Castmagic vs Sonix

In short

• Both: Speech to text, Many languages, API, Mobile app

Castmagic

Castmagic turns audio and video into transcripts, summaries, clips, blogs, newsletters, and social content.

Plans

Hobby

• $ 19 per month, billed annually
• $239/yr
• $ 29 per month, billed monthly

• 30 hrs transcribed hours (library total)
• Up to 3 spaces
• 50GB storage
• 60+ supported languages
• Standard support

Starter

• $ 48 per month, billed annually
• $579/yr
• $ 69

• 100 hrs transcribed hours (library total)
• Up to 10 spaces
• 250GB storage
• 5 seats max team size
• Priority support

Team

• $ 139 per month, billed annually
• $1,669/yr
• $ 199

• 400 hrs transcribed hours (library total)
• Up to 25 spaces
• 1TB storage
• Unlimited max team size
• API access
• Priority support

Business & Scale

• From $699/mo
• From $999/mo

• Enterprise-level transcription, seats & storage
• Custom implementations & use cases
• For studios, platforms & publishing houses
• Volume discounts, SLA & dedicated support

Prices checked 2026-09-25 on the maker’s page.

Capabilities

• Speech to text — “Speaker-labelled, timestamped, 60+ languages, minutes after upload” source
• Many languages — “Publish-ready in minutes, in 60+ languages.” source
• API — “The v1 REST API imports recordings, pulls transcripts and fetches generated content, so Castmagic can power your tools, client dashboards and automations.” source
• Mobile app — “Record straight into a space from the iOS app, or leave a voice memo” source

Sonix

Sonix turns audio and video into searchable transcripts, subtitles, translations, and AI-generated insights.

Plans

Pay As You Go

• $10/hr

• Pay as you go transcription & translation
• AI workspace usage not available
• 5 GB storage
• Single-user account workspace
• Self-serve Help center & docs

Core

• $25/mo
• $275/yr

• 5 hrs/mo or 60 hrs/yr transcription & translation
• 5 hrs/mo or 60 hrs/yr AI workspace usage
• 25 GB storage
• 1 user included
• Email 48-hour response

Advanced

• $50/mo
• $550/yr

• 20 hrs/mo or 240 hrs/yr transcription & translation
• 25 hrs/mo or 300 hrs/yr AI workspace usage
• 50 GB storage
• 1 user included
• Email + chat 12-hour response

Pro

• $80/mo
• $880/yr

• 40 hrs/mo or 480 hrs/yr transcription & translation
• 100 hrs/mo or 1,200 hrs/yr AI workspace usage
• 100 GB storage
• 1 user included
• Priority email + chat 4-hour response

Enterprise

Price on request

• Everything in Pro, plus security, compliance, and dedicated support
• Custom pricing and custom terms
• 1 TB of storage per workspace
• Unlimited team members
• Custom transcription & AI workspace hours
• Dedicated account manager

Prices checked 2026-09-26 on the maker’s page.

Capabilities

• Speech to text — “Convert audio to text with 99% accuracy.” source
• Many languages — “Native-level transcription in 54+ languages.” source
• API — “RESTful API for automated transcription.” source
• Mobile app — “The mobile app that captures audio and delivers transcripts automatically.” source

Security

• SOC 2 Type II — “SOC 2 Type II certified with continuous security control monitoring.” source
• SOC 2 — “SOC 2 Type II certified with continuous security control monitoring.” source
• GDPR — “We follow GDPR protocols and can sign DPA and SCC.” source
• HIPAA — “Available through Medical Sonix for healthcare organizations.” source
• Not: Data kept in the EU — “All data is stored at AWS in the USA.” source
• Not trained on your data — “None of your data processed through Sonix is used for training purposes.” source