Claude — Field Evidence
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Claude · Claude · adoption
Field note
Why the rise of open source AI isn’t hurting Anthropic … yet — Open source models’ success isn’t coming at the expense of frontier labs. Instead, they each seem to capture two phases of the same life cycle.
collected 2026-07-07original 2026-07-07
Does this shift the US–China race?
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Impact on the index
Open weights · minor
US +23Open +15
Directional contribution — before recency decay and per-type diminishing returns. How it works →
Related Front
US vs ChinaLikely
U.S. FrontiervsChina Open-Weight
Likely — capability gap narrowing on common tasks
Letters from the Front
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