Grok AI Transcription for 3CX – Costs


Grok is the most cost-effective AI engine for 3CX and the recommended solution.

Support for Grok became available in 3CX V20 Update 9 along with a host of other features and improvements.

3CX provides a comprehensive instruction guide on how to setup an account with Grok and connect it to 3CX here.

Please note: the following data was captured using the Grok‑4.20 model, and pricing may vary across different models. At present, only Grok‑4.20 and Grok‑4.3 are available.

For those looking for some metrics to help them understand usage and cost associated with call transcription, we captured the following data and associated costs for 1 week of typical usage.

12 x Office Based Extensions

Roles include:

1 x Outbound Sales (Telephone usage = high)

2 x Inbound Sales (Telephone usage = high)

1 x Accounts (Telephone usage = low)

3 x Development (Telephone usage = low)

5 x Support (Telephone usage = high)

Total talk time = 33.5 hours

Time period = 1 week (Mon-Fri 8am-6pm)

Number of AI transcriptions = 490

Number of AI summaries = 450

GROK COST = $9.52 (£7.14 based on an exchange rate of 0.75)


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