The Aporia · AI researcher Andrew Tulloch is leaving Meta

AI researcher Andrew Tulloch is leaving Meta

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Albergotti, R. (2026, September 15). AI researcher Andrew Tulloch is leaving Meta. Semafor. https://www.semafor.com/article/09/09/2026/ai-researcher-andrew-tulloch-is-leaving-meta

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Quick Summary

Andrew Tulloch, an AI researcher at Meta and previously known for being one of the highest-paid employees in tech with a reported six-year $1.5 billion package (though disputed), is leaving the company. Tulloch's departure comes after delaying it to help launch Meta’s new open-source AI model Muse; he worked in Meta’s TBD lab, part of CEO Mark Zuckerberg’s ambitious AI strategy. The article does not specify reasons for his exit but speculates on potential future career moves given the high demand for top AI talent across tech giants and startups alike.

Written by AI on 2026-09-15, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

Meta AI researcher Andrew Tulloch is leaving the company after gaining attention for reportedly being one of the highest paid employees in tech with a $1.5 billion pay package over six years, though this number has been disputed. Tulloch joined Meta from Thinking Machine Labs and was part of the TBD lab focused on CEO Mark Zuckerberg's ambitious AI strategy. He had delayed his departure until after the successful launch of Meta’s new open-source AI models and assistant, Muse, which was announced Tuesday. It is unclear where Tulloch will go next or why he decided to leave.

Written for “AI Researcher Leaving Meta” on 2026-11-01, grounded in this article and the 0 other(s) covering the same event.

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This article reads unscored and hedges 50% of its claims. Each row says how that neighbour differs.

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How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted

sentences that state something as happening or true

Uncertain

50%

5 of 10 hedged ("reportedly", "may", "according to")

Leaning

not political

takes no side on a contested political question

Publisher signals

60/100

Semafor's corrections and hedging, across everything collected from it. Not a measure of accuracy.

Outlets on this story

Technology

Same framing elsewhere

articles that frame the event the way this one does

Analyzed 2026-09-15 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability

Source leaning vs. consistency

Publisher

Semafor · 1393 article(s) · 1 correction(s) detected

Running correction rate · 1 correction(s)

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Reed Albergotti

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Topics

Google Meta OpenAI Scoop Thinking Machine Labs

Subjects

Tulloch PERSON · 6× Meta ORG · 3× Google ORG · 2× OpenAI ORG · 2× Alexandr Wang PERSON · 1× Andrew Tulloch PERSON · 1× Mark Zuckerberg PERSON · 1× Scale AI ORG · 1× Scoop ORG · 1× Thinking Machine Labs ORG · 1×

Narrative

Tulloch, who came over from Thinking Machine Labs, has been delaying his departure until the company successfully launched its new family of open source AI models and AI assistant, Muse, which was announced Tuesday.

framing: mixed · carried by 1 article(s) · first seen 2026-09-15

🔮 He could not immediately be reached for comment.

2026-09-15 · Semafor

AI researcher Andrew Tulloch is leaving Meta · mixed framing

Claims (10 extracted, 5 hedged)

The Scoop Meta AI researcher Andrew Tulloch, who gained attention for being one of the highest paid employees in the tech industry, is leaving the company, according to a person briefed on the matter. uncertain

who → gain → matter

which → come → models

Tulloch had worked in Meta’s TBD lab, the center of CEO Mark Zuckerberg’s ambitious AI strategy and spearheaded by Scale AI founder Alexandr Wang. asserted

Tulloch → work → Wang

It is unclear exactly why Tulloch left, or whether he plans to continue his AI research at another firm. uncertain

he → leave → firm

He could not immediately be reached for comment. uncertain

He → reach → comment

Know More Tulloch was reportedly recruited personally by Mark Zuckberg, who offered him a $1.5 billion pay package over six years. uncertain

who → know → years

That number has been disputed, but even if it was close, it would have made Tulloch the highest paid employee in the history of the tech industry. asserted

Tulloch → dispute → industry

With the AI race in full gear, the rarefied skills possessed by the top thinkers in the field are in extremely high demand. asserted

skills → possess → demand

Talented researchers dart between leading labs like Anthropic, OpenAI, Google, SpaceXAI and Meta. Tulloch could command a high salary at another lab, or raise billions from venture capitalists for a startup of his own, like OpenAI’s Ilya Sutskever or Google’s Jeff Dean did. uncertain

Sutskever → dart → own

The question is how long the high-priced revolving door at AI companies will last until the talent field adjusts and creates more supply. asserted

field → price → supply