Index podcast transcripts to surface books mentioned across episodes

Index podcast transcripts to surface books mentioned across episodes targets a $1.2B = 100,000 potential institutional customers (publishers, publicity firms, podcast networks, retailers, large author teams) × $12,000 ACV total addressable market with medium saturation and a year-over-year growth rate of 20% YoY (based on IAB/PwC reported podcast ad & audience growth and rising spend on podcast discovery tools).

Key trends driving demand: Podcast listenership and ad spend are growing — more audio content increases demand for search, discovery, and measurement of earned mentions.; AI transcription and LLM extraction are reaching practical accuracy for noisy consumer audio — this lowers the engineering cost to build structured mention pipelines.; Publishers seek measurable earned media channels — podcasts are increasingly treated as measurable publicity, creating demand for mention-level analytics.; Shift to API-first tooling and integrations — publishers want analytics that plug into their existing CRM/BI systems to inform campaigns and attribution..