Build vs buy AI agents: which is right for your business?
Building AI agents in-house gives maximum control but requires machine-learning, infrastructure, and ongoing maintenance. Buying a platform gets you to production faster on proven infrastructure. Most teams buy the infrastructure (channels, orchestration, and safety) and build their specific agents and workflows on top of it.
Building from scratch makes sense when agents are core intellectual property and you have a dedicated team to run them reliably over time. The hidden cost is everything around the model: integrations, queuing, testing, permissions, observability, and on-call when something breaks at 2 a.m.
Buying makes sense when you want results in weeks rather than quarters and would rather your team focus on the workflows unique to your business. The common middle path is a hybrid: adopt the infrastructure layer, then configure and train the agents yourself.
Tether Relay is the "buy the platform, build your AI employees on top" option, and we co-build the first AI employees with design partners.
See the platformLast updated June 2026
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Tether Relay is in private beta with design-partner intake open.