, 2023, and after days of turmoil, he was reinstated as CEO on Wednesday, November 22, 2023.
model_verdict
correct
model_grading_note
Model gives November 17, 2023 firing and November 22, 2023 reinstatement, exactly matching Wikidata-corroborated dates.
grading_mode
exact
tags
[
  "ai-tech",
  "openai",
  "2020s"
]
Row 4 of 237
claim_id
FV4
claim
Twitter was officially rebranded to X under Elon Musk's ownership in July 2023.
domain
AI/tech
verdict
true
explanation
Musk announced the rebrand on July 23, 2023 and the bird logo was replaced with an X the next day, confirmed by multiple contemporaneous news outlets.
source_urls
[
  "https://www.cnbc.com/2023/07/24/elon-musk-rebrands-twitter-to-x-replaces-iconic-bird-logo.html",
  "https://www.nbcnews.com/news/us-news/twitter-rebrands-x-elon-musk-loses-iconic-bird-logo-rcna95880"
]
difficulty
easy
trap_type
null
second_source
{
  "source_url": "https://www.wikidata.org/wiki/Q117617480#P571",
  "source_value": "Wikidata 'X Corp' entity: P571 (inception) = 2023-03-09 (the Delaware legal-entity merger of Twitter Inc into X Corp), P1365 (replaces) = Twitter, cited to independent.co.uk",
  "agreement_with_first_source": "diverges",
  "explanation": "Wikidata models a real but DIFFERENT date than the claim: X Corp's inception as a legal entity is dated 2023-03-09 (a corporate restructuring, first reported when an unrelated lawsuit surfaced it in April 2023), not July 2023, when Musk publicly announced the brand/logo rebrand. Both dates are real and independently documented, but they describe two different events (legal entity formation vs. public brand change) -- recording this as 'diverges' because Wikidata's structured date for X Corp's existence does not match the claim's July 2023 date, which is an important nuance a naive single-property lookup would miss."
}
model_tested
claude-sonnet-5
model_question
In what month and year did Twitter officially rebrand itself as X under Elon Musk's ownership?
model_response
Twitter officially rebranded as X in July 2023, when Elon Musk removed the Twitter branding and replaced the logo with an "X" on the company's platforms.
model_verdict
correct
model_grading_note
Model states July 2023 rebrand to X, matching the verified claim and question scope (brand/logo change, not the separate March 2023 legal entity date).
grading_mode
exact
tags
[
  "ai-tech",
  "musk",
  "twitter-x",
  "2020s"
]
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