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Google's AI brain drain worsens — Anthropic now poaching top Gemini talent directly

June 29, 2026 · 5 min

Zara Reyes & Megan Skiendel

Four senior Google DeepMind researchers — including 2024 Nobel laureate John Jumper — left for Anthropic and OpenAI within six days in late June 2026, amid a DeepMind coding pivot that cut frontier research mandates. SignalFire data shows AI talent flows to Anthropic eleven times more often than the reverse.

In late June 2026, Google faced a concentrated wave of senior AI researcher departures, with four high-profile exits occurring within roughly six days. Jonas Adler and Alexander Pritzel, both described internally as key contributors to Google's Gemini AI model, announced plans to join Anthropic.

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About this episode

In six days at the end of June 2026, four senior Google DeepMind researchers left for rivals. John Jumper — Nobel laureate in Chemistry, the scientist behind AlphaFold — went to Anthropic within a year of winning the prize. So did Jonas Adler and Alexander Pritzel, both core to Gemini. Noam Shazeer, co-author of the original Transformer paper, chose OpenAI. The episode digs into what's actually driving the pattern, and it's more specific than the obvious narrative. Yes, Anthropic's near-trillion-dollar valuation and a possible IPO this fall make the equity math attractive. But the episode argues the real mechanism is a push, not just a pull: DeepMind's pivot toward coding AI redirected compute and narrowed research mandates, and senior researchers doing frontier work watched their scope shrink. That calculus — not just upside elsewhere, but diminishing runway at home — is what the SignalFire data captures when it says researchers are eleven times more likely to flow toward Anthropic than back. There's also a structural irony the episode doesn't let go of: Google is a partial investor in Anthropic, meaning Alphabet is partly subsidizing the pre-IPO equity that's drawing its own people out. And Anthropic is doing this while actively renegotiating a key cloud contract with Amazon. A company with uncertain footing is still winning the talent math against one of the most valuable on earth. That tension is what makes this story worth five minutes.

Frequently asked

Why did John Jumper leave Google DeepMind for Anthropic?

John Jumper, the 2024 Nobel Prize in Chemistry winner who led AlphaFold at Google DeepMind, joined Anthropic within a year of winning the prize. Anthropic's $965 billion valuation and pre-IPO equity upside made the move financially compelling, while DeepMind's pivot toward coding AI narrowed frontier research mandates for senior scientists.

How many Google DeepMind researchers left for rivals in June 2026?

At least ten Google DeepMind researchers departed in a concentrated window in late June 2026. Four left within six days — John Jumper, Jonas Adler, Alexander Pritzel to Anthropic, and Noam Shazeer to OpenAI. DeepMind's coding pivot separately drove six additional researchers to Meta, OpenAI, and Anthropic.

Is Google investing in Anthropic while losing talent to it?

Yes. Google is a partial investor in Anthropic, meaning Alphabet's own capital is helping fund the pre-IPO equity packages that are attracting Google DeepMind's senior researchers. Demis Hassabis told an audience at Cannes in June 2026 that Google wins its 'fair share' of talent during the same week four researchers departed.

Why are AI researchers leaving Google for Anthropic over equity?

Anthropic's $965 billion valuation and a potential IPO as early as fall 2026 make its pre-IPO equity far more attractive than Alphabet RSUs already priced into a $2 trillion market cap. SignalFire data shows AI talent flows toward Anthropic eleven times more often than back to Google, a pattern analysts describe as a personal finance calculation, not just brand preference.

What role did Google DeepMind's coding AI pivot play in researcher departures?

Google DeepMind's strategic pivot toward coding AI redirected compute and resources away from broader frontier research ahead of the June 2026 departures. Researchers like Jonas Adler and Alexander Pritzel, who worked on Gemini coding and training systems, left shortly after the shift, and six additional researchers separately departed for Meta, OpenAI, and Anthropic citing narrowed mandates.

Grounded in 12 sources
Google Poised to Lose Two More Senior AI Staffers to Anthropic · bloomberg.com
Alphabet stock pops 4% on Dow debut, but the tech giant faces major AI questions - CNBC · cnbc.com
Anthropic Poaches John Jumper, Jonas Adler, Alexander Pritzel, and Arthur Conmy from Google DeepMind/Gemini · finance.yahoo.com
GOOGL Stock: Google Loses More AI Talent As Two Experts Reportedly ... · finance.yahoo.com
Google hit by new AI brain drain as Anthropic poaches top Gemini talent - Los Angeles Times · latimes.com
Anthropic partners with California to expand AI use by government workers - Los Angeles Times · latimes.com
Google poised to lose two more high-profile AI staffers to Anthropic · latimes.com
Meta Reportedly Got Too Addicted to Google AI Tokens and Had to Be Cut Off - Gizmodo · gizmodo.com
Anthropic Fires Back at Snitch Amazon CEO - Gizmodo · gizmodo.com
Why Google Just Lost 4 Key Staffers to Anthropic and OpenAI · inc.com
Google set to lose two AI researchers to Anthropic and OpenAI amid growing talent exodus · cryptobriefing.com
Google DeepMind Talent Exodus Hits Alphabet With $270B Loss · memeburn.com
Read transcript

Megan Skiendel: Zara, long week — tell me you have something good for me.

