DeepSeek R1 was the moment open-weight models caught up to closed frontier models on reasoning benchmarks. For marketing teams, the consequence is simple: you can now run frontier-quality reasoning locally, privately, and without per-token billing anxiety.
What changes first
What hasn't changed
- Frontier closed models still win on brand-voice writing and on the stickiest reasoning tasks.
- Operating an open-weight model reliably still requires real engineering (inference servers, routing, monitoring).
- The 'we run this ourselves' answer only makes sense at serious scale.
Open-weight reasoning didn't kill closed frontier models. It gave serious teams a second toolbox — and the economics to actually use it.
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