Cost per contact: AI against a human agent

A human-handled contact costs roughly $6–13.50 depending on how it’s calculated; AI costs roughly $0.10–1.50. In the McKinsey sample the difference is $7.40 against $0.62 — more than tenfold at the level of a single contact.

Key figures

• AI $0.62 against a human agent $7.40 per resolution McKinsey — AI in Customer Service, 2026
• Chat AI $0.41, voice AI $1.18 per resolution McKinsey — AI in Customer Service, 2026
• Human contact under other benchmarks — around $13.50 Forrester / SQM, 2026
• Average return — around $3.50 per dollar invested Industry estimates, 2026

What does a human agent actually cost?

It depends what you count. Forrester and SQM benchmarks give around $13.50 per contact Forrester / SQM, 2026 , the McKinsey sample $7.40 per resolution McKinsey — AI in Customer Service, 2026 , other datasets roughly $6–8.

The twofold spread comes from cost composition. Higher estimates include the fully loaded cost of a seat: salary, payroll tax, software licences, training and the cost of replacing someone who leaves. Lower ones count closer to the direct hourly cost.

What does an AI-handled contact cost?

Roughly $0.10 to $1.50 per resolved ticket Industry estimates, 2026 depending on vendor and pricing model. The McKinsey sample averages $0.62, with chat cheaper at $0.41 and voice AI more expensive at $1.18 McKinsey — AI in Customer Service, 2026 .

The gap between chat and voice is more than twofold and has a technical explanation: voice handling requires speech recognition and synthesis on top of the model itself.

Why doesn’t an order-of-magnitude gap mean an order-of-magnitude saving?

Because per-contact cost isn’t the whole cost. On top sit platform licences, configuration, knowledge-base work and maintenance. And crucially, AI doesn’t handle every contact.

The practical calculation looks like this: saving = (share of contacts AI closes) × (cost difference) − (platform cost). The first variable is the decisive one, and it’s most often lower than expected.

What’s the return on investment?

Published estimates give around $3.50 per dollar invested Industry estimates, 2026 , up to eightfold among leaders.

Read those with the source in mind: a substantial share of such estimates comes from vendor and consulting publications — parties with an interest in a high result. The direction is plausible; the specific multiples are not.

Where do these figures come from?

This report aggregates published 2026 cost-to-serve benchmarks. Estimates differ in cost composition — fully loaded seat cost versus direct salary — so ranges are given rather than single values. Some sources are vendor or consulting publications and may carry an upward bias in reported returns; this is noted in the text.