Deutsche Telekom wires in Decagon's agents and pre-builds the exit

The menu is gone, the agent answers

In parts of Deutsche Telekom's ten European markets the touch-tone tree is already gone: an AI agent now answers around the clock, in 40 to 60 languages, with no hold time ¹². The named supplier is Decagon, the San Francisco startup whose agents handle chat, email, voice and SMS, valued at $4.5 billion after a $250 million January Series D led by Coatue and Index ¹³.

The escape hatch ships with the contract

Chief AI officer Kartik Sheth wants the automation without the lock-in. Telekom builds the tooling layer and its own evals over the vendor, and exposes an MCP layer rather than raw APIs, "so it can switch if the technology changes" ². The Hungarian trade write-up of his talk↗ names the pairing and its consequence in one line: the group's own tooling and evaluation system makes a future vendor switch easier ¹. The buyer is building the exit door while the vendor is still moving in.

Forty percent is the wall

A newly switched-on agent handles a fifth of calls, a quarter within a week, and reaches 40% inside two months, while group-wide deflection climbs one to two points a month ¹²⁴. Past 40% it stalls: the remaining calls combine several problems and need an experienced human ². The group still targets more than 80% of calls within two years, a span Sheth grades really, really hard ²⁴.

Telekom's homegrown benchmark is the warning: Vanda has answered Magyar Telekom customers since 2018, and the company will not say whether it has a future ¹.

Eighty percent on its own models

Decagon is fighting the same cost war from the vendor side: it already routes 80% of customer queries through models of its own, a figure carried in 21 September reporting on a Bloomberg account↗ of startups fleeing rented models, with Ramp and Rogo weighing the same move ⁵⁶⁷. The parallel is Harvey, gross margin down from about half to minus half by June on rented models, positive again after an August rebuild on China's open Kimi K3 ⁵⁷.

Owning the engine cuts Decagon's token bill. It also, perversely, lowers what a customer gives up by leaving, which is exactly the door Telekom is fitting.

Bernstein won't wait for October

Fairness first: Telekom invests in its AI partners, and Sheth expects the agent share to keep rising for a year or two as models improve and more back-end endpoints open ². Bernstein is less patient, cutting the carrier to Market-Perform on 25 September↗ with a €28.10 target, down from €37 ⁴. The next reading is scheduled: an AI investor day on 5 October, then third-quarter figures on 5 November↗ ⁸. Watch one number there, whether any live market's deflection has got past 40%.