Think tank
The model is the small part. The operating system around it is the work.
A speech model is roughly a tenth of a production sales agent. Around it sit routing, telephony, QA, consent, and a loop that tunes voice, script, and timing against your own outcomes.
Indian-language telephony and low latency at concurrent volume each need a team most consumer brands do not have spare.
Hexta Engage keeps that loop running so model choice stays an ongoing setting, not a one-time bet.