Auphonic vs Castos
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both Auphonic and Castos are credible ai audio tools, and the right pick comes down to your priorities.
Choose Auphonic if you want a lower starting price (free – $11/mo) and a free plan to start on. Automatic audio post-production.
Choose Castos if you'd rather have a longer free trial (14 days). WordPress-first podcast hosting.
Auphonic vs Castos: side by side
| Dimension | Auphonic | Castos |
|---|---|---|
| Starting price | Free – $11/moWinner | From $19/mo |
| Free plan | YesWinner | No |
| Free trial | — | 14 daysWinner |
| Pricing model | Freemium | Subscription |
| Best for | Podcasters, Audio Engineers | Podcasters, Wordpress Users |
| Platforms | Web, Api | Web, Api |
| Rating | 4.6/5 | 4.5/5 |
Auphonic key facts
- Vendor
- Auphonic
- Pricing
- Freemium — Free – $11/mo
- Free tier
- Yes
- Platforms
- Web, Api
- Best for
- Podcasters, Audio Engineers
- Editor rating
- 4.6 / 5
- Founded
- 2012
- Headquarters
- Graz, Austria
Castos key facts
- Vendor
- Castos
- Pricing
- Subscription — From $19/mo
- Free tier
- Free trial (14 days)
- Platforms
- Web, Api
- Best for
- Podcasters, Wordpress Users
- Editor rating
- 4.5 / 5
- Founded
- 2017
- Headquarters
- Detroit, Michigan
Frequently asked questions
Is Auphonic better than Castos?
Neither is universally better — Auphonic edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Auphonic or Castos cheaper?
Auphonic is the more affordable of the two to get started, at free – $11/mo. Auphonic starts at free – $11/mo; Castos starts at from $19/mo.
Can Auphonic replace Castos?
Yes for most teams — both are ai audio tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.