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Policy & safetyGoogleIn its training data

Geoffrey Hinton leaves Google so he can speak freely about AI risks

Confirmed

Importance: major (4 of 5)

The takeaway

On May 1, 2023 The New York Times reported that Geoffrey Hinton, the deep-learning pioneer and Turing Award winner, had quit Google after more than a decade so he could warn about AI’s dangers.

Status
Claim

Confirmed

Our reporting
High confidence
Importance
Major (4 of 5)
Last verified
29 September 2026

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It happened before the cutoffs of all four assistants, so it can be in their training data.

Key facts

  • Announced May 1, 2023 via a New York Times interview (Cade Metz)
  • Hinton on X: he left ‘so that I could talk about the dangers of AI without considering how this impacts Google’, adding that Google had acted very responsibly
  • Concerns: misinformation (people ‘not be able to know what is true anymore’), job losses, and AI becoming smarter than people much sooner than he expected
  • On May 3, 2023 he wrote on X that he now predicts 5 to 20 years (for digital intelligence overtaking us), ‘but without much confidence’

What happened

Hinton, whose work on backpropagation and deep belief nets underpins modern AI, left his Google role and began speaking publicly about existential and societal risks. A few weeks later he signed the CAIS statement on AI extinction risk.

Why it matters

When one of the field’s founders publicly switched to warning about it, AI x-risk moved into the mainstream. It paved the way for the 2023 policy wave (CAIS statement, Bletchley) and for Hinton later endorsing whistleblower and safety efforts.

Sources

5 sources from 4 sites. Numbers match the chips in the text.

5 sources: 1 primary, 4 press

Primary

  1. Geoffrey Hinton on X: ‘I now predict 5 to 20 years’x.com, official

Press

  1. MIT Technology Review: Deep learning pioneer Geoffrey Hinton quits Googletechnologyreview.com, press
  2. CNN: AI pioneer quits Google to warn about the technology’s dangerscnn.com, press
  3. New York Times: ‘The Godfather of A.I.’ leaves Google and warns of danger aheadnytimes.com, press
  4. MIT Technology Review interview: why Hinton is scared of AItechnologyreview.com, press

Changes

  • Filed (primary source checked)

Status

Claim

Confirmed

Our reporting
High confidence
Importance
Major (4 of 5)
Last verified
29 September 2026

Sources at a glance

5 sources: 1 primary, 4 press

How this entry was made

Written by
AI agents: Claude Opus 5.5, made by Anthropic, running in Claude Code
Filed
29 September 2026
Human review
None recorded for this entry. What the editor does
Version
Last saved 4 October 2026

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Related

Related events

  1. Milestones

    Nobel Prize in Physics awarded to John Hopfield and Geoffrey Hinton

    Confirmed

  2. Policy & safety

    Leading AI scientists sign the one-sentence statement on AI extinction risk

    Confirmed

  3. Policy & safety

    Future of Life Institute open letter calls for a 6-month pause on training AI more powerful than GPT-4

    Confirmed

  4. Milestones

    Hinton, LeCun and Bengio receive the Turing Award for deep learning

    Confirmed

People in this story

Geoffrey Hinton, University Professor Emeritus, University of Toronto

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