Andrew Tulloch Joined Anthropic Inference Team
The veteran AI researcher has moved to the San Francisco-based company after concluding his tenure at Meta.
Updated on Sept. 28, 2026 in Artificial Intelligence
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Andrew Tulloch has joined the inference and performance team at Anthropic to focus on training Claude technology. This move follows his recent departure from Meta.
Why it matters
The transition brings a veteran researcher to one of San Francisco's key AI labs. Anthropic remains in a competitive race to scale large language models, making the hiring of experienced engineering leadership a significant move for the city's tech ecosystem.
Tulloch joins Anthropic following an 11-month stint at Meta, which followed an 11-year career in the company's research department. His professional path also includes a 12-month tenure at OpenAI.
The players
Andrew Tulloch
An AI researcher and former Meta executive who has joined the team at Anthropic.
Anthropic
A San Francisco-based AI research company known for developing the Claude model.
Meta
The parent company of Facebook and a major player in AI research and agent development.
OpenAI
A research laboratory and development company where Tulloch previously held a position.
The details
Tulloch officially transitioned to the Anthropic inference and performance team in September 2026. His mandate is to work on training Claude technology. Before this role, Tulloch spent nearly a year at Meta following over a decade of research work at the firm, and he also served a one-year stint at OpenAI between 2023 and 2024.
Timeline
2007: Andrew Tulloch graduated from Christ Church Grammar School.
2023-2024: Tulloch worked at OpenAI for 12 months.
August 2025: Reports surfaced regarding a Meta offer.
September 2026: Andrew Tulloch joined Anthropic.
Across the Bay
This move mirrors the broader talent circulation observed in the 2025 hiring trends within San Francisco's generative AI sector. It highlights the continued migration of veteran researchers between the city's top-tier AI labs.
This move strengthens the engineering presence at Anthropic's San Francisco headquarters. Residents watching the local AI job market should note this shift as a indicator of ongoing high-level recruitment activity in the downtown core.
The takeaway
The movement of high-profile engineers continues to define the pace of AI development in San Francisco. Keep an eye on Anthropic's technical updates as they integrate new leadership into their inference and performance teams.
Further reading
For more on the changing landscape of local research labs, see our Artificial Intelligence section.
Source note: This article includes information reported by News.
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