Guides and case studies
What we have learned building AI call scoring and private AI assistants, with real numbers and what we did not measure.
Is it cheaper to run AI call analysis on open-source models than on OpenAI?
What it costs us to transcribe and score more than 1,000 sales calls a day on open-source models (about 2.5¢ a call, from the real bill), how that compares with GPT-4o at list prices, and how to work out your own cost per call.
Read the guide → Case studyEvery sales call scored and coached, for about 2.5¢ each
How our AI Sales Coach scores about 1,000+ recorded sales calls a day for a US financial services company and sends daily coaching to about 60 reps, at an AI cost of about 2.5¢ a call.
Read the case study → Case studyAn AI tutor that stopped guessing
How an education company's AI tutor went from 6 wrong "I don't know" replies to 0 on a fixed test set, for under $5 a month in AI costs.
Read the case study → LogOur AI visibility log
Every two weeks we check whether AI search tools name Northstr, and publish the score.
Read the log →