What Make and Zapier do perfectly
When the trigger is clear (“new row in Sheets”, “deal closed in HubSpot”, “Stripe webhook”) and the action is clear (“create record in Airtable”, “post Slack message to channel X”, “append row in Notion”), Make and Zapier are the right answer. They have the official connectors, the retry model, the run history and the visual editor an ops team can maintain without filing a ticket with engineering.
- Scheduled or webhook-driven triggers against well-known SaaS.
- Predictable transforms between structured fields.
- Notifications, syncs and “glue” between tools with stable APIs.
- Processes whose logic fits a block diagram without fuzzy branches.
For all of that, building an AI agent is over-engineering. Make or Zapier ship in an afternoon, ops own it, and nobody has to justify tokens.
Where AI changes the rules
The shift happens when the input stops being a row and becomes a customer email, a supplier PDF, a scanned delivery note or a WhatsApp thread. Make can move the attachment to the right place; it can’t read it, understand the customer context and decide whether the reply is on policy or needs a human.
- Extracting order lines from PDFs that every customer sends in a different format.
- Classifying inbound email by intent and routing to the right team with a summary.
- Answering internal questions citing your SharePoint or Confluence docs.
- Detecting exceptions and escalating with context — not with “step 4 failed”.
Try this with if/else and you end up with a hundred branches nobody maintains. The agent reads, decides and leaves a trail — and when in doubt it escalates to a person instead of guessing.
When to combine them
In practice the answer is usually “both”. Make or Zapier stay as the transport — they listen to the webhook, move the file, write the result into the destination — and the AI agent does the cognitive bit in the middle: understanding the document, deciding the destination, drafting the reply. You keep the observability and the visual editor your team already knows, and the agent only lands where it adds judgment.
It’s also a good pattern for starting small: you reuse the automation you already have, add the agent as one more step and measure the delta before redesigning the whole flow.
The real cost at scale
Make and Zapier price per task or operation. They sit at reasonable numbers at moderate volumes; past a certain threshold, every step of every run adds up and the bill surprises. A custom AI agent has a more stable model cost and gets optimised per flow (caching, batching, smaller models where they suffice).
There’s another less visible cost: maintenance. When a flow grows twenty branches to cover cases the AI handles with judgment, the visual editor stops being an asset and becomes debt. The decision isn’t ideological — it’s looking at how many new exceptions show up each month and how much it costs to add them.