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Build or buy an AI agent?

Buy when the task is the same everywhere and a tool already does it well. Build when it depends on the systems, the rules or what sets the company apart. In between, the most common answer is to combine: market tools for the standard, custom work for the core of the business.

Four questions to decide

  1. Is the task the same in every company? Taking meeting notes, proofreading, transcribing a call: yes. Matching invoices against internal tolerances, answering according to in-house policies: no.
  2. Where is the data? If the agent must read and write in the ERP, the CRM and the business tools, integration will be most of the work, and a generic tool will plug in poorly.
  3. Which rules must it follow? Approval thresholds, exceptions, access rights: the more precise the rules, the more a standard tool forces workarounds.
  4. Is it a competitive advantage? What sets the company apart from its competitors deserves to be built and to belong to it. The rest can be bought.

In short

BuyBuild
Getting startedFastA few weeks for a first case
Fit with internal rulesLimited to the settings providedComplete
Integration with the systemsThe vendor’s connectorsWhatever is needed
DataWith the vendor, under its contractWhere the company decides
OwnershipA licenseThe code belongs to the company
CostPer-user or usage-based subscriptionBuild, then operations

The traps

  • Building what already exists. If a tool does the task well, custom work will cost more for a comparable result.
  • Buying for a unique process. A generic tool on a process specific to the company often ends up worked around by the teams.
  • Forgetting the run. Bought or built, an agent must be looked after: quality, costs, changes. Who does it must be planned.

Extra’s position

The diagnostic says when a market tool is enough. Only what needs building is built, then connected to the tools that stay.

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