Zara Reyes: I have something unhinged for you. Six days. I need you to hold that number.

Megan Skiendel: Six days what?

Zara Reyes: Six days in late June 2026. Four senior researchers leave Google DeepMind. We're talking John Jumper — Nobel Prize in Chemistry, 2024, led AlphaFold — gone to Anthropic. Jonas Adler, Gemini coding, Anthropic. Alexander Pritzel, Gemini training systems, Anthropic. And Noam Shazeer, like, co-author of the actual Transformer paper, he bounces to OpenAI. All of this while Demis Hassabis is standing at an event in Cannes telling people Google wins its 'fair share' of talent.

Megan Skiendel: Wait — a Nobel laureate left within a year of winning?

Zara Reyes: Within a year. And that's the thing — this isn't attrition, it's not a slow drain. Four people from the same flagship project, Gemini, in six days? That's a cultural moment crystallizing in public. Researchers watched each other leave and went — yeah, that's what winning looks like now. That's brand momentum, and it's moving away from Google.

Megan Skiendel: Okay, but — I want to pump the brakes on the brand death framing for a second. Because I think there's something more specific doing the work here. It's not vibes. It's math.

Zara Reyes: What's the math?

Megan Skiendel: Anthropic just raised at a $965 billion valuation. They're considering an IPO as soon as fall 2026. So — honestly, think about it like buying a house before the subway stop gets announced. That's the whole thing. You get in now, the neighborhood reprices, you didn't work for Alphabet for thirty years accumulating RSUs that are already baked into a two-trillion-dollar market cap.

Zara Reyes: Right — Alphabet stock literally rose four percent the same week these people left. On its Dow Jones debut. Stability is the problem.

Megan Skiendel: Exactly. That's the paradox. And the SignalFire data — eleven times more likely to flow toward Anthropic than back — that's not brand sentiment, that's people running a personal finance calculation and arriving at the same answer.

Zara Reyes: No but — wait, who's writing the checks to Anthropic?

Megan Skiendel: Google is. Google is a partial investor in Anthropic. They are literally — I mean, this is the part that should be a scandal — they are funding the entity using pre-IPO equity to pull their own researchers out the door. Demis Hassabis is in Cannes saying they win their fair share while Alphabet's own capital is subsidizing the competition.

Zara Reyes: No but that's actually where I want to push, because — okay, the equity story is real, but I think it's downstream of something more specific. DeepMind pivoted hard into coding AI. Like, that's a resource allocation decision. Compute flows toward the coding work, and the researchers who came there to push the actual frontier — Adler, Pritzel, Jumper — they're watching their mandates narrow.

Megan Skiendel: The coding pivot drove six more departures. Not just those four — six additional researchers went to Meta, OpenAI, Anthropic combined.

Zara Reyes: Right. And that's — wait, that's the Tuesday morning mechanism. A senior researcher opens their calendar, sees their compute allocation got cut again, checks Slack, sees Pritzel just posted from Anthropic. That's not a slow drift. That decision crystallizes fast.

Megan Skiendel: And Shazeer going to OpenAI proves it's not just Anthropic's pull.

Zara Reyes: Exactly — same IPO upside story, totally different choice. If this were purely pre-IPO math, everyone ends up at the same place. They're scattering. Meta, OpenAI, Anthropic. That scatter pattern tells you the push is real.

Megan Skiendel: Honestly, that's where the SignalFire eleven-to-one number stops being just a headline. It's a compute dispute quantified.

Megan Skiendel: And honestly — the part that I keep tripping over is that Anthropic's own footing isn't that solid. They're in the middle of renegotiating their Amazon deal right now, like, actively, over token-based pricing. That's not a company with nothing but upside. And researchers are still choosing it over a two-trillion-dollar balance sheet.

Zara Reyes: No but that's — wait, that's actually the sharpest version of this whole story. It's not that Anthropic is a sure thing. It's that Google built conditions where even an uncertain bet somewhere else lands better than a certain one at home. Dario Amodei is running contract disputes with Amazon and still winning the talent math.

Megan Skiendel: Which means Google's problem isn't equity. It's that it wrote the playbook — transformer architecture, AlphaFold, the whole thing — and now everyone else is running it back at them. Funded, partly, by Google.

Zara Reyes: Lowkey the most expensive irony in tech right now. Good talk.

Google's AI brain drain worsens — Anthropic now poaching top Gemini talent directly · Onpode