85 publicly reported moves of researchers, research engineers, model-infrastructure and safety staff, founders and hands-on research leaders between 13 frontier labs, February 2025 through September 2026 — a best-effort census of what the press reported, not a private employment registry. 58 moves landed in 2025, 27 in 2026; each month is a stated start month or, failing that, the announcement month.
| Month | Researcher | Left | Joined | Basis | Context | Corroboration | Source |
|---|
Move-level data: 85 deduplicated researcher moves between frontier labs, Feb 2025 – Sep 2026, compiled from 2,035 unique live-web search results across 12 query families with semantic extraction on 2,000, then normalized and deduplicated by person and route. “Frontier lab” is used broadly and includes new ventures (Thinking Machines Lab, Safe Superintelligence, AMI Labs, Ineffable Intelligence); subdivisions are rolled into parents (Meta superintelligence org → Meta, Microsoft AI → Microsoft, Gemini/DeepMind → Google DeepMind). Each month is a stated start month or, when unavailable, the announcement month. Rows shaded amber rest on a single reporting host; no single URL supports more than 4 of the 85 rows. Corridor totals come from a separate precomputed aggregate. Public reporting only — unreported moves are absent.