Sierra Acquires Takeoff to Build Long-Horizon AI Agent Platform Horizon
July 24, 2026
Sierra is acquiring Takeoff, a startup building long-horizon AI agent runtime that enables agents to operate like humans while scaling like software. Financial terms were not disclosed, and the two companies plan to combine capabilities into a new platform called Horizon.
- Buyers
- Sierra
- Targets
- Takeoff
- Industry
- AI & Machine Learning
- Location
- California, United States
- Transaction Type
- Buyout
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