Claim · 2025-08-11 · event · Stated in source · Supported

Sara Hooker announced in a LinkedIn post of 11 August 2025 that she was leaving Cohere after three years leading Cohere Labs, with her last day on 15 September 2025; TechCrunch reported on 14 August 2025 that Cohere’s VP of AI Research had announced her departure that week.

One recorded claim. The claim panel gives its qualification, the source passages with their place in each source, and how it was checked.

What it connects

Sara Hooker → had departure announced from → Cohere

Where it appears

No collection page holds this claim. It is listed with its records in the explorer.

Claim and evidence

Sara Hookerhad departure announced from ↓Cohere

Machine-checkedStated in sourceSupported

Supporting evidence: primary + secondary · 2 sources

Date: 2025-08-11 · event Records dated 2025 →
Activity stage: announced
Role: VP of AI Research

Scope and limitsAn announced departure: her post gives a scheduled last day, and the record does not establish that she left on it. The title VP of AI Research rests on TechCrunch; her post says she led Cohere Labs.

The evidence 03

primary sourceSupports the claim

LinkedIn post: “Three years, 100+ papers, 150+ collaborations …”

LinkedIn · 2025-08-11

Cite the original source

Cite the original document, not Selekoa. Check these details against it.

Source excerpt

“My last day will be September 15th”

Location in source Post body, paragraph beginning “I’m profoundly grateful”

How it was read Retrieved directly from the publisher

Machine-checked · 2026-11-01

Source details and check notes

Authors: Sara Hooker
Version: Retrieved at admission on 2026-11-01 (SHA-256 296cc6a715c0314f7494795635e862563feb1d80690e5369ab7baa60241dcb8c) directly from the publisher. Its wording can change; earlier wording is not authenticated.
Canonical address: Open the canonical source ↗
Accessed: 2026-11-01
Language: English (en)
Attribution: Sara Hooker, “LinkedIn post: “Three years, 100+ papers, 150+ collaborations …””, 2025-08-11.
Reuse: No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution.
Check notes: Added at the admission of the lab genealogy 2 pack (research/lab-genealogy-2) from a text the cross-family check of 2026-10-31 located. The quotation (7 words) matched a fresh retrieval of 2026-11-01 (SHA-256 296cc6a715c0314f7494795635e862563feb1d80690e5369ab7baa60241dcb8c). Matching ignored differences of whitespace, case, quotation marks, apostrophes, dashes and Unicode compatibility forms, so the source’s typography can differ. No human editorial review.

primary sourceSupports the claim

LinkedIn post: “Three years, 100+ papers, 150+ collaborations …”

LinkedIn · 2025-08-11

Cite the original source

Cite the original document, not Selekoa. Check these details against it.

Source excerpt

“I made a tough decision 2 months ago it is time to say goodbye”

Location in source Post body, second paragraph

How it was read Retrieved directly from the publisher

Machine-checked · 2026-11-01

Source details and check notes

Authors: Sara Hooker
Version: Retrieved at admission on 2026-11-01 (SHA-256 296cc6a715c0314f7494795635e862563feb1d80690e5369ab7baa60241dcb8c) directly from the publisher. Its wording can change; earlier wording is not authenticated.
Canonical address: Open the canonical source ↗
Accessed: 2026-11-01
Language: English (en)
Attribution: Sara Hooker, “LinkedIn post: “Three years, 100+ papers, 150+ collaborations …””, 2025-08-11.
Reuse: No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution.
Check notes: Added at the admission of the lab genealogy 2 pack (research/lab-genealogy-2) from a text the cross-family check of 2026-10-31 located. The quotation (14 words) matched a fresh retrieval of 2026-11-01 (SHA-256 296cc6a715c0314f7494795635e862563feb1d80690e5369ab7baa60241dcb8c). Matching ignored differences of whitespace, case, quotation marks, apostrophes, dashes and Unicode compatibility forms, so the source’s typography can differ. No human editorial review.

secondary sourceSupports the claim

Cohere hires long-time Meta research head Joelle Pineau as its chief AI officer

TechCrunch · 2025-08-14

Cite the original source

Cite the original document, not Selekoa. Check these details against it.

Paraphrase

TechCrunch reports that Cohere’s VP of AI Research, Sara Hooker, announced her departure that week.

Location in source Paragraph beginning “One immediate challenge for Pineau”

How it was read Retrieved directly from the publisher

Machine-checked · 2026-10-29

Source details and check notes

Authors: TechCrunch
Version: Dated page, retrieved on 2026-10-29 (SHA-256 0783807e09d882451f61cbbb159d4a06bc9cf2ed92aaeaf01253c220e38be32a) directly from the publisher. Reporting; mentions Sara Hooker’s departure announcement in passing. Her own post was not located.
Canonical address: Open the canonical source ↗
Accessed: 2026-10-29
Language: English (en)
Attribution: TechCrunch, “Cohere hires long-time Meta research head Joelle Pineau as its chief AI officer”, 2025-08-14.
Reuse: No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution.
Check notes: Candidate pack passage, lab genealogy 2 (research/lab-genealogy-2). The paraphrase’s verbatim anchor “Cohere's VP of AI Research, Sara Hooker, who announced her departure this week” matched the retrieved text on 2026-10-29 and again in a fresh retrieval. Read directly from the publisher. Matching ignored differences of whitespace, case, quotation marks, apostrophes, dashes and Unicode compatibility forms, so the source’s typography can differ. The paraphrase is Selekoa’s; only the anchor is the source’s wording. A cross-family machine check (2026-10-31, item L088) re-read the record’s sources. No human editorial review.

Status and meaning

Editorial status. Machine-checked. Machines found this record and checked it against its sources; no person accepted it individually. Each evidence record above shows how it was checked.

Relation. A source announced this person’s departure from a specified role. The event date is the announcement, not an inferred final working day or end of every association.

Date. Date of her post. The last day it gives, 15 September 2025, was scheduled at the time; its completion is not documented here.

Record ID lg2-eu-hooker-cohere-departure-2025