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Castbox is a podcast and spoken-audio platform focused on discovery, recommendations and in-audio search. Since launching in 2016, it has positioned itself as a global listening platform spanning podcasts, radio and audiobooks.
For a 2026 refresh, the clearest current Castbox statistics are that the company says it has 15 million+ users worldwide and a library of 50 million episodes. For a private platform like Castbox, those are much stronger lead metrics than the older employee and language counts in the draft.
Castbox Quick Answer
Castbox says it has grown to 15 million+ users worldwide and built a spoken-audio library of 50 million episodes. The company also announced a $13.5 million Series B in 2018.
Castbox Key Metrics
| Metric | Latest figure | Context |
|---|---|---|
| Users | 15 million+ | Current about page |
| Episodes in library | 50 million | Current about page |
| Series B funding | $13.5 million | 2018 |
| Total funding reported by TechCrunch | $29.5 million | 2018 |
About Castbox
Castbox focuses on spoken audio discovery, including podcasts, on-demand radio and audiobooks. Its brand identity is closely tied to search and recommendation technology, especially its in-audio search positioning.
Castbox User Statistics
Castbox says it has 15 million+ users worldwide. That remains the clearest official public adoption stat on the company’s current about page.
Castbox Library Statistics
Castbox says its audio library has grown to 50 million episodes. For a podcast platform, that is one of the best top-line scale indicators available.
Castbox Funding Statistics
Castbox announced a $13.5 million Series B round in 2018. TechCrunch reported that this brought total funding to $29.5 million.
Why older employee and language stats were trimmed
The old post leaned on 2018 counts for employees and supported languages. Those may still be historically interesting, but for a 2026 statistics page they are much less useful than current user and content-library scale.
FAQ
How many people use Castbox?
Castbox says it has more than 15 million users worldwide.
How many podcast episodes are on Castbox?
Castbox says its spoken-audio library includes 50 million episodes.
How much funding has Castbox raised?
Castbox announced a $13.5 million Series B in 2018, and TechCrunch reported total funding of $29.5 million at that time.
What is Castbox best known for?
Castbox is best known as a spoken-audio platform focused on podcast discovery and in-audio search.
Sources / References
